./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:48:09,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:48:09,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:48:09,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:48:09,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:48:09,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:48:09,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:48:09,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:48:09,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:48:09,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:48:09,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:48:09,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:48:09,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:48:09,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:48:09,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:48:09,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:48:09,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:48:09,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:48:09,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:48:09,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:48:09,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:48:09,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:48:09,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:48:09,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:48:09,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:48:09,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:48:09,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:48:09,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:48:09,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:48:09,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:48:09,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:48:09,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:48:09,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:48:09,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:48:09,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:48:09,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:48:09,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:48:09,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:48:09,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:48:09,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:48:09,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:48:09,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:48:09,501 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:48:09,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:48:09,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:48:09,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:48:09,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:48:09,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:48:09,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:48:09,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:48:09,504 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:48:09,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:48:09,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:48:09,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:48:09,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:48:09,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:48:09,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:48:09,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:09,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:48:09,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:48:09,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:48:09,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:48:09,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:48:09,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:48:09,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:48:09,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:48:09,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2021-12-28 03:48:09,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:48:09,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:48:09,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:48:09,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:48:09,780 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:48:09,781 INFO L432 ainManager$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--gpu--drm--ast--ast.ko-main.cil.out.i [2021-12-28 03:48:09,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01029ced8/c7e0511c175346f1a68e144e3936cbf2/FLAG2126abc85 [2021-12-28 03:48:10,526 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:48:10,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-12-28 03:48:10,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01029ced8/c7e0511c175346f1a68e144e3936cbf2/FLAG2126abc85 [2021-12-28 03:48:10,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01029ced8/c7e0511c175346f1a68e144e3936cbf2 [2021-12-28 03:48:10,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:48:10,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:48:10,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:10,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:48:10,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:48:10,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:10" (1/1) ... [2021-12-28 03:48:10,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfdfe7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:10, skipping insertion in model container [2021-12-28 03:48:10,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:48:10" (1/1) ... [2021-12-28 03:48:10,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:48:11,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:48:13,240 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--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2021-12-28 03:48:13,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:13,468 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:48:13,843 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--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2021-12-28 03:48:13,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:48:14,207 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:48:14,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14 WrapperNode [2021-12-28 03:48:14,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:48:14,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:14,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:48:14,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:48:14,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,542 INFO L137 Inliner]: procedures = 511, calls = 3849, calls flagged for inlining = 265, calls inlined = 264, statements flattened = 9561 [2021-12-28 03:48:14,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:48:14,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:48:14,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:48:14,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:48:14,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:48:14,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:48:14,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:48:14,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:48:14,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (1/1) ... [2021-12-28 03:48:14,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:48:14,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:48:15,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:48:15,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:48:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2021-12-28 03:48:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2021-12-28 03:48:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:48:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:48:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2021-12-28 03:48:15,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2021-12-28 03:48:15,078 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2021-12-28 03:48:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2021-12-28 03:48:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2021-12-28 03:48:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2021-12-28 03:48:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2021-12-28 03:48:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2021-12-28 03:48:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2021-12-28 03:48:15,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2021-12-28 03:48:15,079 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2021-12-28 03:48:15,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2021-12-28 03:48:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-28 03:48:15,080 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-28 03:48:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2021-12-28 03:48:15,080 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2021-12-28 03:48:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2021-12-28 03:48:15,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2021-12-28 03:48:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:48:15,080 INFO L130 BoogieDeclarations]: Found specification of procedure moutdwm [2021-12-28 03:48:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure moutdwm [2021-12-28 03:48:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2021-12-28 03:48:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2021-12-28 03:48:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2021-12-28 03:48:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2021-12-28 03:48:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2021-12-28 03:48:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2021-12-28 03:48:15,081 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2021-12-28 03:48:15,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2021-12-28 03:48:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2021-12-28 03:48:15,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2021-12-28 03:48:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2021-12-28 03:48:15,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2021-12-28 03:48:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:48:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2021-12-28 03:48:15,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2021-12-28 03:48:15,082 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2021-12-28 03:48:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2021-12-28 03:48:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:48:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2021-12-28 03:48:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2021-12-28 03:48:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2021-12-28 03:48:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2021-12-28 03:48:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:48:15,083 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2021-12-28 03:48:15,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2021-12-28 03:48:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-12-28 03:48:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-12-28 03:48:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure mindwm [2021-12-28 03:48:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure mindwm [2021-12-28 03:48:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2021-12-28 03:48:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2021-12-28 03:48:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:48:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:48:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_create_handle [2021-12-28 03:48:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_create_handle [2021-12-28 03:48:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:48:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:48:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2021-12-28 03:48:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2021-12-28 03:48:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 03:48:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 03:48:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2021-12-28 03:48:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2021-12-28 03:48:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:48:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:48:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:48:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2021-12-28 03:48:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2021-12-28 03:48:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2021-12-28 03:48:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2021-12-28 03:48:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2021-12-28 03:48:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2021-12-28 03:48:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2021-12-28 03:48:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2021-12-28 03:48:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2021-12-28 03:48:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2021-12-28 03:48:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2021-12-28 03:48:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2021-12-28 03:48:15,087 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-28 03:48:15,087 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-28 03:48:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:48:15,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:48:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-28 03:48:15,088 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-28 03:48:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:48:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:48:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2021-12-28 03:48:15,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2021-12-28 03:48:15,088 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2021-12-28 03:48:15,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2021-12-28 03:48:15,089 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2021-12-28 03:48:15,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2021-12-28 03:48:15,104 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2021-12-28 03:48:15,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2021-12-28 03:48:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2021-12-28 03:48:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2021-12-28 03:48:15,105 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:48:15,105 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:48:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:48:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:48:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2021-12-28 03:48:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2021-12-28 03:48:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2021-12-28 03:48:15,106 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2021-12-28 03:48:15,106 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2021-12-28 03:48:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2021-12-28 03:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:48:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-28 03:48:15,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-28 03:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:48:15,107 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2021-12-28 03:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-12-28 03:48:15,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2021-12-28 03:48:15,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2021-12-28 03:48:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:48:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2021-12-28 03:48:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2021-12-28 03:48:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2021-12-28 03:48:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2021-12-28 03:48:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:48:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2021-12-28 03:48:15,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2021-12-28 03:48:15,113 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 03:48:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 03:48:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2021-12-28 03:48:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2021-12-28 03:48:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2021-12-28 03:48:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2021-12-28 03:48:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2021-12-28 03:48:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2021-12-28 03:48:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2021-12-28 03:48:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2021-12-28 03:48:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2021-12-28 03:48:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2021-12-28 03:48:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2021-12-28 03:48:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2021-12-28 03:48:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2021-12-28 03:48:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2021-12-28 03:48:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2021-12-28 03:48:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2021-12-28 03:48:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2021-12-28 03:48:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2021-12-28 03:48:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2021-12-28 03:48:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2021-12-28 03:48:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2021-12-28 03:48:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2021-12-28 03:48:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2021-12-28 03:48:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2021-12-28 03:48:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2021-12-28 03:48:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2021-12-28 03:48:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:48:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:48:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:48:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2021-12-28 03:48:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2021-12-28 03:48:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2021-12-28 03:48:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2021-12-28 03:48:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:48:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:48:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fasync [2021-12-28 03:48:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fasync [2021-12-28 03:48:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2021-12-28 03:48:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2021-12-28 03:48:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2021-12-28 03:48:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2021-12-28 03:48:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2021-12-28 03:48:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2021-12-28 03:48:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2021-12-28 03:48:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2021-12-28 03:48:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2021-12-28 03:48:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2021-12-28 03:48:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2021-12-28 03:48:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2021-12-28 03:48:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2021-12-28 03:48:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2021-12-28 03:48:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2021-12-28 03:48:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2021-12-28 03:48:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_scan2 [2021-12-28 03:48:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_scan2 [2021-12-28 03:48:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-28 03:48:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-28 03:48:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2021-12-28 03:48:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2021-12-28 03:48:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2021-12-28 03:48:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2021-12-28 03:48:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2021-12-28 03:48:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2021-12-28 03:48:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:48:15,922 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:48:15,924 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:48:25,826 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel#1: main_#t~ret94#1 := ast_gem_init_object_#res#1;assume { :end_inline_ast_gem_init_object } true;assume -2147483648 <= main_#t~ret94#1 && main_#t~ret94#1 <= 2147483647;havoc main_#t~ret94#1;~ldv_state_variable_13~0 := 1; [2021-12-28 03:48:25,872 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:48:25,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:48:25,892 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 03:48:25,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:25 BoogieIcfgContainer [2021-12-28 03:48:25,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:48:25,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:48:25,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:48:25,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:48:25,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:48:10" (1/3) ... [2021-12-28 03:48:25,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fe226d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:25, skipping insertion in model container [2021-12-28 03:48:25,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:48:14" (2/3) ... [2021-12-28 03:48:25,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fe226d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:48:25, skipping insertion in model container [2021-12-28 03:48:25,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:48:25" (3/3) ... [2021-12-28 03:48:25,900 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-12-28 03:48:25,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:48:25,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:48:25,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:48:25,953 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:48:25,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:48:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 2566 states, 1829 states have (on average 1.437944231820667) internal successors, (2630), 1887 states have internal predecessors, (2630), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) [2021-12-28 03:48:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:48:26,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:26,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:48:26,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:26,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash 337264067, now seen corresponding path program 1 times [2021-12-28 03:48:26,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:26,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390256419] [2021-12-28 03:48:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:26,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:26,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:26,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390256419] [2021-12-28 03:48:26,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390256419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:26,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:26,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:26,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847849578] [2021-12-28 03:48:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:26,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:26,439 INFO L87 Difference]: Start difference. First operand has 2566 states, 1829 states have (on average 1.437944231820667) internal successors, (2630), 1887 states have internal predecessors, (2630), 647 states have call successors, (647), 88 states have call predecessors, (647), 88 states have return successors, (647), 627 states have call predecessors, (647), 647 states have call successors, (647) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:26,794 INFO L93 Difference]: Finished difference Result 7661 states and 11847 transitions. [2021-12-28 03:48:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-28 03:48:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:26,841 INFO L225 Difference]: With dead ends: 7661 [2021-12-28 03:48:26,843 INFO L226 Difference]: Without dead ends: 5092 [2021-12-28 03:48:26,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:26,868 INFO L933 BasicCegarLoop]: 4561 mSDtfsCounter, 3866 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3866 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:26,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3866 Valid, 8451 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2021-12-28 03:48:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 5086. [2021-12-28 03:48:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3628 states have (on average 1.4355016538037486) internal successors, (5208), 3730 states have internal predecessors, (5208), 1283 states have call successors, (1283), 175 states have call predecessors, (1283), 174 states have return successors, (1272), 1232 states have call predecessors, (1272), 1272 states have call successors, (1272) [2021-12-28 03:48:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 7763 transitions. [2021-12-28 03:48:27,265 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 7763 transitions. Word has length 18 [2021-12-28 03:48:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:27,266 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 7763 transitions. [2021-12-28 03:48:27,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 7763 transitions. [2021-12-28 03:48:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:48:27,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:27,274 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] [2021-12-28 03:48:27,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:48:27,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:27,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash -427214803, now seen corresponding path program 1 times [2021-12-28 03:48:27,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:27,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094393698] [2021-12-28 03:48:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:27,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:27,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094393698] [2021-12-28 03:48:27,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094393698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:27,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:27,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:27,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334319975] [2021-12-28 03:48:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:27,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:27,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:27,482 INFO L87 Difference]: Start difference. First operand 5086 states and 7763 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:27,764 INFO L93 Difference]: Finished difference Result 14683 states and 22435 transitions. [2021-12-28 03:48:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-28 03:48:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:27,815 INFO L225 Difference]: With dead ends: 14683 [2021-12-28 03:48:27,816 INFO L226 Difference]: Without dead ends: 9600 [2021-12-28 03:48:27,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:27,842 INFO L933 BasicCegarLoop]: 4696 mSDtfsCounter, 3468 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:27,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3468 Valid, 8574 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:27,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2021-12-28 03:48:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 9577. [2021-12-28 03:48:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9577 states, 6793 states have (on average 1.4382452524657736) internal successors, (9770), 6985 states have internal predecessors, (9770), 2443 states have call successors, (2443), 341 states have call predecessors, (2443), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-28 03:48:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 14645 transitions. [2021-12-28 03:48:28,413 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 14645 transitions. Word has length 23 [2021-12-28 03:48:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:28,413 INFO L470 AbstractCegarLoop]: Abstraction has 9577 states and 14645 transitions. [2021-12-28 03:48:28,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 14645 transitions. [2021-12-28 03:48:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 03:48:28,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:28,415 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] [2021-12-28 03:48:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:48:28,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash -541647884, now seen corresponding path program 1 times [2021-12-28 03:48:28,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094275110] [2021-12-28 03:48:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:28,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:28,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:28,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094275110] [2021-12-28 03:48:28,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094275110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:28,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:28,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:48:28,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019013895] [2021-12-28 03:48:28,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:28,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:48:28,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:28,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:48:28,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:48:28,584 INFO L87 Difference]: Start difference. First operand 9577 states and 14645 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:28,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:28,925 INFO L93 Difference]: Finished difference Result 19174 states and 29319 transitions. [2021-12-28 03:48:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:48:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-28 03:48:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:28,977 INFO L225 Difference]: With dead ends: 19174 [2021-12-28 03:48:28,977 INFO L226 Difference]: Without dead ends: 9600 [2021-12-28 03:48:29,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:29,026 INFO L933 BasicCegarLoop]: 3900 mSDtfsCounter, 34 mSDsluCounter, 7795 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 11695 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:29,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 11695 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2021-12-28 03:48:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 9580. [2021-12-28 03:48:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 6796 states have (on average 1.4380517951736316) internal successors, (9773), 6988 states have internal predecessors, (9773), 2443 states have call successors, (2443), 341 states have call predecessors, (2443), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-28 03:48:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 14648 transitions. [2021-12-28 03:48:29,548 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 14648 transitions. Word has length 22 [2021-12-28 03:48:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:29,548 INFO L470 AbstractCegarLoop]: Abstraction has 9580 states and 14648 transitions. [2021-12-28 03:48:29,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 14648 transitions. [2021-12-28 03:48:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 03:48:29,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:29,550 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] [2021-12-28 03:48:29,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:48:29,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -484389582, now seen corresponding path program 1 times [2021-12-28 03:48:29,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852133394] [2021-12-28 03:48:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:29,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:29,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852133394] [2021-12-28 03:48:29,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852133394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:29,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:29,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:29,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008345763] [2021-12-28 03:48:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:29,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:29,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:29,811 INFO L87 Difference]: Start difference. First operand 9580 states and 14648 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:30,061 INFO L93 Difference]: Finished difference Result 9582 states and 14649 transitions. [2021-12-28 03:48:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-28 03:48:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:30,098 INFO L225 Difference]: With dead ends: 9582 [2021-12-28 03:48:30,099 INFO L226 Difference]: Without dead ends: 9579 [2021-12-28 03:48:30,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:30,105 INFO L933 BasicCegarLoop]: 3900 mSDtfsCounter, 3882 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3882 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:30,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3882 Valid, 3900 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9579 states. [2021-12-28 03:48:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9579 to 9579. [2021-12-28 03:48:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 6796 states have (on average 1.4379046497939965) internal successors, (9772), 6987 states have internal predecessors, (9772), 2442 states have call successors, (2442), 341 states have call predecessors, (2442), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-28 03:48:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 14646 transitions. [2021-12-28 03:48:30,459 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 14646 transitions. Word has length 22 [2021-12-28 03:48:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:30,460 INFO L470 AbstractCegarLoop]: Abstraction has 9579 states and 14646 transitions. [2021-12-28 03:48:30,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 14646 transitions. [2021-12-28 03:48:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 03:48:30,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:30,462 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] [2021-12-28 03:48:30,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:48:30,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2132288794, now seen corresponding path program 1 times [2021-12-28 03:48:30,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:30,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586026627] [2021-12-28 03:48:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:30,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:30,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586026627] [2021-12-28 03:48:30,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586026627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:30,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:30,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:30,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694194540] [2021-12-28 03:48:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:30,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:30,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:30,660 INFO L87 Difference]: Start difference. First operand 9579 states and 14646 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:30,827 INFO L93 Difference]: Finished difference Result 9581 states and 14647 transitions. [2021-12-28 03:48:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:30,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-28 03:48:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:30,863 INFO L225 Difference]: With dead ends: 9581 [2021-12-28 03:48:30,863 INFO L226 Difference]: Without dead ends: 9578 [2021-12-28 03:48:30,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:30,872 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3879 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:30,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3879 Valid, 3898 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:30,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2021-12-28 03:48:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9578. [2021-12-28 03:48:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9578 states, 6796 states have (on average 1.4377575044143613) internal successors, (9771), 6986 states have internal predecessors, (9771), 2441 states have call successors, (2441), 341 states have call predecessors, (2441), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-28 03:48:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 14644 transitions. [2021-12-28 03:48:31,347 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 14644 transitions. Word has length 23 [2021-12-28 03:48:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:31,348 INFO L470 AbstractCegarLoop]: Abstraction has 9578 states and 14644 transitions. [2021-12-28 03:48:31,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 14644 transitions. [2021-12-28 03:48:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-28 03:48:31,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:31,351 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] [2021-12-28 03:48:31,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:48:31,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1677551947, now seen corresponding path program 1 times [2021-12-28 03:48:31,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:31,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311811596] [2021-12-28 03:48:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:31,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:31,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:31,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311811596] [2021-12-28 03:48:31,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311811596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:31,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:31,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:31,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121816109] [2021-12-28 03:48:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:31,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:31,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:31,521 INFO L87 Difference]: Start difference. First operand 9578 states and 14644 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:31,698 INFO L93 Difference]: Finished difference Result 9580 states and 14645 transitions. [2021-12-28 03:48:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:31,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-28 03:48:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:31,734 INFO L225 Difference]: With dead ends: 9580 [2021-12-28 03:48:31,735 INFO L226 Difference]: Without dead ends: 9577 [2021-12-28 03:48:31,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:31,744 INFO L933 BasicCegarLoop]: 3896 mSDtfsCounter, 3876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:31,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3876 Valid, 3896 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2021-12-28 03:48:32,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 9577. [2021-12-28 03:48:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9577 states, 6796 states have (on average 1.4376103590347262) internal successors, (9770), 6985 states have internal predecessors, (9770), 2440 states have call successors, (2440), 341 states have call predecessors, (2440), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-28 03:48:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 14642 transitions. [2021-12-28 03:48:32,153 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 14642 transitions. Word has length 24 [2021-12-28 03:48:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:32,153 INFO L470 AbstractCegarLoop]: Abstraction has 9577 states and 14642 transitions. [2021-12-28 03:48:32,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 14642 transitions. [2021-12-28 03:48:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 03:48:32,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:32,155 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] [2021-12-28 03:48:32,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:48:32,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash -465606711, now seen corresponding path program 1 times [2021-12-28 03:48:32,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:32,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562791226] [2021-12-28 03:48:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:32,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:32,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562791226] [2021-12-28 03:48:32,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562791226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:32,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:32,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:32,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428482933] [2021-12-28 03:48:32,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:32,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:32,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:32,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:32,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:32,313 INFO L87 Difference]: Start difference. First operand 9577 states and 14642 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:32,496 INFO L93 Difference]: Finished difference Result 9579 states and 14643 transitions. [2021-12-28 03:48:32,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-28 03:48:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:32,530 INFO L225 Difference]: With dead ends: 9579 [2021-12-28 03:48:32,530 INFO L226 Difference]: Without dead ends: 9576 [2021-12-28 03:48:32,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:32,538 INFO L933 BasicCegarLoop]: 3894 mSDtfsCounter, 3873 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3873 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:32,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3873 Valid, 3894 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:32,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2021-12-28 03:48:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 9576. [2021-12-28 03:48:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9576 states, 6796 states have (on average 1.4374632136550913) internal successors, (9769), 6984 states have internal predecessors, (9769), 2439 states have call successors, (2439), 341 states have call predecessors, (2439), 340 states have return successors, (2432), 2352 states have call predecessors, (2432), 2432 states have call successors, (2432) [2021-12-28 03:48:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 14640 transitions. [2021-12-28 03:48:33,028 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 14640 transitions. Word has length 25 [2021-12-28 03:48:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:33,029 INFO L470 AbstractCegarLoop]: Abstraction has 9576 states and 14640 transitions. [2021-12-28 03:48:33,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 14640 transitions. [2021-12-28 03:48:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-28 03:48:33,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:33,033 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] [2021-12-28 03:48:33,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:48:33,033 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:33,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1488446885, now seen corresponding path program 1 times [2021-12-28 03:48:33,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:33,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609639528] [2021-12-28 03:48:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:33,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:33,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609639528] [2021-12-28 03:48:33,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609639528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:33,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:33,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:33,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100404071] [2021-12-28 03:48:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:33,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:33,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:33,206 INFO L87 Difference]: Start difference. First operand 9576 states and 14640 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:33,700 INFO L93 Difference]: Finished difference Result 28641 states and 43792 transitions. [2021-12-28 03:48:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:33,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-28 03:48:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:33,778 INFO L225 Difference]: With dead ends: 28641 [2021-12-28 03:48:33,778 INFO L226 Difference]: Without dead ends: 19068 [2021-12-28 03:48:33,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:33,823 INFO L933 BasicCegarLoop]: 5186 mSDtfsCounter, 3849 mSDsluCounter, 3877 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3849 SdHoareTripleChecker+Valid, 9063 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:33,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3849 Valid, 9063 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19068 states. [2021-12-28 03:48:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19068 to 19046. [2021-12-28 03:48:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19046 states, 13510 states have (on average 1.4372316802368617) internal successors, (19417), 13880 states have internal predecessors, (19417), 4859 states have call successors, (4859), 677 states have call predecessors, (4859), 676 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2021-12-28 03:48:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19046 states to 19046 states and 29128 transitions. [2021-12-28 03:48:34,727 INFO L78 Accepts]: Start accepts. Automaton has 19046 states and 29128 transitions. Word has length 29 [2021-12-28 03:48:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:34,728 INFO L470 AbstractCegarLoop]: Abstraction has 19046 states and 29128 transitions. [2021-12-28 03:48:34,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 19046 states and 29128 transitions. [2021-12-28 03:48:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 03:48:34,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:34,730 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] [2021-12-28 03:48:34,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:48:34,730 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1550005192, now seen corresponding path program 1 times [2021-12-28 03:48:34,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394381938] [2021-12-28 03:48:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:34,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:34,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:34,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394381938] [2021-12-28 03:48:34,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394381938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:34,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:34,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:34,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841589055] [2021-12-28 03:48:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:34,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:34,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:34,895 INFO L87 Difference]: Start difference. First operand 19046 states and 29128 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:35,206 INFO L93 Difference]: Finished difference Result 19074 states and 29146 transitions. [2021-12-28 03:48:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-28 03:48:35,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:35,283 INFO L225 Difference]: With dead ends: 19074 [2021-12-28 03:48:35,283 INFO L226 Difference]: Without dead ends: 19070 [2021-12-28 03:48:35,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:35,300 INFO L933 BasicCegarLoop]: 3889 mSDtfsCounter, 3858 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3858 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:35,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3858 Valid, 3898 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:35,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19070 states. [2021-12-28 03:48:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19070 to 19068. [2021-12-28 03:48:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19068 states, 13526 states have (on average 1.4360490906402483) internal successors, (19424), 13894 states have internal predecessors, (19424), 4857 states have call successors, (4857), 685 states have call predecessors, (4857), 684 states have return successors, (4852), 4692 states have call predecessors, (4852), 4852 states have call successors, (4852) [2021-12-28 03:48:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19068 states to 19068 states and 29133 transitions. [2021-12-28 03:48:36,129 INFO L78 Accepts]: Start accepts. Automaton has 19068 states and 29133 transitions. Word has length 26 [2021-12-28 03:48:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:36,130 INFO L470 AbstractCegarLoop]: Abstraction has 19068 states and 29133 transitions. [2021-12-28 03:48:36,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 19068 states and 29133 transitions. [2021-12-28 03:48:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 03:48:36,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:36,132 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] [2021-12-28 03:48:36,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:48:36,133 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash -806614868, now seen corresponding path program 1 times [2021-12-28 03:48:36,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:36,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617525122] [2021-12-28 03:48:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:36,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:36,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:36,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617525122] [2021-12-28 03:48:36,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617525122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:36,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:36,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:36,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476978227] [2021-12-28 03:48:36,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:36,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:36,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:36,278 INFO L87 Difference]: Start difference. First operand 19068 states and 29133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:36,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:36,942 INFO L93 Difference]: Finished difference Result 39355 states and 59716 transitions. [2021-12-28 03:48:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:36,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-28 03:48:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:37,031 INFO L225 Difference]: With dead ends: 39355 [2021-12-28 03:48:37,032 INFO L226 Difference]: Without dead ends: 20290 [2021-12-28 03:48:37,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:37,101 INFO L933 BasicCegarLoop]: 3957 mSDtfsCounter, 3744 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:37,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 4252 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20290 states. [2021-12-28 03:48:37,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20290 to 20227. [2021-12-28 03:48:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20227 states, 14274 states have (on average 1.417051982625753) internal successors, (20227), 14648 states have internal predecessors, (20227), 5044 states have call successors, (5044), 890 states have call predecessors, (5044), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2021-12-28 03:48:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20227 states to 20227 states and 30363 transitions. [2021-12-28 03:48:37,970 INFO L78 Accepts]: Start accepts. Automaton has 20227 states and 30363 transitions. Word has length 27 [2021-12-28 03:48:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:37,971 INFO L470 AbstractCegarLoop]: Abstraction has 20227 states and 30363 transitions. [2021-12-28 03:48:37,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 20227 states and 30363 transitions. [2021-12-28 03:48:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 03:48:37,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:37,973 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] [2021-12-28 03:48:37,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:48:37,974 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash 763653563, now seen corresponding path program 1 times [2021-12-28 03:48:37,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364462386] [2021-12-28 03:48:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:37,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:48:38,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:38,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364462386] [2021-12-28 03:48:38,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364462386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:38,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:38,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:48:38,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12884165] [2021-12-28 03:48:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:38,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:48:38,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:48:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:38,138 INFO L87 Difference]: Start difference. First operand 20227 states and 30363 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:38,585 INFO L93 Difference]: Finished difference Result 20229 states and 30364 transitions. [2021-12-28 03:48:38,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:48:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-28 03:48:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:38,862 INFO L225 Difference]: With dead ends: 20229 [2021-12-28 03:48:38,862 INFO L226 Difference]: Without dead ends: 20213 [2021-12-28 03:48:38,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:48:38,870 INFO L933 BasicCegarLoop]: 3887 mSDtfsCounter, 3862 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3862 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:38,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3862 Valid, 3887 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:48:38,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20213 states. [2021-12-28 03:48:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20213 to 20213. [2021-12-28 03:48:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20213 states, 14261 states have (on average 1.4162400953649814) internal successors, (20197), 14634 states have internal predecessors, (20197), 5043 states have call successors, (5043), 890 states have call predecessors, (5043), 908 states have return successors, (5092), 4900 states have call predecessors, (5092), 5036 states have call successors, (5092) [2021-12-28 03:48:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20213 states to 20213 states and 30332 transitions. [2021-12-28 03:48:39,650 INFO L78 Accepts]: Start accepts. Automaton has 20213 states and 30332 transitions. Word has length 28 [2021-12-28 03:48:39,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:39,650 INFO L470 AbstractCegarLoop]: Abstraction has 20213 states and 30332 transitions. [2021-12-28 03:48:39,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:48:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 20213 states and 30332 transitions. [2021-12-28 03:48:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 03:48:39,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:39,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:48:39,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:48:39,664 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 929900714, now seen corresponding path program 1 times [2021-12-28 03:48:39,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:39,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260838189] [2021-12-28 03:48:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:39,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:48:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-28 03:48:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-28 03:48:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 03:48:39,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:39,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260838189] [2021-12-28 03:48:39,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260838189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:39,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:39,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:48:39,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246042361] [2021-12-28 03:48:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:39,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:48:39,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:48:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:39,930 INFO L87 Difference]: Start difference. First operand 20213 states and 30332 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 03:48:42,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:48:55,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:48:55,418 INFO L93 Difference]: Finished difference Result 22672 states and 33503 transitions. [2021-12-28 03:48:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:48:55,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2021-12-28 03:48:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:48:55,494 INFO L225 Difference]: With dead ends: 22672 [2021-12-28 03:48:55,495 INFO L226 Difference]: Without dead ends: 20736 [2021-12-28 03:48:55,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:48:55,513 INFO L933 BasicCegarLoop]: 3481 mSDtfsCounter, 2076 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 4777 mSolverCounterSat, 1673 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 7190 SdHoareTripleChecker+Invalid, 6451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1673 IncrementalHoareTripleChecker+Valid, 4777 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:48:55,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2465 Valid, 7190 Invalid, 6451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1673 Valid, 4777 Invalid, 1 Unknown, 0 Unchecked, 14.9s Time] [2021-12-28 03:48:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20736 states. [2021-12-28 03:48:56,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20736 to 20089. [2021-12-28 03:48:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20089 states, 14187 states have (on average 1.417283428490872) internal successors, (20107), 14560 states have internal predecessors, (20107), 5023 states have call successors, (5023), 880 states have call predecessors, (5023), 878 states have return successors, (5020), 4860 states have call predecessors, (5020), 5020 states have call successors, (5020) [2021-12-28 03:48:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20089 states to 20089 states and 30150 transitions. [2021-12-28 03:48:56,612 INFO L78 Accepts]: Start accepts. Automaton has 20089 states and 30150 transitions. Word has length 64 [2021-12-28 03:48:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:48:56,613 INFO L470 AbstractCegarLoop]: Abstraction has 20089 states and 30150 transitions. [2021-12-28 03:48:56,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-28 03:48:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 20089 states and 30150 transitions. [2021-12-28 03:48:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-28 03:48:56,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:48:56,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:48:56,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 03:48:56,641 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:48:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:48:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash -561141611, now seen corresponding path program 1 times [2021-12-28 03:48:56,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:48:56,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599023169] [2021-12-28 03:48:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:48:56,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:48:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:48:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:48:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:48:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:48:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:48:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:48:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:48:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:48:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 03:48:56,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:48:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599023169] [2021-12-28 03:48:56,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599023169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:48:56,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:48:56,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:48:56,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049608687] [2021-12-28 03:48:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:48:56,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:48:56,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:48:56,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:48:56,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:48:56,990 INFO L87 Difference]: Start difference. First operand 20089 states and 30150 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 03:48:59,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-28 03:49:01,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []