/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-22 02:06:32,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-22 02:06:32,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-22 02:06:32,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-22 02:06:32,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-22 02:06:32,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-22 02:06:32,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-22 02:06:32,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-22 02:06:32,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-22 02:06:32,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-22 02:06:32,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-22 02:06:32,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-22 02:06:32,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-22 02:06:32,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-22 02:06:32,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-22 02:06:32,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-22 02:06:32,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-22 02:06:32,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-22 02:06:32,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-22 02:06:32,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-22 02:06:32,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-22 02:06:32,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-22 02:06:32,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-22 02:06:32,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-22 02:06:32,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-22 02:06:32,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-22 02:06:32,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-22 02:06:32,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-22 02:06:32,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-22 02:06:32,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-22 02:06:32,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-22 02:06:33,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-22 02:06:33,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-22 02:06:33,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-22 02:06:33,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-22 02:06:33,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-22 02:06:33,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-22 02:06:33,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-22 02:06:33,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-22 02:06:33,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-22 02:06:33,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-22 02:06:33,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-07-22 02:06:33,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-22 02:06:33,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-22 02:06:33,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-22 02:06:33,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-22 02:06:33,047 INFO L138 SettingsManager]: * Use SBE=true [2020-07-22 02:06:33,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-22 02:06:33,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-22 02:06:33,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-22 02:06:33,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-22 02:06:33,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-22 02:06:33,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-22 02:06:33,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-22 02:06:33,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-22 02:06:33,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-22 02:06:33,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-22 02:06:33,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-22 02:06:33,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-22 02:06:33,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-22 02:06:33,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-22 02:06:33,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-22 02:06:33,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-22 02:06:33,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-22 02:06:33,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-22 02:06:33,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:33,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-22 02:06:33,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-22 02:06:33,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-22 02:06:33,052 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-22 02:06:33,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-22 02:06:33,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-22 02:06:33,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-22 02:06:33,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-22 02:06:33,370 INFO L275 PluginConnector]: CDTParser initialized [2020-07-22 02:06:33,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i [2020-07-22 02:06:33,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5d99a25/0938e12bdf6c457888781d2b207c25e7/FLAG368482959 [2020-07-22 02:06:34,147 INFO L306 CDTParser]: Found 1 translation units. [2020-07-22 02:06:34,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i [2020-07-22 02:06:34,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5d99a25/0938e12bdf6c457888781d2b207c25e7/FLAG368482959 [2020-07-22 02:06:34,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5d99a25/0938e12bdf6c457888781d2b207c25e7 [2020-07-22 02:06:34,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-22 02:06:34,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-22 02:06:34,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-22 02:06:34,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-22 02:06:34,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-22 02:06:34,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:06:34" (1/1) ... [2020-07-22 02:06:34,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff7e86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:34, skipping insertion in model container [2020-07-22 02:06:34,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:06:34" (1/1) ... [2020-07-22 02:06:34,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-22 02:06:34,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-22 02:06:35,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-22 02:06:35,764 INFO L203 MainTranslator]: Completed pre-run [2020-07-22 02:06:36,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-22 02:06:36,238 INFO L208 MainTranslator]: Completed translation [2020-07-22 02:06:36,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36 WrapperNode [2020-07-22 02:06:36,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-22 02:06:36,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-22 02:06:36,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-22 02:06:36,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-22 02:06:36,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... [2020-07-22 02:06:36,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-22 02:06:36,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-22 02:06:36,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-22 02:06:36,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-22 02:06:36,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-22 02:06:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-22 02:06:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-22 02:06:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2020-07-22 02:06:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~TO~int [2020-07-22 02:06:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-07-22 02:06:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-07-22 02:06:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2020-07-22 02:06:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2020-07-22 02:06:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2020-07-22 02:06:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-22 02:06:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-22 02:06:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-07-22 02:06:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-07-22 02:06:36,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-07-22 02:06:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-07-22 02:06:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-07-22 02:06:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-07-22 02:06:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-07-22 02:06:36,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-07-22 02:06:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-07-22 02:06:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2020-07-22 02:06:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2020-07-22 02:06:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2020-07-22 02:06:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_address [2020-07-22 02:06:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2020-07-22 02:06:36,589 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2020-07-22 02:06:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_nb_num [2020-07-22 02:06:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_nb_has_feature [2020-07-22 02:06:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure node_to_amd_nb [2020-07-22 02:06:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gart_set_size_and_enable [2020-07-22 02:06:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_gart_translation [2020-07-22 02:06:36,590 INFO L138 BoogieDeclarations]: Found implementation of procedure aperture_valid [2020-07-22 02:06:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_tlbflush [2020-07-22 02:06:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_insert_memory [2020-07-22 02:06:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_fetch_size [2020-07-22 02:06:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_configure [2020-07-22 02:06:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_8151_configure [2020-07-22 02:06:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_cleanup [2020-07-22 02:06:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_aperture_valid [2020-07-22 02:06:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure fix_northbridge [2020-07-22 02:06:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_nbs [2020-07-22 02:06:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8151_init [2020-07-22 02:06:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure uli_agp_init [2020-07-22 02:06:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure nforce3_agp_init [2020-07-22 02:06:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_probe [2020-07-22 02:06:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_remove [2020-07-22 02:06:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_suspend [2020-07-22 02:06:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_resume [2020-07-22 02:06:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_init [2020-07-22 02:06:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_mod_init [2020-07-22 02:06:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_cleanup [2020-07-22 02:06:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_driver_1 [2020-07-22 02:06:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_agp_bridge_driver_2 [2020-07-22 02:06:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-22 02:06:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___pci_register_driver_5 [2020-07-22 02:06:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_6 [2020-07-22 02:06:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_7 [2020-07-22 02:06:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_8 [2020-07-22 02:06:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_9 [2020-07-22 02:06:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-07-22 02:06:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-07-22 02:06:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-07-22 02:06:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-07-22 02:06:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-07-22 02:06:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-22 02:06:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-22 02:06:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-22 02:06:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __pci_register_driver [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-07-22 02:06:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_add_bridge [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_alloc_bridge [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_alloc_by_type [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_alloc_page [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_alloc_pages [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_create_gatt_table [2020-07-22 02:06:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_destroy_page [2020-07-22 02:06:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_destroy_pages [2020-07-22 02:06:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_enable [2020-07-22 02:06:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_free_by_type [2020-07-22 02:06:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_free_gatt_table [2020-07-22 02:06:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_mask_memory [2020-07-22 02:06:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_remove_memory [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_type_to_mask_type [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_num_entries [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_put_bridge [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_remove_bridge [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_cache_northbridges [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_flush_garts [2020-07-22 02:06:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-07-22 02:06:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_attach [2020-07-22 02:06:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure e820_any_mapped [2020-07-22 02:06:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure global_cache_flush [2020-07-22 02:06:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-22 02:06:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_1 [2020-07-22 02:06:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_1 [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_suspend_late_1 [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_read_config_dword [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_read_config_word [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_write_config_dword [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_present [2020-07-22 02:06:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_slot [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pcibios_resource_to_bus [2020-07-22 02:06:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-07-22 02:06:36,604 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2020-07-22 02:06:36,604 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-22 02:06:36,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-22 02:06:36,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-22 02:06:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-22 02:06:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure e820_any_mapped [2020-07-22 02:06:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-22 02:06:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-07-22 02:06:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-07-22 02:06:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_driver_1 [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_agp_bridge_driver_2 [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure driver_attach [2020-07-22 02:06:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure pcibios_resource_to_bus [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_slot [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_present [2020-07-22 02:06:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_read_config_word [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_read_config_dword [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_write_config_dword [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2020-07-22 02:06:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_address [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-22 02:06:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __pci_register_driver [2020-07-22 02:06:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___pci_register_driver_5 [2020-07-22 02:06:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2020-07-22 02:06:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_6 [2020-07-22 02:06:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_7 [2020-07-22 02:06:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_8 [2020-07-22 02:06:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_9 [2020-07-22 02:06:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2020-07-22 02:06:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2020-07-22 02:06:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure amd_cache_northbridges [2020-07-22 02:06:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure amd_flush_garts [2020-07-22 02:06:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure amd_nb_num [2020-07-22 02:06:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure amd_nb_has_feature [2020-07-22 02:06:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure node_to_amd_nb [2020-07-22 02:06:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_init [2020-07-22 02:06:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure gart_set_size_and_enable [2020-07-22 02:06:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure enable_gart_translation [2020-07-22 02:06:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-22 02:06:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure aperture_valid [2020-07-22 02:06:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure agp_alloc_bridge [2020-07-22 02:06:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure agp_put_bridge [2020-07-22 02:06:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure agp_add_bridge [2020-07-22 02:06:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure agp_remove_bridge [2020-07-22 02:06:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_enable [2020-07-22 02:06:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_create_gatt_table [2020-07-22 02:06:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_free_gatt_table [2020-07-22 02:06:36,617 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_remove_memory [2020-07-22 02:06:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_alloc_by_type [2020-07-22 02:06:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_free_by_type [2020-07-22 02:06:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_alloc_page [2020-07-22 02:06:36,618 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_alloc_pages [2020-07-22 02:06:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_destroy_page [2020-07-22 02:06:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_destroy_pages [2020-07-22 02:06:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure agp_num_entries [2020-07-22 02:06:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure global_cache_flush [2020-07-22 02:06:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_mask_memory [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_type_to_mask_type [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_tlbflush [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_insert_memory [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~TO~int [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_fetch_size [2020-07-22 02:06:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_configure [2020-07-22 02:06:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure amd_8151_configure [2020-07-22 02:06:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_cleanup [2020-07-22 02:06:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure agp_aperture_valid [2020-07-22 02:06:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure fix_northbridge [2020-07-22 02:06:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure cache_nbs [2020-07-22 02:06:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure amd8151_init [2020-07-22 02:06:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure uli_agp_init [2020-07-22 02:06:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure nforce3_agp_init [2020-07-22 02:06:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_probe [2020-07-22 02:06:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_remove [2020-07-22 02:06:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_suspend [2020-07-22 02:06:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_resume [2020-07-22 02:06:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_mod_init [2020-07-22 02:06:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_cleanup [2020-07-22 02:06:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_1 [2020-07-22 02:06:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_1 [2020-07-22 02:06:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_suspend_late_1 [2020-07-22 02:06:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-22 02:06:36,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-22 02:06:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-22 02:06:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-07-22 02:06:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-07-22 02:06:36,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-07-22 02:06:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-07-22 02:06:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-07-22 02:06:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-22 02:06:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-22 02:06:36,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-22 02:06:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-22 02:06:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-22 02:06:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-22 02:06:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-22 02:06:36,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-22 02:06:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-22 02:06:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-22 02:06:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-22 02:06:36,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-22 02:06:37,624 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-07-22 02:06:42,132 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-22 02:06:42,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-22 02:06:42,515 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-22 02:06:42,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:06:42 BoogieIcfgContainer [2020-07-22 02:06:42,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-22 02:06:42,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-22 02:06:42,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-22 02:06:42,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-22 02:06:42,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:06:34" (1/3) ... [2020-07-22 02:06:42,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc1dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:06:42, skipping insertion in model container [2020-07-22 02:06:42,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:36" (2/3) ... [2020-07-22 02:06:42,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc1dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:06:42, skipping insertion in model container [2020-07-22 02:06:42,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:06:42" (3/3) ... [2020-07-22 02:06:42,532 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i [2020-07-22 02:06:42,542 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-22 02:06:42,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-22 02:06:42,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-22 02:06:42,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-22 02:06:42,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-22 02:06:42,593 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-22 02:06:42,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-22 02:06:42,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-22 02:06:42,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-22 02:06:42,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-22 02:06:42,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-22 02:06:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states. [2020-07-22 02:06:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-22 02:06:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:42,649 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:42,649 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:42,656 INFO L82 PathProgramCache]: Analyzing trace with hash 887876909, now seen corresponding path program 1 times [2020-07-22 02:06:42,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:42,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335793551] [2020-07-22 02:06:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:43,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:43,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:43,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-22 02:06:43,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:43,652 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2020-07-22 02:06:43,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 02:06:43,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335793551] [2020-07-22 02:06:43,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 02:06:43,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-22 02:06:43,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467519993] [2020-07-22 02:06:43,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-22 02:06:43,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:43,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-22 02:06:43,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-22 02:06:43,677 INFO L87 Difference]: Start difference. First operand 869 states. Second operand 2 states. [2020-07-22 02:06:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:43,817 INFO L93 Difference]: Finished difference Result 1711 states and 2243 transitions. [2020-07-22 02:06:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-22 02:06:43,819 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 207 [2020-07-22 02:06:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:43,851 INFO L225 Difference]: With dead ends: 1711 [2020-07-22 02:06:43,851 INFO L226 Difference]: Without dead ends: 845 [2020-07-22 02:06:43,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-22 02:06:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-07-22 02:06:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2020-07-22 02:06:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-07-22 02:06:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1086 transitions. [2020-07-22 02:06:44,021 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1086 transitions. Word has length 207 [2020-07-22 02:06:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:44,022 INFO L479 AbstractCegarLoop]: Abstraction has 845 states and 1086 transitions. [2020-07-22 02:06:44,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-22 02:06:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1086 transitions. [2020-07-22 02:06:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-22 02:06:44,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:44,036 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:44,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:44,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1980725417, now seen corresponding path program 1 times [2020-07-22 02:06:44,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:44,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065375718] [2020-07-22 02:06:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:45,084 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:45,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:45,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-22 02:06:45,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:45,145 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-07-22 02:06:45,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 02:06:45,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065375718] [2020-07-22 02:06:45,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 02:06:45,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-22 02:06:45,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828584811] [2020-07-22 02:06:45,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-22 02:06:45,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:45,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-22 02:06:45,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-22 02:06:45,223 INFO L87 Difference]: Start difference. First operand 845 states and 1086 transitions. Second operand 6 states. [2020-07-22 02:06:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:45,498 INFO L93 Difference]: Finished difference Result 1682 states and 2174 transitions. [2020-07-22 02:06:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-22 02:06:45,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2020-07-22 02:06:45,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:45,507 INFO L225 Difference]: With dead ends: 1682 [2020-07-22 02:06:45,507 INFO L226 Difference]: Without dead ends: 846 [2020-07-22 02:06:45,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-22 02:06:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-07-22 02:06:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2020-07-22 02:06:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-07-22 02:06:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1087 transitions. [2020-07-22 02:06:45,560 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1087 transitions. Word has length 207 [2020-07-22 02:06:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:45,562 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1087 transitions. [2020-07-22 02:06:45,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-22 02:06:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1087 transitions. [2020-07-22 02:06:45,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-07-22 02:06:45,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:45,568 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:45,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:45,784 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:45,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash -61871863, now seen corresponding path program 1 times [2020-07-22 02:06:45,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:45,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157800042] [2020-07-22 02:06:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:46,618 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:46,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:46,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-22 02:06:46,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:46,663 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 144 proven. 1 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2020-07-22 02:06:46,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:06:46,996 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:06:47,033 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:06:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2020-07-22 02:06:47,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157800042] [2020-07-22 02:06:47,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:06:47,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-22 02:06:47,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222291024] [2020-07-22 02:06:47,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-22 02:06:47,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:47,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-22 02:06:47,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-07-22 02:06:47,177 INFO L87 Difference]: Start difference. First operand 846 states and 1087 transitions. Second operand 11 states. [2020-07-22 02:06:47,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:47,481 INFO L93 Difference]: Finished difference Result 1689 states and 2182 transitions. [2020-07-22 02:06:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-22 02:06:47,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 220 [2020-07-22 02:06:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:47,487 INFO L225 Difference]: With dead ends: 1689 [2020-07-22 02:06:47,487 INFO L226 Difference]: Without dead ends: 852 [2020-07-22 02:06:47,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 427 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-22 02:06:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-07-22 02:06:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2020-07-22 02:06:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-07-22 02:06:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1093 transitions. [2020-07-22 02:06:47,517 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1093 transitions. Word has length 220 [2020-07-22 02:06:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:47,518 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1093 transitions. [2020-07-22 02:06:47,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-22 02:06:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1093 transitions. [2020-07-22 02:06:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-07-22 02:06:47,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:47,522 INFO L422 BasicCegarLoop]: trace histogram [26, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:47,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:47,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:47,738 INFO L82 PathProgramCache]: Analyzing trace with hash -712952919, now seen corresponding path program 2 times [2020-07-22 02:06:47,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:47,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885690482] [2020-07-22 02:06:47,740 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:48,535 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:48,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:48,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-22 02:06:48,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:48,595 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 204 proven. 3 refuted. 0 times theorem prover too weak. 1172 trivial. 0 not checked. [2020-07-22 02:06:48,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:06:48,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:06:49,008 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:06:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2020-07-22 02:06:49,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885690482] [2020-07-22 02:06:49,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:06:49,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-22 02:06:49,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565775029] [2020-07-22 02:06:49,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-22 02:06:49,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:49,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-22 02:06:49,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-07-22 02:06:49,162 INFO L87 Difference]: Start difference. First operand 852 states and 1093 transitions. Second operand 13 states. [2020-07-22 02:06:49,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:49,462 INFO L93 Difference]: Finished difference Result 1699 states and 2191 transitions. [2020-07-22 02:06:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-22 02:06:49,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-07-22 02:06:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:49,467 INFO L225 Difference]: With dead ends: 1699 [2020-07-22 02:06:49,467 INFO L226 Difference]: Without dead ends: 853 [2020-07-22 02:06:49,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 451 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-07-22 02:06:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-07-22 02:06:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2020-07-22 02:06:49,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-07-22 02:06:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1094 transitions. [2020-07-22 02:06:49,499 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1094 transitions. Word has length 233 [2020-07-22 02:06:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:49,499 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1094 transitions. [2020-07-22 02:06:49,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-22 02:06:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1094 transitions. [2020-07-22 02:06:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-07-22 02:06:49,504 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:49,504 INFO L422 BasicCegarLoop]: trace histogram [39, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:49,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:49,720 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:49,721 INFO L82 PathProgramCache]: Analyzing trace with hash 881109001, now seen corresponding path program 3 times [2020-07-22 02:06:49,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:49,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694319516] [2020-07-22 02:06:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:50,614 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:50,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-22 02:06:50,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:50,672 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 288 proven. 6 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2020-07-22 02:06:50,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:06:51,051 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:06:51,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:06:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2020-07-22 02:06:51,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694319516] [2020-07-22 02:06:51,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:06:51,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-22 02:06:51,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261104108] [2020-07-22 02:06:51,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-22 02:06:51,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:51,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-22 02:06:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-22 02:06:51,280 INFO L87 Difference]: Start difference. First operand 853 states and 1094 transitions. Second operand 15 states. [2020-07-22 02:06:51,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:51,585 INFO L93 Difference]: Finished difference Result 1701 states and 2193 transitions. [2020-07-22 02:06:51,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-22 02:06:51,586 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 246 [2020-07-22 02:06:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:51,592 INFO L225 Difference]: With dead ends: 1701 [2020-07-22 02:06:51,592 INFO L226 Difference]: Without dead ends: 854 [2020-07-22 02:06:51,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 475 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-07-22 02:06:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-07-22 02:06:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2020-07-22 02:06:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-07-22 02:06:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1095 transitions. [2020-07-22 02:06:51,634 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1095 transitions. Word has length 246 [2020-07-22 02:06:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:51,634 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1095 transitions. [2020-07-22 02:06:51,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-22 02:06:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1095 transitions. [2020-07-22 02:06:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-07-22 02:06:51,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:51,639 INFO L422 BasicCegarLoop]: trace histogram [52, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:51,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:51,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:51,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:51,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1803316905, now seen corresponding path program 4 times [2020-07-22 02:06:51,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:51,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892716807] [2020-07-22 02:06:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:52,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:52,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:52,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-22 02:06:52,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:52,739 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 757 proven. 10 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2020-07-22 02:06:52,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:06:53,146 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:06:53,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:06:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 31 proven. 351 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2020-07-22 02:06:53,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892716807] [2020-07-22 02:06:53,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:06:53,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-07-22 02:06:53,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695592347] [2020-07-22 02:06:53,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-22 02:06:53,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:53,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-22 02:06:53,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-22 02:06:53,417 INFO L87 Difference]: Start difference. First operand 854 states and 1095 transitions. Second operand 17 states. [2020-07-22 02:06:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:53,795 INFO L93 Difference]: Finished difference Result 1704 states and 2188 transitions. [2020-07-22 02:06:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-22 02:06:53,795 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 259 [2020-07-22 02:06:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:53,803 INFO L225 Difference]: With dead ends: 1704 [2020-07-22 02:06:53,803 INFO L226 Difference]: Without dead ends: 863 [2020-07-22 02:06:53,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 499 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-07-22 02:06:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-07-22 02:06:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2020-07-22 02:06:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-07-22 02:06:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1105 transitions. [2020-07-22 02:06:53,841 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1105 transitions. Word has length 259 [2020-07-22 02:06:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:53,843 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1105 transitions. [2020-07-22 02:06:53,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-22 02:06:53,843 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1105 transitions. [2020-07-22 02:06:53,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-22 02:06:53,854 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:53,855 INFO L422 BasicCegarLoop]: trace histogram [57, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:54,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:54,070 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:54,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1182289421, now seen corresponding path program 5 times [2020-07-22 02:06:54,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:54,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057930474] [2020-07-22 02:06:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:55,101 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:55,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:55,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-22 02:06:55,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:55,203 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 861 proven. 15 refuted. 0 times theorem prover too weak. 2177 trivial. 0 not checked. [2020-07-22 02:06:55,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:06:55,603 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:06:55,652 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:06:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 36 proven. 435 refuted. 0 times theorem prover too weak. 2582 trivial. 0 not checked. [2020-07-22 02:06:55,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057930474] [2020-07-22 02:06:55,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:06:55,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-07-22 02:06:55,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672481346] [2020-07-22 02:06:55,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-22 02:06:55,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-22 02:06:55,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-07-22 02:06:55,903 INFO L87 Difference]: Start difference. First operand 863 states and 1105 transitions. Second operand 19 states. [2020-07-22 02:06:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:56,268 INFO L93 Difference]: Finished difference Result 1719 states and 2205 transitions. [2020-07-22 02:06:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-22 02:06:56,268 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 264 [2020-07-22 02:06:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:56,279 INFO L225 Difference]: With dead ends: 1719 [2020-07-22 02:06:56,280 INFO L226 Difference]: Without dead ends: 867 [2020-07-22 02:06:56,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 507 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-07-22 02:06:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-07-22 02:06:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 864. [2020-07-22 02:06:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-07-22 02:06:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1106 transitions. [2020-07-22 02:06:56,319 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1106 transitions. Word has length 264 [2020-07-22 02:06:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:56,320 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1106 transitions. [2020-07-22 02:06:56,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-22 02:06:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1106 transitions. [2020-07-22 02:06:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-22 02:06:56,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:56,323 INFO L422 BasicCegarLoop]: trace histogram [62, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:56,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:56,537 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash -981148631, now seen corresponding path program 6 times [2020-07-22 02:06:56,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:56,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837940984] [2020-07-22 02:06:56,539 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:57,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:57,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:57,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-22 02:06:57,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:57,395 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 973 proven. 21 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2020-07-22 02:06:57,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:06:57,869 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:06:57,914 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:06:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 41 proven. 528 refuted. 0 times theorem prover too weak. 2844 trivial. 0 not checked. [2020-07-22 02:06:58,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837940984] [2020-07-22 02:06:58,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:06:58,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2020-07-22 02:06:58,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616053834] [2020-07-22 02:06:58,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-22 02:06:58,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:06:58,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-22 02:06:58,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-07-22 02:06:58,196 INFO L87 Difference]: Start difference. First operand 864 states and 1106 transitions. Second operand 21 states. [2020-07-22 02:06:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:06:58,614 INFO L93 Difference]: Finished difference Result 1724 states and 2211 transitions. [2020-07-22 02:06:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-22 02:06:58,615 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 269 [2020-07-22 02:06:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:06:58,624 INFO L225 Difference]: With dead ends: 1724 [2020-07-22 02:06:58,624 INFO L226 Difference]: Without dead ends: 871 [2020-07-22 02:06:58,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 515 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=567, Unknown=0, NotChecked=0, Total=812 [2020-07-22 02:06:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-07-22 02:06:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 865. [2020-07-22 02:06:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-07-22 02:06:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1107 transitions. [2020-07-22 02:06:58,660 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1107 transitions. Word has length 269 [2020-07-22 02:06:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:06:58,661 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1107 transitions. [2020-07-22 02:06:58,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-22 02:06:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1107 transitions. [2020-07-22 02:06:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-22 02:06:58,664 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:06:58,664 INFO L422 BasicCegarLoop]: trace histogram [67, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:06:58,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:58,878 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:06:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:06:58,878 INFO L82 PathProgramCache]: Analyzing trace with hash -846645619, now seen corresponding path program 7 times [2020-07-22 02:06:58,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:06:58,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84234162] [2020-07-22 02:06:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:59,645 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-22 02:06:59,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:06:59,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-22 02:06:59,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:06:59,738 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-22 02:06:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3798 backedges. 1093 proven. 28 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2020-07-22 02:06:59,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:07:00,261 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-22 02:07:00,309 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-22 02:07:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3798 backedges. 46 proven. 630 refuted. 0 times theorem prover too weak. 3122 trivial. 0 not checked. [2020-07-22 02:07:00,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84234162] [2020-07-22 02:07:00,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:07:00,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2020-07-22 02:07:00,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379283826] [2020-07-22 02:07:00,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-22 02:07:00,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-22 02:07:00,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-07-22 02:07:00,609 INFO L87 Difference]: Start difference. First operand 865 states and 1107 transitions. Second operand 23 states. [2020-07-22 02:07:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:01,088 INFO L93 Difference]: Finished difference Result 1729 states and 2217 transitions. [2020-07-22 02:07:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-22 02:07:01,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 274 [2020-07-22 02:07:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:01,094 INFO L225 Difference]: With dead ends: 1729 [2020-07-22 02:07:01,094 INFO L226 Difference]: Without dead ends: 875 [2020-07-22 02:07:01,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 523 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=687, Unknown=0, NotChecked=0, Total=992 [2020-07-22 02:07:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-07-22 02:07:01,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 866. [2020-07-22 02:07:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-07-22 02:07:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1108 transitions. [2020-07-22 02:07:01,135 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1108 transitions. Word has length 274 [2020-07-22 02:07:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:01,136 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1108 transitions. [2020-07-22 02:07:01,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-22 02:07:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1108 transitions. [2020-07-22 02:07:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-22 02:07:01,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:01,139 INFO L422 BasicCegarLoop]: trace histogram [72, 13, 13, 13, 13, 13, 13, 13, 13, 2, 2, 2, 2, 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, 1] [2020-07-22 02:07:01,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:01,352 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1932416599, now seen corresponding path program 8 times [2020-07-22 02:07:01,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:01,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095995047] [2020-07-22 02:07:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in