/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 [2020-07-21 04:37:55,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 04:37:55,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 04:37:55,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 04:37:55,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 04:37:55,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 04:37:55,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 04:37:55,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 04:37:55,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 04:37:55,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 04:37:55,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 04:37:55,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 04:37:55,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 04:37:55,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 04:37:55,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 04:37:55,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 04:37:55,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 04:37:55,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 04:37:55,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 04:37:55,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 04:37:55,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 04:37:55,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 04:37:55,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 04:37:55,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 04:37:55,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 04:37:55,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 04:37:55,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 04:37:55,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 04:37:55,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 04:37:55,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 04:37:55,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 04:37:55,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 04:37:55,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 04:37:55,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 04:37:55,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 04:37:55,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 04:37:55,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 04:37:55,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 04:37:55,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 04:37:55,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 04:37:55,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 04:37:55,547 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 [2020-07-21 04:37:55,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 04:37:55,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 04:37:55,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 04:37:55,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 04:37:55,573 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 04:37:55,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 04:37:55,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 04:37:55,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 04:37:55,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 04:37:55,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 04:37:55,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 04:37:55,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 04:37:55,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 04:37:55,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 04:37:55,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 04:37:55,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 04:37:55,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 04:37:55,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 04:37:55,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 04:37:55,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 04:37:55,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 04:37:55,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 04:37:55,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 04:37:55,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:37:55,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 04:37:55,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 04:37:55,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-21 04:37:55,577 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 [2020-07-21 04:37:55,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 04:37:55,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 04:37:55,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 04:37:55,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 04:37:55,903 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 04:37:55,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i [2020-07-21 04:37:55,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3362079/cbf3e8e17ffc4138a185237c643f11c3/FLAG3b23d14aa [2020-07-21 04:37:56,710 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 04:37:56,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i [2020-07-21 04:37:56,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3362079/cbf3e8e17ffc4138a185237c643f11c3/FLAG3b23d14aa [2020-07-21 04:37:57,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3362079/cbf3e8e17ffc4138a185237c643f11c3 [2020-07-21 04:37:57,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 04:37:57,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 04:37:57,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 04:37:57,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 04:37:57,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 04:37:57,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:37:57" (1/1) ... [2020-07-21 04:37:57,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d35c0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57, skipping insertion in model container [2020-07-21 04:37:57,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:37:57" (1/1) ... [2020-07-21 04:37:57,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 04:37:57,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 04:37:58,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 04:37:58,874 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 04:37:59,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 04:37:59,211 INFO L208 MainTranslator]: Completed translation [2020-07-21 04:37:59,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59 WrapperNode [2020-07-21 04:37:59,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 04:37:59,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 04:37:59,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 04:37:59,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 04:37:59,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (1/1) ... [2020-07-21 04:37:59,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 04:37:59,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 04:37:59,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 04:37:59,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 04:37:59,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (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 [2020-07-21 04:37:59,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 04:37:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 04:37:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2020-07-21 04:37:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~TO~int [2020-07-21 04:37:59,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-07-21 04:37:59,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-07-21 04:37:59,609 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2020-07-21 04:37:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2020-07-21 04:37:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2020-07-21 04:37:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 04:37:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 04:37:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-07-21 04:37:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-07-21 04:37:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-07-21 04:37:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-07-21 04:37:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-07-21 04:37:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-07-21 04:37:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-07-21 04:37:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-07-21 04:37:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-07-21 04:37:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2020-07-21 04:37:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2020-07-21 04:37:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2020-07-21 04:37:59,616 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_address [2020-07-21 04:37:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2020-07-21 04:37:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2020-07-21 04:37:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_nb_num [2020-07-21 04:37:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_nb_has_feature [2020-07-21 04:37:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure node_to_amd_nb [2020-07-21 04:37:59,617 INFO L138 BoogieDeclarations]: Found implementation of procedure gart_set_size_and_enable [2020-07-21 04:37:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_gart_translation [2020-07-21 04:37:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure aperture_valid [2020-07-21 04:37:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_tlbflush [2020-07-21 04:37:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_insert_memory [2020-07-21 04:37:59,618 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_fetch_size [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_configure [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_8151_configure [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure amd64_cleanup [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_aperture_valid [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure fix_northbridge [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure cache_nbs [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure amd8151_init [2020-07-21 04:37:59,619 INFO L138 BoogieDeclarations]: Found implementation of procedure uli_agp_init [2020-07-21 04:37:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure nforce3_agp_init [2020-07-21 04:37:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_probe [2020-07-21 04:37:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_remove [2020-07-21 04:37:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_suspend [2020-07-21 04:37:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_resume [2020-07-21 04:37:59,620 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_init [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_mod_init [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_amd64_cleanup [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_driver_1 [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_agp_bridge_driver_2 [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___pci_register_driver_5 [2020-07-21 04:37:59,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_6 [2020-07-21 04:37:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_7 [2020-07-21 04:37:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_8 [2020-07-21 04:37:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pci_unregister_driver_9 [2020-07-21 04:37:59,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-07-21 04:37:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-07-21 04:37:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-07-21 04:37:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-07-21 04:37:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-07-21 04:37:59,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-21 04:37:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-21 04:37:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-21 04:37:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-21 04:37:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-21 04:37:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 04:37:59,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __pci_register_driver [2020-07-21 04:37:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2020-07-21 04:37:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-07-21 04:37:59,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-07-21 04:37:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2020-07-21 04:37:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_add_bridge [2020-07-21 04:37:59,626 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_alloc_bridge [2020-07-21 04:37:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_alloc_by_type [2020-07-21 04:37:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_alloc_page [2020-07-21 04:37:59,627 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_alloc_pages [2020-07-21 04:37:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_create_gatt_table [2020-07-21 04:37:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_destroy_page [2020-07-21 04:37:59,628 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_destroy_pages [2020-07-21 04:37:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_enable [2020-07-21 04:37:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_free_by_type [2020-07-21 04:37:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_free_gatt_table [2020-07-21 04:37:59,629 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_mask_memory [2020-07-21 04:37:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_remove_memory [2020-07-21 04:37:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_generic_type_to_mask_type [2020-07-21 04:37:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_num_entries [2020-07-21 04:37:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_put_bridge [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure agp_remove_bridge [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_cache_northbridges [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure amd_flush_garts [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_attach [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure e820_any_mapped [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure global_cache_flush [2020-07-21 04:37:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_1 [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_1 [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_suspend_late_1 [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_read_config_dword [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_read_config_word [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_bus_write_config_dword [2020-07-21 04:37:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2020-07-21 04:37:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_present [2020-07-21 04:37:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2020-07-21 04:37:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2020-07-21 04:37:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_slot [2020-07-21 04:37:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2020-07-21 04:37:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2020-07-21 04:37:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2020-07-21 04:37:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2020-07-21 04:37:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure pcibios_resource_to_bus [2020-07-21 04:37:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-07-21 04:37:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2020-07-21 04:37:59,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-21 04:37:59,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-21 04:37:59,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-21 04:37:59,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 04:37:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-07-21 04:37:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-07-21 04:37:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-07-21 04:37:59,636 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-07-21 04:37:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2020-07-21 04:37:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-21 04:37:59,637 INFO L130 BoogieDeclarations]: Found specification of procedure e820_any_mapped [2020-07-21 04:37:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2020-07-21 04:37:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-07-21 04:37:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-07-21 04:37:59,638 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2020-07-21 04:37:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2020-07-21 04:37:59,639 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2020-07-21 04:37:59,640 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 04:37:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 04:37:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 04:37:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-21 04:37:59,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 04:37:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 04:37:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 04:37:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 04:37:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-07-21 04:37:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-21 04:37:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-07-21 04:37:59,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-07-21 04:37:59,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-21 04:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-07-21 04:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-07-21 04:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-07-21 04:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_driver_1 [2020-07-21 04:37:59,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_agp_bridge_driver_2 [2020-07-21 04:37:59,654 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-07-21 04:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 04:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-07-21 04:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 04:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure driver_attach [2020-07-21 04:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-07-21 04:37:59,655 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pcibios_resource_to_bus [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_slot [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_present [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_read_config_word [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_read_config_dword [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_write_config_dword [2020-07-21 04:37:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2020-07-21 04:37:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_bus_address [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure __pci_register_driver [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___pci_register_driver_5 [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_6 [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_7 [2020-07-21 04:37:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_8 [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pci_unregister_driver_9 [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure amd_cache_northbridges [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure amd_flush_garts [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure amd_nb_num [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure amd_nb_has_feature [2020-07-21 04:37:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure node_to_amd_nb [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_init [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure gart_set_size_and_enable [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure enable_gart_translation [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure aperture_valid [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure agp_alloc_bridge [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure agp_put_bridge [2020-07-21 04:37:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure agp_add_bridge [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_remove_bridge [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_enable [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_create_gatt_table [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_free_gatt_table [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_remove_memory [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_alloc_by_type [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_free_by_type [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_alloc_page [2020-07-21 04:37:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_alloc_pages [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_destroy_page [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_destroy_pages [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure agp_num_entries [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure global_cache_flush [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_mask_memory [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure agp_generic_type_to_mask_type [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_tlbflush [2020-07-21 04:37:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_insert_memory [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~TO~int [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_fetch_size [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_configure [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure amd_8151_configure [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure amd64_cleanup [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure agp_aperture_valid [2020-07-21 04:37:59,663 INFO L130 BoogieDeclarations]: Found specification of procedure fix_northbridge [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure cache_nbs [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure amd8151_init [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure uli_agp_init [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure nforce3_agp_init [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_probe [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_remove [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_suspend [2020-07-21 04:37:59,664 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_resume [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_mod_init [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure agp_amd64_cleanup [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_1 [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_1 [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_suspend_late_1 [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 04:37:59,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-21 04:37:59,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 04:37:59,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-21 04:37:59,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 04:38:02,686 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-07-21 04:38:07,709 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-21 04:38:08,098 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 04:38:08,100 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 04:38:08,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:38:08 BoogieIcfgContainer [2020-07-21 04:38:08,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 04:38:08,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 04:38:08,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 04:38:08,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 04:38:08,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:37:57" (1/3) ... [2020-07-21 04:38:08,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2dc2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:38:08, skipping insertion in model container [2020-07-21 04:38:08,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:59" (2/3) ... [2020-07-21 04:38:08,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2dc2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:38:08, skipping insertion in model container [2020-07-21 04:38:08,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:38:08" (3/3) ... [2020-07-21 04:38:08,133 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--char--agp--amd64-agp.ko-entry_point.cil.out.i [2020-07-21 04:38:08,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 04:38:08,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 04:38:08,174 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 04:38:08,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 04:38:08,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 04:38:08,208 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 04:38:08,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 04:38:08,208 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 04:38:08,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 04:38:08,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 04:38:08,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 04:38:08,261 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states. [2020-07-21 04:38:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-21 04:38:08,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:08,300 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] [2020-07-21 04:38:08,303 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash 887876909, now seen corresponding path program 1 times [2020-07-21 04:38:08,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:08,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090076090] [2020-07-21 04:38:08,322 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 [2020-07-21 04:38:09,306 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:09,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:09,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 04:38:09,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2020-07-21 04:38:09,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 04:38:09,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090076090] [2020-07-21 04:38:09,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 04:38:09,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 04:38:09,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908285773] [2020-07-21 04:38:09,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 04:38:09,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 04:38:09,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 04:38:09,435 INFO L87 Difference]: Start difference. First operand 869 states. Second operand 2 states. [2020-07-21 04:38:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:09,621 INFO L93 Difference]: Finished difference Result 1711 states and 2243 transitions. [2020-07-21 04:38:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 04:38:09,623 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 207 [2020-07-21 04:38:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:09,660 INFO L225 Difference]: With dead ends: 1711 [2020-07-21 04:38:09,660 INFO L226 Difference]: Without dead ends: 845 [2020-07-21 04:38:09,673 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 [2020-07-21 04:38:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-07-21 04:38:09,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2020-07-21 04:38:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2020-07-21 04:38:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1086 transitions. [2020-07-21 04:38:09,852 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1086 transitions. Word has length 207 [2020-07-21 04:38:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:09,853 INFO L479 AbstractCegarLoop]: Abstraction has 845 states and 1086 transitions. [2020-07-21 04:38:09,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 04:38:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1086 transitions. [2020-07-21 04:38:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-21 04:38:09,862 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:09,862 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] [2020-07-21 04:38:10,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:10,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:10,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1980725417, now seen corresponding path program 1 times [2020-07-21 04:38:10,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:10,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94989899] [2020-07-21 04:38:10,081 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 [2020-07-21 04:38:11,106 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:11,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:11,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 04:38:11,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:11,173 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-07-21 04:38:11,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 04:38:11,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94989899] [2020-07-21 04:38:11,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 04:38:11,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 04:38:11,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784598742] [2020-07-21 04:38:11,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 04:38:11,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:11,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 04:38:11,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 04:38:11,259 INFO L87 Difference]: Start difference. First operand 845 states and 1086 transitions. Second operand 6 states. [2020-07-21 04:38:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:11,567 INFO L93 Difference]: Finished difference Result 1682 states and 2174 transitions. [2020-07-21 04:38:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 04:38:11,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2020-07-21 04:38:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:11,574 INFO L225 Difference]: With dead ends: 1682 [2020-07-21 04:38:11,574 INFO L226 Difference]: Without dead ends: 846 [2020-07-21 04:38:11,578 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 [2020-07-21 04:38:11,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-07-21 04:38:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2020-07-21 04:38:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-07-21 04:38:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1087 transitions. [2020-07-21 04:38:11,612 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1087 transitions. Word has length 207 [2020-07-21 04:38:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:11,615 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1087 transitions. [2020-07-21 04:38:11,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 04:38:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1087 transitions. [2020-07-21 04:38:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-07-21 04:38:11,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:11,619 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] [2020-07-21 04:38:11,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:11,834 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash -61871863, now seen corresponding path program 1 times [2020-07-21 04:38:11,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:11,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171041936] [2020-07-21 04:38:11,836 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 [2020-07-21 04:38:12,562 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:12,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:12,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 04:38:12,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:12,618 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 144 proven. 1 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2020-07-21 04:38:12,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:13,019 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:13,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2020-07-21 04:38:13,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171041936] [2020-07-21 04:38:13,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:13,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 04:38:13,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101842402] [2020-07-21 04:38:13,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 04:38:13,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:13,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 04:38:13,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-07-21 04:38:13,283 INFO L87 Difference]: Start difference. First operand 846 states and 1087 transitions. Second operand 11 states. [2020-07-21 04:38:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:13,611 INFO L93 Difference]: Finished difference Result 1689 states and 2182 transitions. [2020-07-21 04:38:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 04:38:13,612 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 220 [2020-07-21 04:38:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:13,618 INFO L225 Difference]: With dead ends: 1689 [2020-07-21 04:38:13,618 INFO L226 Difference]: Without dead ends: 852 [2020-07-21 04:38:13,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 427 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-21 04:38:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-07-21 04:38:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2020-07-21 04:38:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-07-21 04:38:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1093 transitions. [2020-07-21 04:38:13,696 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1093 transitions. Word has length 220 [2020-07-21 04:38:13,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:13,697 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1093 transitions. [2020-07-21 04:38:13,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 04:38:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1093 transitions. [2020-07-21 04:38:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-07-21 04:38:13,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:13,702 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] [2020-07-21 04:38:13,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:13,917 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:13,917 INFO L82 PathProgramCache]: Analyzing trace with hash -712952919, now seen corresponding path program 2 times [2020-07-21 04:38:13,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:13,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296391845] [2020-07-21 04:38:13,918 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 [2020-07-21 04:38:14,621 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:14,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:14,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 04:38:14,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:14,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 204 proven. 3 refuted. 0 times theorem prover too weak. 1172 trivial. 0 not checked. [2020-07-21 04:38:14,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:15,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:15,126 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2020-07-21 04:38:15,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296391845] [2020-07-21 04:38:15,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:15,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-21 04:38:15,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592165548] [2020-07-21 04:38:15,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 04:38:15,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 04:38:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-07-21 04:38:15,292 INFO L87 Difference]: Start difference. First operand 852 states and 1093 transitions. Second operand 13 states. [2020-07-21 04:38:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:15,623 INFO L93 Difference]: Finished difference Result 1699 states and 2191 transitions. [2020-07-21 04:38:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 04:38:15,624 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-07-21 04:38:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:15,630 INFO L225 Difference]: With dead ends: 1699 [2020-07-21 04:38:15,630 INFO L226 Difference]: Without dead ends: 853 [2020-07-21 04:38:15,634 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 [2020-07-21 04:38:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-07-21 04:38:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2020-07-21 04:38:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-07-21 04:38:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1094 transitions. [2020-07-21 04:38:15,668 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1094 transitions. Word has length 233 [2020-07-21 04:38:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:15,669 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1094 transitions. [2020-07-21 04:38:15,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 04:38:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1094 transitions. [2020-07-21 04:38:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-07-21 04:38:15,675 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:15,676 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] [2020-07-21 04:38:15,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:15,891 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:15,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:15,891 INFO L82 PathProgramCache]: Analyzing trace with hash 881109001, now seen corresponding path program 3 times [2020-07-21 04:38:15,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:15,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610123420] [2020-07-21 04:38:15,892 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 [2020-07-21 04:38:16,612 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:16,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:16,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 04:38:16,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:16,666 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 288 proven. 6 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2020-07-21 04:38:16,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:17,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:17,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2020-07-21 04:38:17,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610123420] [2020-07-21 04:38:17,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:17,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-07-21 04:38:17,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269503362] [2020-07-21 04:38:17,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 04:38:17,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 04:38:17,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-21 04:38:17,256 INFO L87 Difference]: Start difference. First operand 853 states and 1094 transitions. Second operand 15 states. [2020-07-21 04:38:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:17,526 INFO L93 Difference]: Finished difference Result 1701 states and 2193 transitions. [2020-07-21 04:38:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 04:38:17,526 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 246 [2020-07-21 04:38:17,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:17,532 INFO L225 Difference]: With dead ends: 1701 [2020-07-21 04:38:17,532 INFO L226 Difference]: Without dead ends: 854 [2020-07-21 04:38:17,537 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 [2020-07-21 04:38:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-07-21 04:38:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2020-07-21 04:38:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2020-07-21 04:38:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1095 transitions. [2020-07-21 04:38:17,583 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1095 transitions. Word has length 246 [2020-07-21 04:38:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:17,583 INFO L479 AbstractCegarLoop]: Abstraction has 854 states and 1095 transitions. [2020-07-21 04:38:17,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 04:38:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1095 transitions. [2020-07-21 04:38:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-07-21 04:38:17,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:17,589 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] [2020-07-21 04:38:17,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:17,803 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:17,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:17,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1803316905, now seen corresponding path program 4 times [2020-07-21 04:38:17,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:17,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414751318] [2020-07-21 04:38:17,804 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 [2020-07-21 04:38:18,557 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:18,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 04:38:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:18,641 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 757 proven. 10 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2020-07-21 04:38:18,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:19,027 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:19,077 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 31 proven. 351 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2020-07-21 04:38:19,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414751318] [2020-07-21 04:38:19,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:19,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-07-21 04:38:19,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534986194] [2020-07-21 04:38:19,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 04:38:19,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 04:38:19,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-21 04:38:19,368 INFO L87 Difference]: Start difference. First operand 854 states and 1095 transitions. Second operand 17 states. [2020-07-21 04:38:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:19,877 INFO L93 Difference]: Finished difference Result 1704 states and 2188 transitions. [2020-07-21 04:38:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 04:38:19,878 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 259 [2020-07-21 04:38:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:19,887 INFO L225 Difference]: With dead ends: 1704 [2020-07-21 04:38:19,887 INFO L226 Difference]: Without dead ends: 863 [2020-07-21 04:38:19,895 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 [2020-07-21 04:38:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-07-21 04:38:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2020-07-21 04:38:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-07-21 04:38:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1105 transitions. [2020-07-21 04:38:19,936 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1105 transitions. Word has length 259 [2020-07-21 04:38:19,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:19,942 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1105 transitions. [2020-07-21 04:38:19,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 04:38:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1105 transitions. [2020-07-21 04:38:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-21 04:38:19,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:19,949 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] [2020-07-21 04:38:20,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:20,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:20,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:20,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1182289421, now seen corresponding path program 5 times [2020-07-21 04:38:20,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:20,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105238373] [2020-07-21 04:38:20,167 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 [2020-07-21 04:38:20,933 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:20,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:20,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 04:38:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:21,000 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 861 proven. 15 refuted. 0 times theorem prover too weak. 2177 trivial. 0 not checked. [2020-07-21 04:38:21,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:21,470 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:21,533 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 36 proven. 435 refuted. 0 times theorem prover too weak. 2582 trivial. 0 not checked. [2020-07-21 04:38:21,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105238373] [2020-07-21 04:38:21,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:21,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-07-21 04:38:21,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323307864] [2020-07-21 04:38:21,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 04:38:21,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:21,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 04:38:21,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-07-21 04:38:21,802 INFO L87 Difference]: Start difference. First operand 863 states and 1105 transitions. Second operand 19 states. [2020-07-21 04:38:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:22,192 INFO L93 Difference]: Finished difference Result 1719 states and 2205 transitions. [2020-07-21 04:38:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 04:38:22,192 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 264 [2020-07-21 04:38:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:22,204 INFO L225 Difference]: With dead ends: 1719 [2020-07-21 04:38:22,204 INFO L226 Difference]: Without dead ends: 867 [2020-07-21 04:38:22,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 507 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-07-21 04:38:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2020-07-21 04:38:22,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 864. [2020-07-21 04:38:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2020-07-21 04:38:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1106 transitions. [2020-07-21 04:38:22,257 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1106 transitions. Word has length 264 [2020-07-21 04:38:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:22,258 INFO L479 AbstractCegarLoop]: Abstraction has 864 states and 1106 transitions. [2020-07-21 04:38:22,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 04:38:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1106 transitions. [2020-07-21 04:38:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-21 04:38:22,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:22,265 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] [2020-07-21 04:38:22,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:22,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:22,481 INFO L82 PathProgramCache]: Analyzing trace with hash -981148631, now seen corresponding path program 6 times [2020-07-21 04:38:22,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:22,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717845579] [2020-07-21 04:38:22,482 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 [2020-07-21 04:38:23,117 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:23,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:23,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 04:38:23,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:23,210 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 973 proven. 21 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2020-07-21 04:38:23,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:23,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:23,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 41 proven. 528 refuted. 0 times theorem prover too weak. 2844 trivial. 0 not checked. [2020-07-21 04:38:24,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717845579] [2020-07-21 04:38:24,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:24,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2020-07-21 04:38:24,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439096635] [2020-07-21 04:38:24,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 04:38:24,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:24,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 04:38:24,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-07-21 04:38:24,002 INFO L87 Difference]: Start difference. First operand 864 states and 1106 transitions. Second operand 21 states. [2020-07-21 04:38:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:24,453 INFO L93 Difference]: Finished difference Result 1724 states and 2211 transitions. [2020-07-21 04:38:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 04:38:24,454 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 269 [2020-07-21 04:38:24,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:24,462 INFO L225 Difference]: With dead ends: 1724 [2020-07-21 04:38:24,463 INFO L226 Difference]: Without dead ends: 871 [2020-07-21 04:38:24,467 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 [2020-07-21 04:38:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-07-21 04:38:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 865. [2020-07-21 04:38:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-07-21 04:38:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1107 transitions. [2020-07-21 04:38:24,504 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1107 transitions. Word has length 269 [2020-07-21 04:38:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:24,505 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1107 transitions. [2020-07-21 04:38:24,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 04:38:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1107 transitions. [2020-07-21 04:38:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-21 04:38:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:24,510 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] [2020-07-21 04:38:24,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:24,725 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash -846645619, now seen corresponding path program 7 times [2020-07-21 04:38:24,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:24,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092061394] [2020-07-21 04:38:24,726 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 [2020-07-21 04:38:25,420 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 04:38:25,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:25,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 04:38:25,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:25,513 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 04:38:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3798 backedges. 1093 proven. 28 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2020-07-21 04:38:25,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:25,986 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 04:38:26,068 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 04:38:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3798 backedges. 46 proven. 630 refuted. 0 times theorem prover too weak. 3122 trivial. 0 not checked. [2020-07-21 04:38:26,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092061394] [2020-07-21 04:38:26,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:26,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2020-07-21 04:38:26,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601496345] [2020-07-21 04:38:26,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 04:38:26,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 04:38:26,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-07-21 04:38:26,370 INFO L87 Difference]: Start difference. First operand 865 states and 1107 transitions. Second operand 23 states. [2020-07-21 04:38:26,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:26,876 INFO L93 Difference]: Finished difference Result 1729 states and 2217 transitions. [2020-07-21 04:38:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 04:38:26,877 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 274 [2020-07-21 04:38:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:26,882 INFO L225 Difference]: With dead ends: 1729 [2020-07-21 04:38:26,882 INFO L226 Difference]: Without dead ends: 875 [2020-07-21 04:38:26,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 523 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=687, Unknown=0, NotChecked=0, Total=992 [2020-07-21 04:38:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-07-21 04:38:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 866. [2020-07-21 04:38:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-07-21 04:38:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1108 transitions. [2020-07-21 04:38:26,926 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1108 transitions. Word has length 274 [2020-07-21 04:38:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:26,927 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1108 transitions. [2020-07-21 04:38:26,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 04:38:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1108 transitions. [2020-07-21 04:38:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-21 04:38:26,932 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:26,932 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] [2020-07-21 04:38:27,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:27,147 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1932416599, now seen corresponding path program 8 times [2020-07-21 04:38:27,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:27,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404081132] [2020-07-21 04:38:27,149 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