/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--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-22 02:06:55,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-22 02:06:55,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-22 02:06:55,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-22 02:06:55,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-22 02:06:55,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-22 02:06:55,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-22 02:06:55,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-22 02:06:55,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-22 02:06:55,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-22 02:06:55,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-22 02:06:55,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-22 02:06:55,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-22 02:06:55,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-22 02:06:55,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-22 02:06:55,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-22 02:06:55,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-22 02:06:55,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-22 02:06:55,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-22 02:06:55,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-22 02:06:55,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-22 02:06:55,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-22 02:06:55,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-22 02:06:55,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-22 02:06:55,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-22 02:06:55,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-22 02:06:55,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-22 02:06:55,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-22 02:06:55,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-22 02:06:55,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-22 02:06:55,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-22 02:06:55,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-22 02:06:55,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-22 02:06:55,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-22 02:06:55,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-22 02:06:55,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-22 02:06:55,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-22 02:06:55,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-22 02:06:55,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-22 02:06:55,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-22 02:06:55,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-22 02:06:55,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-07-22 02:06:55,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-22 02:06:55,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-22 02:06:55,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-22 02:06:55,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-22 02:06:55,553 INFO L138 SettingsManager]: * Use SBE=true [2020-07-22 02:06:55,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-22 02:06:55,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-22 02:06:55,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-22 02:06:55,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-22 02:06:55,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-22 02:06:55,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-22 02:06:55,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-22 02:06:55,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-22 02:06:55,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-22 02:06:55,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-22 02:06:55,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-22 02:06:55,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-22 02:06:55,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-22 02:06:55,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-22 02:06:55,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-22 02:06:55,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-22 02:06:55,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-22 02:06:55,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-22 02:06:55,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:06:55,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-22 02:06:55,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-22 02:06:55,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-22 02:06:55,557 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-22 02:06:55,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-22 02:06:55,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-22 02:06:55,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-22 02:06:55,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-22 02:06:55,864 INFO L275 PluginConnector]: CDTParser initialized [2020-07-22 02:06:55,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-22 02:06:55,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88bd11f5/e60cc1b83b5542c29837a11434d62962/FLAGb2c6c8a75 [2020-07-22 02:06:56,792 INFO L306 CDTParser]: Found 1 translation units. [2020-07-22 02:06:56,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-22 02:06:56,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88bd11f5/e60cc1b83b5542c29837a11434d62962/FLAGb2c6c8a75 [2020-07-22 02:06:57,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88bd11f5/e60cc1b83b5542c29837a11434d62962 [2020-07-22 02:06:57,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-22 02:06:57,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-22 02:06:57,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-22 02:06:57,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-22 02:06:57,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-22 02:06:57,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:06:57" (1/1) ... [2020-07-22 02:06:57,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31aed35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:57, skipping insertion in model container [2020-07-22 02:06:57,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:06:57" (1/1) ... [2020-07-22 02:06:57,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-22 02:06:57,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-22 02:06:59,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-22 02:06:59,081 INFO L203 MainTranslator]: Completed pre-run [2020-07-22 02:06:59,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-22 02:06:59,534 INFO L208 MainTranslator]: Completed translation [2020-07-22 02:06:59,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59 WrapperNode [2020-07-22 02:06:59,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-22 02:06:59,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-22 02:06:59,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-22 02:06:59,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-22 02:06:59,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (1/1) ... [2020-07-22 02:06:59,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-22 02:06:59,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-22 02:06:59,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-22 02:06:59,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-22 02:06:59,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (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 [2020-07-22 02:06:59,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-22 02:06:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-22 02:06:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-07-22 02:06:59,856 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-07-22 02:06:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-07-22 02:06:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-07-22 02:06:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-07-22 02:06:59,857 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-07-22 02:06:59,858 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-07-22 02:06:59,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-07-22 02:06:59,858 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-07-22 02:06:59,858 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-07-22 02:06:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-22 02:06:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-22 02:06:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-07-22 02:06:59,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-07-22 02:06:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-07-22 02:06:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-07-22 02:06:59,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-07-22 02:06:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-07-22 02:06:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-07-22 02:06:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-07-22 02:06:59,861 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-07-22 02:06:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-07-22 02:06:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-07-22 02:06:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-07-22 02:06:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-07-22 02:06:59,862 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-07-22 02:06:59,863 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-07-22 02:06:59,863 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-07-22 02:06:59,863 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-07-22 02:06:59,863 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-07-22 02:06:59,863 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-07-22 02:06:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-07-22 02:06:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-07-22 02:06:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-07-22 02:06:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-07-22 02:06:59,864 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-07-22 02:06:59,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-22 02:06:59,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-07-22 02:06:59,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-07-22 02:06:59,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-07-22 02:06:59,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-07-22 02:06:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-07-22 02:06:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-07-22 02:06:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-07-22 02:06:59,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-07-22 02:06:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-22 02:06:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-22 02:06:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-22 02:06:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-22 02:06:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-22 02:06:59,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-22 02:06:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-07-22 02:06:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-07-22 02:06:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-07-22 02:06:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-07-22 02:06:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-07-22 02:06:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-07-22 02:06:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-07-22 02:06:59,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-07-22 02:06:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-07-22 02:06:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-22 02:06:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-07-22 02:06:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-07-22 02:06:59,870 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-07-22 02:06:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-07-22 02:06:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-07-22 02:06:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-07-22 02:06:59,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-22 02:06:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-22 02:06:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-22 02:06:59,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-07-22 02:06:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-22 02:06:59,872 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-07-22 02:06:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-22 02:06:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-22 02:06:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-07-22 02:06:59,873 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-07-22 02:06:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-07-22 02:06:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-07-22 02:06:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-07-22 02:06:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-07-22 02:06:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-07-22 02:06:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-07-22 02:06:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-07-22 02:06:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-07-22 02:06:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-07-22 02:06:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-07-22 02:06:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-22 02:06:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-22 02:06:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-07-22 02:06:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-07-22 02:06:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-07-22 02:06:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-07-22 02:06:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-22 02:06:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-22 02:06:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-22 02:06:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-22 02:06:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-22 02:06:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-22 02:06:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-22 02:06:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-22 02:06:59,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-07-22 02:06:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-07-22 02:06:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-22 02:06:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-07-22 02:06:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-07-22 02:06:59,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-07-22 02:06:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-07-22 02:06:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-07-22 02:06:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-07-22 02:06:59,880 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-07-22 02:06:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-07-22 02:06:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-07-22 02:06:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-07-22 02:06:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-07-22 02:06:59,881 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-07-22 02:06:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-07-22 02:06:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-07-22 02:06:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-07-22 02:06:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-07-22 02:06:59,882 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-07-22 02:06:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-07-22 02:06:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-07-22 02:06:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-07-22 02:06:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-07-22 02:06:59,883 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-07-22 02:06:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-07-22 02:06:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-07-22 02:06:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-07-22 02:06:59,884 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-07-22 02:06:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-07-22 02:06:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-07-22 02:06:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-07-22 02:06:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-07-22 02:06:59,885 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-07-22 02:06:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-22 02:06:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-22 02:06:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-22 02:06:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-22 02:06:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-22 02:06:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-22 02:06:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-07-22 02:06:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-07-22 02:06:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-07-22 02:06:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-22 02:06:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-22 02:06:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-22 02:06:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-07-22 02:06:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-07-22 02:06:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-07-22 02:06:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-07-22 02:06:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-07-22 02:06:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-22 02:06:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-22 02:06:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-22 02:06:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-22 02:06:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-22 02:06:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-22 02:06:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-22 02:06:59,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-22 02:06:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-22 02:06:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-07-22 02:06:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-07-22 02:06:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-22 02:06:59,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-07-22 02:07:00,812 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-07-22 02:07:00,818 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-22 02:07:03,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-22 02:07:03,505 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-22 02:07:03,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:03 BoogieIcfgContainer [2020-07-22 02:07:03,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-22 02:07:03,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-22 02:07:03,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-22 02:07:03,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-22 02:07:03,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:06:57" (1/3) ... [2020-07-22 02:07:03,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be2ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:07:03, skipping insertion in model container [2020-07-22 02:07:03,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:06:59" (2/3) ... [2020-07-22 02:07:03,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be2ad02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:07:03, skipping insertion in model container [2020-07-22 02:07:03,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:07:03" (3/3) ... [2020-07-22 02:07:03,522 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-22 02:07:03,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-22 02:07:03,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-22 02:07:03,557 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-22 02:07:03,587 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-22 02:07:03,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-22 02:07:03,587 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-22 02:07:03,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-22 02:07:03,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-22 02:07:03,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-22 02:07:03,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-22 02:07:03,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-22 02:07:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-07-22 02:07:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-22 02:07:03,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:03,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:07:03,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:03,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-07-22 02:07:03,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:03,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517600743] [2020-07-22 02:07:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:11,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-22 02:07:11,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:11,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-22 02:07:11,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:11,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 02:07:11,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517600743] [2020-07-22 02:07:11,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 02:07:11,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-22 02:07:11,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731144186] [2020-07-22 02:07:11,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-22 02:07:11,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:11,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-22 02:07:11,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 02:07:11,304 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 3 states. [2020-07-22 02:07:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:11,517 INFO L93 Difference]: Finished difference Result 1133 states and 1613 transitions. [2020-07-22 02:07:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-22 02:07:11,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-22 02:07:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:11,540 INFO L225 Difference]: With dead ends: 1133 [2020-07-22 02:07:11,540 INFO L226 Difference]: Without dead ends: 590 [2020-07-22 02:07:11,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 02:07:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-22 02:07:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-22 02:07:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-22 02:07:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 814 transitions. [2020-07-22 02:07:11,659 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 814 transitions. Word has length 26 [2020-07-22 02:07:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:11,659 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 814 transitions. [2020-07-22 02:07:11,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-22 02:07:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 814 transitions. [2020-07-22 02:07:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-22 02:07:11,663 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:11,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:07:11,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:11,879 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:11,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:11,879 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-07-22 02:07:11,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:11,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304999290] [2020-07-22 02:07:11,880 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:14,562 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-22 02:07:14,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:14,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-22 02:07:14,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:14,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 02:07:14,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304999290] [2020-07-22 02:07:14,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 02:07:14,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-22 02:07:14,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114142453] [2020-07-22 02:07:14,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-22 02:07:14,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:14,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-22 02:07:14,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-22 02:07:14,643 INFO L87 Difference]: Start difference. First operand 590 states and 814 transitions. Second operand 5 states. [2020-07-22 02:07:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:18,218 INFO L93 Difference]: Finished difference Result 1170 states and 1619 transitions. [2020-07-22 02:07:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-22 02:07:18,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-22 02:07:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:18,224 INFO L225 Difference]: With dead ends: 1170 [2020-07-22 02:07:18,225 INFO L226 Difference]: Without dead ends: 590 [2020-07-22 02:07:18,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-22 02:07:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-22 02:07:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-22 02:07:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-22 02:07:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 813 transitions. [2020-07-22 02:07:18,269 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 813 transitions. Word has length 38 [2020-07-22 02:07:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:18,270 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 813 transitions. [2020-07-22 02:07:18,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-22 02:07:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 813 transitions. [2020-07-22 02:07:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-22 02:07:18,272 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:18,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:07:18,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:18,486 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:18,487 INFO L82 PathProgramCache]: Analyzing trace with hash -249601707, now seen corresponding path program 1 times [2020-07-22 02:07:18,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:18,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648316416] [2020-07-22 02:07:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:24,033 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-22 02:07:24,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:24,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-22 02:07:24,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:24,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 02:07:24,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648316416] [2020-07-22 02:07:24,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 02:07:24,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-22 02:07:24,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672440968] [2020-07-22 02:07:24,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-22 02:07:24,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:24,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-22 02:07:24,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 02:07:24,108 INFO L87 Difference]: Start difference. First operand 590 states and 813 transitions. Second operand 3 states. [2020-07-22 02:07:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:24,145 INFO L93 Difference]: Finished difference Result 1170 states and 1618 transitions. [2020-07-22 02:07:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-22 02:07:24,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-22 02:07:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:24,150 INFO L225 Difference]: With dead ends: 1170 [2020-07-22 02:07:24,151 INFO L226 Difference]: Without dead ends: 590 [2020-07-22 02:07:24,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 02:07:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-22 02:07:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-22 02:07:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-22 02:07:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-07-22 02:07:24,188 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 38 [2020-07-22 02:07:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:24,188 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-07-22 02:07:24,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-22 02:07:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-07-22 02:07:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-22 02:07:24,191 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:24,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:07:24,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:24,393 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:24,393 INFO L82 PathProgramCache]: Analyzing trace with hash 148075995, now seen corresponding path program 1 times [2020-07-22 02:07:24,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:24,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593532019] [2020-07-22 02:07:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:25,931 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-22 02:07:25,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:25,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-22 02:07:25,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:25,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-22 02:07:25,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593532019] [2020-07-22 02:07:25,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-22 02:07:25,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-22 02:07:25,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325552680] [2020-07-22 02:07:25,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-22 02:07:25,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-22 02:07:25,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 02:07:25,966 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 3 states. [2020-07-22 02:07:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:26,009 INFO L93 Difference]: Finished difference Result 1172 states and 1619 transitions. [2020-07-22 02:07:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-22 02:07:26,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-22 02:07:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:26,014 INFO L225 Difference]: With dead ends: 1172 [2020-07-22 02:07:26,014 INFO L226 Difference]: Without dead ends: 592 [2020-07-22 02:07:26,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-22 02:07:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-07-22 02:07:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2020-07-22 02:07:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-07-22 02:07:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 814 transitions. [2020-07-22 02:07:26,048 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 814 transitions. Word has length 60 [2020-07-22 02:07:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:26,049 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 814 transitions. [2020-07-22 02:07:26,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-22 02:07:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 814 transitions. [2020-07-22 02:07:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-22 02:07:26,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:26,052 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-22 02:07:26,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:26,265 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:26,266 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-07-22 02:07:26,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:26,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36074773] [2020-07-22 02:07:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:27,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-22 02:07:27,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:27,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-22 02:07:27,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:27,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:07:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:28,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36074773] [2020-07-22 02:07:28,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:07:28,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-22 02:07:28,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131136926] [2020-07-22 02:07:28,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-22 02:07:28,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:28,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-22 02:07:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-22 02:07:28,086 INFO L87 Difference]: Start difference. First operand 592 states and 814 transitions. Second operand 6 states. [2020-07-22 02:07:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:28,210 INFO L93 Difference]: Finished difference Result 1180 states and 1629 transitions. [2020-07-22 02:07:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-22 02:07:28,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-07-22 02:07:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:28,218 INFO L225 Difference]: With dead ends: 1180 [2020-07-22 02:07:28,218 INFO L226 Difference]: Without dead ends: 598 [2020-07-22 02:07:28,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-22 02:07:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-07-22 02:07:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-07-22 02:07:28,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-07-22 02:07:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 820 transitions. [2020-07-22 02:07:28,265 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 820 transitions. Word has length 62 [2020-07-22 02:07:28,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:28,270 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 820 transitions. [2020-07-22 02:07:28,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-22 02:07:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 820 transitions. [2020-07-22 02:07:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-22 02:07:28,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:28,273 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:07:28,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:28,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:28,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1404324807, now seen corresponding path program 2 times [2020-07-22 02:07:28,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:28,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057284957] [2020-07-22 02:07:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:30,369 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-22 02:07:30,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:30,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-22 02:07:30,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:30,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:07:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:32,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057284957] [2020-07-22 02:07:32,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:07:32,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-22 02:07:32,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129069622] [2020-07-22 02:07:32,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-22 02:07:32,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:32,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-22 02:07:32,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=85, Unknown=1, NotChecked=0, Total=132 [2020-07-22 02:07:32,688 INFO L87 Difference]: Start difference. First operand 598 states and 820 transitions. Second operand 12 states. [2020-07-22 02:07:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:07:35,170 INFO L93 Difference]: Finished difference Result 1198 states and 1650 transitions. [2020-07-22 02:07:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-22 02:07:35,171 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-07-22 02:07:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:07:35,177 INFO L225 Difference]: With dead ends: 1198 [2020-07-22 02:07:35,177 INFO L226 Difference]: Without dead ends: 610 [2020-07-22 02:07:35,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=94, Invalid=144, Unknown=2, NotChecked=0, Total=240 [2020-07-22 02:07:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-07-22 02:07:35,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-07-22 02:07:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-07-22 02:07:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 832 transitions. [2020-07-22 02:07:35,208 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 832 transitions. Word has length 68 [2020-07-22 02:07:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:07:35,210 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 832 transitions. [2020-07-22 02:07:35,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-22 02:07:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 832 transitions. [2020-07-22 02:07:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-22 02:07:35,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:07:35,212 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:07:35,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:35,426 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:07:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:07:35,426 INFO L82 PathProgramCache]: Analyzing trace with hash -54277591, now seen corresponding path program 3 times [2020-07-22 02:07:35,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:07:35,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075174652] [2020-07-22 02:07:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:07:55,834 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-22 02:07:55,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:07:56,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-22 02:07:56,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:07:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:56,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:07:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:07:56,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075174652] [2020-07-22 02:07:56,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:07:56,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-07-22 02:07:56,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817947815] [2020-07-22 02:07:56,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-22 02:07:56,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:07:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-22 02:07:56,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2020-07-22 02:07:56,849 INFO L87 Difference]: Start difference. First operand 610 states and 832 transitions. Second operand 24 states. [2020-07-22 02:07:57,494 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 11 [2020-07-22 02:07:57,939 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-07-22 02:08:00,749 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 46 DAG size of output: 11 [2020-07-22 02:08:03,301 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-22 02:08:03,891 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-22 02:08:06,500 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 11 [2020-07-22 02:08:07,987 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-07-22 02:08:12,379 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2020-07-22 02:08:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:08:14,777 INFO L93 Difference]: Finished difference Result 1234 states and 1692 transitions. [2020-07-22 02:08:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-22 02:08:14,778 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-07-22 02:08:14,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:08:14,782 INFO L225 Difference]: With dead ends: 1234 [2020-07-22 02:08:14,783 INFO L226 Difference]: Without dead ends: 634 [2020-07-22 02:08:14,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=406, Invalid=715, Unknown=1, NotChecked=0, Total=1122 [2020-07-22 02:08:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-07-22 02:08:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-07-22 02:08:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-07-22 02:08:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 856 transitions. [2020-07-22 02:08:14,822 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 856 transitions. Word has length 80 [2020-07-22 02:08:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:08:14,827 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 856 transitions. [2020-07-22 02:08:14,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-22 02:08:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 856 transitions. [2020-07-22 02:08:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-22 02:08:14,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:08:14,833 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:08:15,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:08:15,046 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:08:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:08:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -551436819, now seen corresponding path program 4 times [2020-07-22 02:08:15,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:08:15,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260787933] [2020-07-22 02:08:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:10:33,096 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-22 02:10:33,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-22 02:10:38,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-22 02:10:38,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-22 02:10:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:10:39,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-22 02:11:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 502 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-22 02:11:09,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260787933] [2020-07-22 02:11:09,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-22 02:11:09,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2020-07-22 02:11:09,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292403445] [2020-07-22 02:11:09,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-22 02:11:09,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-22 02:11:09,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-22 02:11:09,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=1725, Unknown=14, NotChecked=0, Total=2256 [2020-07-22 02:11:09,440 INFO L87 Difference]: Start difference. First operand 634 states and 856 transitions. Second operand 48 states. [2020-07-22 02:11:13,451 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-22 02:11:14,697 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-22 02:11:15,201 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 11 [2020-07-22 02:11:28,680 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 16 [2020-07-22 02:11:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-22 02:11:28,898 INFO L93 Difference]: Finished difference Result 1276 states and 1731 transitions. [2020-07-22 02:11:28,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-22 02:11:28,899 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 104 [2020-07-22 02:11:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-22 02:11:28,903 INFO L225 Difference]: With dead ends: 1276 [2020-07-22 02:11:28,904 INFO L226 Difference]: Without dead ends: 652 [2020-07-22 02:11:28,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=747, Invalid=2205, Unknown=18, NotChecked=0, Total=2970 [2020-07-22 02:11:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-07-22 02:11:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2020-07-22 02:11:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-07-22 02:11:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 874 transitions. [2020-07-22 02:11:28,933 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 874 transitions. Word has length 104 [2020-07-22 02:11:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-22 02:11:28,934 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 874 transitions. [2020-07-22 02:11:28,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-22 02:11:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 874 transitions. [2020-07-22 02:11:28,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-22 02:11:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-07-22 02:11:28,936 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-22 02:11:29,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-22 02:11:29,150 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-22 02:11:29,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-22 02:11:29,151 INFO L82 PathProgramCache]: Analyzing trace with hash 946472160, now seen corresponding path program 5 times [2020-07-22 02:11:29,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-22 02:11:29,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154679680] [2020-07-22 02:11:29,152 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