/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 [2020-07-21 04:38:17,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 04:38:17,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 04:38:17,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 04:38:17,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 04:38:17,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 04:38:17,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 04:38:17,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 04:38:17,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 04:38:17,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 04:38:17,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 04:38:17,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 04:38:17,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 04:38:17,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 04:38:17,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 04:38:17,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 04:38:17,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 04:38:17,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 04:38:17,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 04:38:17,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 04:38:17,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 04:38:17,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 04:38:17,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 04:38:17,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 04:38:17,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 04:38:17,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 04:38:17,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 04:38:17,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 04:38:17,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 04:38:17,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 04:38:17,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 04:38:17,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 04:38:17,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 04:38:17,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 04:38:17,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 04:38:17,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 04:38:17,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 04:38:17,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 04:38:17,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 04:38:17,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 04:38:17,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 04:38:17,311 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 04:38:17,348 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 04:38:17,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 04:38:17,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 04:38:17,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 04:38:17,353 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 04:38:17,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 04:38:17,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 04:38:17,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 04:38:17,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 04:38:17,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 04:38:17,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 04:38:17,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 04:38:17,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 04:38:17,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 04:38:17,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 04:38:17,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 04:38:17,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 04:38:17,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 04:38:17,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 04:38:17,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 04:38:17,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 04:38:17,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 04:38:17,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 04:38:17,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:17,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 04:38:17,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 04:38:17,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-21 04:38:17,361 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 04:38:17,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 04:38:17,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 04:38:17,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 04:38:17,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 04:38:17,655 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 04:38:17,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-21 04:38:17,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf66e54f6/8a604cd3b0bf49bb8333050554ae913f/FLAG6cb600261 [2020-07-21 04:38:18,598 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 04:38:18,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-21 04:38:18,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf66e54f6/8a604cd3b0bf49bb8333050554ae913f/FLAG6cb600261 [2020-07-21 04:38:19,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf66e54f6/8a604cd3b0bf49bb8333050554ae913f [2020-07-21 04:38:19,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 04:38:19,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 04:38:19,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 04:38:19,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 04:38:19,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 04:38:19,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:38:19" (1/1) ... [2020-07-21 04:38:19,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4652122a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:19, skipping insertion in model container [2020-07-21 04:38:19,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:38:19" (1/1) ... [2020-07-21 04:38:19,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 04:38:19,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 04:38:20,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 04:38:20,848 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 04:38:21,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 04:38:21,182 INFO L208 MainTranslator]: Completed translation [2020-07-21 04:38:21,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21 WrapperNode [2020-07-21 04:38:21,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 04:38:21,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 04:38:21,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 04:38:21,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 04:38:21,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (1/1) ... [2020-07-21 04:38:21,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 04:38:21,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 04:38:21,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 04:38:21,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 04:38:21,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (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 04:38:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 04:38:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 04:38:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-07-21 04:38:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-07-21 04:38:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-07-21 04:38:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-07-21 04:38:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-07-21 04:38:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-07-21 04:38:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-07-21 04:38:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-07-21 04:38:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-07-21 04:38:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-07-21 04:38:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 04:38:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 04:38:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-07-21 04:38:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-07-21 04:38:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-07-21 04:38:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-07-21 04:38:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-07-21 04:38:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-07-21 04:38:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-07-21 04:38:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-07-21 04:38:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-07-21 04:38:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-07-21 04:38:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-07-21 04:38:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-07-21 04:38:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-07-21 04:38:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-07-21 04:38:21,488 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-07-21 04:38:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-07-21 04:38:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-07-21 04:38:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-07-21 04:38:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-07-21 04:38:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-07-21 04:38:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-07-21 04:38:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-07-21 04:38:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-07-21 04:38:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-07-21 04:38:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 04:38:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-07-21 04:38:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-07-21 04:38:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-07-21 04:38:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-07-21 04:38:21,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-07-21 04:38:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-07-21 04:38:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-07-21 04:38:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-07-21 04:38:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-21 04:38:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-21 04:38:21,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-21 04:38:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-21 04:38:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-21 04:38:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 04:38:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-07-21 04:38:21,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-07-21 04:38:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-07-21 04:38:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-07-21 04:38:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-07-21 04:38:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-07-21 04:38:21,494 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-07-21 04:38:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-07-21 04:38:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-07-21 04:38:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 04:38:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-07-21 04:38:21,495 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-07-21 04:38:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-07-21 04:38:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-07-21 04:38:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-07-21 04:38:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-07-21 04:38:21,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-21 04:38:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-21 04:38:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-21 04:38:21,497 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-07-21 04:38:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 04:38:21,497 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-07-21 04:38:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-21 04:38:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-21 04:38:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-07-21 04:38:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-07-21 04:38:21,498 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-07-21 04:38:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-07-21 04:38:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-07-21 04:38:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-07-21 04:38:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-07-21 04:38:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-07-21 04:38:21,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-07-21 04:38:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-07-21 04:38:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-07-21 04:38:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-07-21 04:38:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-21 04:38:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 04:38:21,500 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-07-21 04:38:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-07-21 04:38:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-07-21 04:38:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-07-21 04:38:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 04:38:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 04:38:21,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 04:38:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-21 04:38:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 04:38:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 04:38:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 04:38:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-21 04:38:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-07-21 04:38:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-07-21 04:38:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-21 04:38:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-07-21 04:38:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-07-21 04:38:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-07-21 04:38:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-07-21 04:38:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-07-21 04:38:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-07-21 04:38:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-07-21 04:38:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-07-21 04:38:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-07-21 04:38:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-07-21 04:38:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-07-21 04:38:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-07-21 04:38:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-07-21 04:38:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-07-21 04:38:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-07-21 04:38:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-07-21 04:38:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-07-21 04:38:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-07-21 04:38:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-07-21 04:38:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-07-21 04:38:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-07-21 04:38:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-07-21 04:38:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-07-21 04:38:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-07-21 04:38:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-07-21 04:38:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-07-21 04:38:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-07-21 04:38:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-07-21 04:38:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-07-21 04:38:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-07-21 04:38:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-07-21 04:38:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 04:38:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 04:38:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 04:38:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 04:38:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 04:38:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 04:38:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-07-21 04:38:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-07-21 04:38:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-07-21 04:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 04:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 04:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 04:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-07-21 04:38:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-07-21 04:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-07-21 04:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-07-21 04:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-07-21 04:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-21 04:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-21 04:38:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-21 04:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-21 04:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-21 04:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 04:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 04:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 04:38:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 04:38:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-07-21 04:38:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-07-21 04:38:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-21 04:38:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-07-21 04:38:22,322 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-07-21 04:38:22,328 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-21 04:38:25,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 04:38:25,562 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 04:38:25,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:38:25 BoogieIcfgContainer [2020-07-21 04:38:25,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 04:38:25,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 04:38:25,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 04:38:25,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 04:38:25,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:38:19" (1/3) ... [2020-07-21 04:38:25,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b429171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:38:25, skipping insertion in model container [2020-07-21 04:38:25,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:38:21" (2/3) ... [2020-07-21 04:38:25,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b429171 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:38:25, skipping insertion in model container [2020-07-21 04:38:25,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:38:25" (3/3) ... [2020-07-21 04:38:25,580 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-21 04:38:25,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 04:38:25,603 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 04:38:25,619 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 04:38:25,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 04:38:25,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 04:38:25,651 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 04:38:25,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 04:38:25,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 04:38:25,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 04:38:25,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 04:38:25,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 04:38:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-07-21 04:38:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 04:38:25,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:25,696 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] [2020-07-21 04:38:25,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:25,703 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-07-21 04:38:25,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:25,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194262294] [2020-07-21 04:38:25,715 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 04:38:33,756 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 04:38:33,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 04:38:33,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:33,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 04:38:33,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194262294] [2020-07-21 04:38:33,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 04:38:33,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 04:38:33,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437377504] [2020-07-21 04:38:33,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 04:38:33,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:33,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 04:38:33,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 04:38:33,935 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 3 states. [2020-07-21 04:38:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:34,215 INFO L93 Difference]: Finished difference Result 1133 states and 1613 transitions. [2020-07-21 04:38:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 04:38:34,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-21 04:38:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:34,247 INFO L225 Difference]: With dead ends: 1133 [2020-07-21 04:38:34,247 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 04:38:34,274 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 [2020-07-21 04:38:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 04:38:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 04:38:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 04:38:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 814 transitions. [2020-07-21 04:38:34,436 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 814 transitions. Word has length 26 [2020-07-21 04:38:34,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:34,437 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 814 transitions. [2020-07-21 04:38:34,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 04:38:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 814 transitions. [2020-07-21 04:38:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 04:38:34,447 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:34,448 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] [2020-07-21 04:38:34,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:34,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-07-21 04:38:34,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:34,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587949947] [2020-07-21 04:38:34,652 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 04:38:37,379 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 04:38:37,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:37,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 04:38:37,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:37,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 04:38:37,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587949947] [2020-07-21 04:38:37,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 04:38:37,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 04:38:37,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758588424] [2020-07-21 04:38:37,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 04:38:37,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 04:38:37,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 04:38:37,453 INFO L87 Difference]: Start difference. First operand 590 states and 814 transitions. Second operand 5 states. [2020-07-21 04:38:40,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:40,924 INFO L93 Difference]: Finished difference Result 1170 states and 1619 transitions. [2020-07-21 04:38:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 04:38:40,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-21 04:38:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:40,929 INFO L225 Difference]: With dead ends: 1170 [2020-07-21 04:38:40,929 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 04:38:40,932 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 [2020-07-21 04:38:40,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 04:38:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 04:38:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 04:38:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 813 transitions. [2020-07-21 04:38:40,966 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 813 transitions. Word has length 38 [2020-07-21 04:38:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:40,967 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 813 transitions. [2020-07-21 04:38:40,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 04:38:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 813 transitions. [2020-07-21 04:38:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 04:38:40,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:40,969 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] [2020-07-21 04:38:41,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:41,170 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash -249601707, now seen corresponding path program 1 times [2020-07-21 04:38:41,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:41,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601732624] [2020-07-21 04:38:41,173 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 04:38:47,035 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 04:38:47,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 04:38:47,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:47,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 04:38:47,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601732624] [2020-07-21 04:38:47,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 04:38:47,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 04:38:47,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139156333] [2020-07-21 04:38:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 04:38:47,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:47,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 04:38:47,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 04:38:47,132 INFO L87 Difference]: Start difference. First operand 590 states and 813 transitions. Second operand 3 states. [2020-07-21 04:38:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:47,198 INFO L93 Difference]: Finished difference Result 1170 states and 1618 transitions. [2020-07-21 04:38:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 04:38:47,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-21 04:38:47,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:47,208 INFO L225 Difference]: With dead ends: 1170 [2020-07-21 04:38:47,208 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 04:38:47,217 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 [2020-07-21 04:38:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 04:38:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 04:38:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 04:38:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-07-21 04:38:47,270 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 38 [2020-07-21 04:38:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:47,271 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-07-21 04:38:47,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 04:38:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-07-21 04:38:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 04:38:47,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:47,273 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] [2020-07-21 04:38:47,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:47,487 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:47,488 INFO L82 PathProgramCache]: Analyzing trace with hash 148075995, now seen corresponding path program 1 times [2020-07-21 04:38:47,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:47,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278617075] [2020-07-21 04:38:47,489 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 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 04:38:49,081 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 04:38:49,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:49,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 04:38:49,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:49,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 04:38:49,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278617075] [2020-07-21 04:38:49,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 04:38:49,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 04:38:49,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619375308] [2020-07-21 04:38:49,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 04:38:49,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:49,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 04:38:49,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 04:38:49,127 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 3 states. [2020-07-21 04:38:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:49,177 INFO L93 Difference]: Finished difference Result 1172 states and 1619 transitions. [2020-07-21 04:38:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 04:38:49,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-21 04:38:49,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:49,182 INFO L225 Difference]: With dead ends: 1172 [2020-07-21 04:38:49,182 INFO L226 Difference]: Without dead ends: 592 [2020-07-21 04:38:49,185 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 [2020-07-21 04:38:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-07-21 04:38:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2020-07-21 04:38:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-07-21 04:38:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 814 transitions. [2020-07-21 04:38:49,216 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 814 transitions. Word has length 60 [2020-07-21 04:38:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:49,216 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 814 transitions. [2020-07-21 04:38:49,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 04:38:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 814 transitions. [2020-07-21 04:38:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-21 04:38:49,218 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:49,218 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] [2020-07-21 04:38:49,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:49,422 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-07-21 04:38:49,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:49,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990046289] [2020-07-21 04:38:49,423 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 04:38:51,126 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 04:38:51,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:51,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 04:38:51,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:51,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:51,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990046289] [2020-07-21 04:38:51,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:51,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 04:38:51,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45815405] [2020-07-21 04:38:51,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 04:38:51,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 04:38:51,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 04:38:51,325 INFO L87 Difference]: Start difference. First operand 592 states and 814 transitions. Second operand 6 states. [2020-07-21 04:38:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:38:51,410 INFO L93 Difference]: Finished difference Result 1180 states and 1629 transitions. [2020-07-21 04:38:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 04:38:51,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-07-21 04:38:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:38:51,416 INFO L225 Difference]: With dead ends: 1180 [2020-07-21 04:38:51,416 INFO L226 Difference]: Without dead ends: 598 [2020-07-21 04:38:51,419 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 [2020-07-21 04:38:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-07-21 04:38:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-07-21 04:38:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-07-21 04:38:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 820 transitions. [2020-07-21 04:38:51,449 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 820 transitions. Word has length 62 [2020-07-21 04:38:51,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:38:51,450 INFO L479 AbstractCegarLoop]: Abstraction has 598 states and 820 transitions. [2020-07-21 04:38:51,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 04:38:51,450 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 820 transitions. [2020-07-21 04:38:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-21 04:38:51,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:38:51,452 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] [2020-07-21 04:38:51,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:38:51,668 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:38:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:38:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1404324807, now seen corresponding path program 2 times [2020-07-21 04:38:51,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:38:51,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041216685] [2020-07-21 04:38:51,669 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 04:38:53,603 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 04:38:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:38:53,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 04:38:53,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:38:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:53,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:38:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:38:55,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041216685] [2020-07-21 04:38:55,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:38:55,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-21 04:38:55,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879930406] [2020-07-21 04:38:55,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 04:38:55,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:38:55,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 04:38:55,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=85, Unknown=1, NotChecked=0, Total=132 [2020-07-21 04:38:55,969 INFO L87 Difference]: Start difference. First operand 598 states and 820 transitions. Second operand 12 states. [2020-07-21 04:38:57,862 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-07-21 04:39:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:39:00,313 INFO L93 Difference]: Finished difference Result 1198 states and 1650 transitions. [2020-07-21 04:39:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 04:39:00,314 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-07-21 04:39:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:39:00,318 INFO L225 Difference]: With dead ends: 1198 [2020-07-21 04:39:00,319 INFO L226 Difference]: Without dead ends: 610 [2020-07-21 04:39:00,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=94, Invalid=144, Unknown=2, NotChecked=0, Total=240 [2020-07-21 04:39:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-07-21 04:39:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-07-21 04:39:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-07-21 04:39:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 832 transitions. [2020-07-21 04:39:00,355 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 832 transitions. Word has length 68 [2020-07-21 04:39:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:39:00,355 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 832 transitions. [2020-07-21 04:39:00,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 04:39:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 832 transitions. [2020-07-21 04:39:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 04:39:00,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:39:00,358 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] [2020-07-21 04:39:00,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:39:00,571 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:39:00,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:39:00,572 INFO L82 PathProgramCache]: Analyzing trace with hash -54277591, now seen corresponding path program 3 times [2020-07-21 04:39:00,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:39:00,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085888344] [2020-07-21 04:39:00,574 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 04:39:19,444 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 04:39:19,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:39:19,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 04:39:19,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:39:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:39:19,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:39:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:39:24,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085888344] [2020-07-21 04:39:24,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:39:24,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-07-21 04:39:24,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910500067] [2020-07-21 04:39:24,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 04:39:24,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:39:24,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 04:39:24,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=384, Unknown=2, NotChecked=0, Total=552 [2020-07-21 04:39:24,653 INFO L87 Difference]: Start difference. First operand 610 states and 832 transitions. Second operand 24 states. [2020-07-21 04:39:27,209 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 56 DAG size of output: 11 [2020-07-21 04:39:27,929 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-07-21 04:39:29,414 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 11 [2020-07-21 04:39:30,319 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-21 04:39:32,689 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-21 04:39:37,142 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 31 DAG size of output: 11 [2020-07-21 04:39:37,823 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-07-21 04:39:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:39:50,870 INFO L93 Difference]: Finished difference Result 1234 states and 1692 transitions. [2020-07-21 04:39:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 04:39:50,870 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-07-21 04:39:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:39:50,875 INFO L225 Difference]: With dead ends: 1234 [2020-07-21 04:39:50,875 INFO L226 Difference]: Without dead ends: 634 [2020-07-21 04:39:50,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=405, Invalid=711, Unknown=6, NotChecked=0, Total=1122 [2020-07-21 04:39:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-07-21 04:39:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-07-21 04:39:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-07-21 04:39:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 856 transitions. [2020-07-21 04:39:50,920 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 856 transitions. Word has length 80 [2020-07-21 04:39:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:39:50,922 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 856 transitions. [2020-07-21 04:39:50,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 04:39:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 856 transitions. [2020-07-21 04:39:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-21 04:39:50,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:39:50,925 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] [2020-07-21 04:39:51,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:39:51,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:39:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:39:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash -551436819, now seen corresponding path program 4 times [2020-07-21 04:39:51,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:39:51,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489773748] [2020-07-21 04:39:51,140 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 04:40:54,653 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 04:40:54,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 04:40:56,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 04:40:56,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 04:40:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:40:57,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 04:41:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 500 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 04:41:35,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489773748] [2020-07-21 04:41:35,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 04:41:35,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2020-07-21 04:41:35,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728824617] [2020-07-21 04:41:35,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-21 04:41:35,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 04:41:35,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-21 04:41:35,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=1721, Unknown=18, NotChecked=0, Total=2256 [2020-07-21 04:41:35,882 INFO L87 Difference]: Start difference. First operand 634 states and 856 transitions. Second operand 48 states. [2020-07-21 04:41:37,629 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-21 04:41:38,498 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-21 04:41:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 04:41:52,885 INFO L93 Difference]: Finished difference Result 1276 states and 1731 transitions. [2020-07-21 04:41:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-21 04:41:52,887 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 104 [2020-07-21 04:41:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 04:41:52,898 INFO L225 Difference]: With dead ends: 1276 [2020-07-21 04:41:52,898 INFO L226 Difference]: Without dead ends: 652 [2020-07-21 04:41:52,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 55.3s TimeCoverageRelationStatistics Valid=748, Invalid=2199, Unknown=23, NotChecked=0, Total=2970 [2020-07-21 04:41:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-07-21 04:41:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2020-07-21 04:41:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-07-21 04:41:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 874 transitions. [2020-07-21 04:41:52,935 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 874 transitions. Word has length 104 [2020-07-21 04:41:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 04:41:52,935 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 874 transitions. [2020-07-21 04:41:52,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-21 04:41:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 874 transitions. [2020-07-21 04:41:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-21 04:41:52,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 04:41:52,942 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] [2020-07-21 04:41:53,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 04:41:53,156 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 04:41:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 04:41:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash 946472160, now seen corresponding path program 5 times [2020-07-21 04:41:53,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 04:41:53,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564279216] [2020-07-21 04:41:53,157 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