/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 DAGSIZE --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 00:09:48,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:09:48,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:09:48,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:09:48,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:09:48,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:09:48,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:09:48,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:09:48,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:09:48,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:09:48,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:09:48,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:09:48,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:09:48,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:09:48,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:09:48,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:09:48,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:09:48,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:09:48,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:09:48,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:09:48,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:09:48,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:09:48,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:09:48,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:09:49,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 00:09:49,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 00:09:49,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 00:09:49,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 00:09:49,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 00:09:49,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 00:09:49,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 00:09:49,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 00:09:49,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 00:09:49,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 00:09:49,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 00:09:49,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 00:09:49,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 00:09:49,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 00:09:49,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:09:49,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:09:49,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:09:49,014 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 00:09:49,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:09:49,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:09:49,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:09:49,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:09:49,057 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:09:49,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:09:49,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:09:49,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:09:49,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:09:49,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:09:49,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:09:49,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:09:49,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:09:49,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:09:49,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:09:49,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:09:49,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:09:49,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:09:49,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:09:49,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:09:49,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:09:49,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:09:49,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:09:49,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:09:49,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:09:49,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:09:49,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-21 00:09:49,062 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 -> DAGSIZE 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 00:09:49,387 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:09:49,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:09:49,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:09:49,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:09:49,406 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:09:49,407 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-21 00:09:49,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2dfcd33/909650f62dcd4d1aaf0ccdd6ad481c3e/FLAG532d773e5 [2020-07-21 00:09:50,320 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:09:50,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-07-21 00:09:50,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2dfcd33/909650f62dcd4d1aaf0ccdd6ad481c3e/FLAG532d773e5 [2020-07-21 00:09:50,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd2dfcd33/909650f62dcd4d1aaf0ccdd6ad481c3e [2020-07-21 00:09:50,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:09:50,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:09:50,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:09:50,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:09:50,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:09:50,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:09:50" (1/1) ... [2020-07-21 00:09:50,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631f0443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:50, skipping insertion in model container [2020-07-21 00:09:50,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:09:50" (1/1) ... [2020-07-21 00:09:50,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:09:50,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:09:52,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:09:52,427 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:09:52,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:09:52,703 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:09:52,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52 WrapperNode [2020-07-21 00:09:52,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:09:52,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:09:52,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:09:52,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:09:52,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (1/1) ... [2020-07-21 00:09:52,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:09:52,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:09:52,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:09:52,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:09:52,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (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 00:09:52,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:09:52,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:09:52,961 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-07-21 00:09:52,962 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-07-21 00:09:52,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-07-21 00:09:52,962 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-07-21 00:09:52,962 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-07-21 00:09:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-07-21 00:09:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-07-21 00:09:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-07-21 00:09:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-07-21 00:09:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-07-21 00:09:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 00:09:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 00:09:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-07-21 00:09:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-07-21 00:09:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-07-21 00:09:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-07-21 00:09:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-07-21 00:09:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-07-21 00:09:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-07-21 00:09:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-07-21 00:09:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-07-21 00:09:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-07-21 00:09:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-07-21 00:09:52,968 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-07-21 00:09:52,972 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-07-21 00:09:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-07-21 00:09:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-07-21 00:09:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-07-21 00:09:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-07-21 00:09:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-07-21 00:09:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-07-21 00:09:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-07-21 00:09:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-07-21 00:09:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-07-21 00:09:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-07-21 00:09:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-07-21 00:09:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:09:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-07-21 00:09:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-07-21 00:09:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-07-21 00:09:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-07-21 00:09:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-07-21 00:09:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-07-21 00:09:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-07-21 00:09:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-07-21 00:09:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-21 00:09:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-21 00:09:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-21 00:09:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-21 00:09:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-21 00:09:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 00:09:52,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-07-21 00:09:52,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-07-21 00:09:52,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-07-21 00:09:52,978 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-07-21 00:09:52,978 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-07-21 00:09:52,978 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-07-21 00:09:52,979 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-07-21 00:09:52,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-07-21 00:09:52,979 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-07-21 00:09:52,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 00:09:52,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-07-21 00:09:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-07-21 00:09:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-07-21 00:09:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-07-21 00:09:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-07-21 00:09:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-07-21 00:09:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-21 00:09:52,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-21 00:09:52,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-21 00:09:52,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-07-21 00:09:52,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:09:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-07-21 00:09:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-21 00:09:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-21 00:09:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-07-21 00:09:52,982 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-07-21 00:09:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-07-21 00:09:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-07-21 00:09:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-07-21 00:09:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-07-21 00:09:52,983 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-07-21 00:09:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-07-21 00:09:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-07-21 00:09:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-07-21 00:09:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-07-21 00:09:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-07-21 00:09:52,984 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-21 00:09:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 00:09:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-07-21 00:09:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-07-21 00:09:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-07-21 00:09:52,985 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-07-21 00:09:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 00:09:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 00:09:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 00:09:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-07-21 00:09:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 00:09:52,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 00:09:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 00:09:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-21 00:09:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-07-21 00:09:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-07-21 00:09:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-21 00:09:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-07-21 00:09:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-07-21 00:09:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-07-21 00:09:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-07-21 00:09:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-07-21 00:09:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-07-21 00:09:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-07-21 00:09:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-07-21 00:09:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-07-21 00:09:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-07-21 00:09:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-07-21 00:09:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-07-21 00:09:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-07-21 00:09:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-07-21 00:09:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-07-21 00:09:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-07-21 00:09:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-07-21 00:09:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-07-21 00:09:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-07-21 00:09:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-07-21 00:09:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-07-21 00:09:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-07-21 00:09:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-07-21 00:09:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-07-21 00:09:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-07-21 00:09:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-07-21 00:09:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-07-21 00:09:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-07-21 00:09:52,992 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-07-21 00:09:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-07-21 00:09:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-07-21 00:09:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 00:09:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 00:09:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 00:09:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 00:09:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 00:09:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 00:09:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-07-21 00:09:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-07-21 00:09:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-07-21 00:09:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 00:09:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 00:09:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:09:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-07-21 00:09:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-07-21 00:09:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-07-21 00:09:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-07-21 00:09:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-07-21 00:09:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-21 00:09:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-21 00:09:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-21 00:09:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-21 00:09:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-21 00:09:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 00:09:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:09:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 00:09:52,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:09:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-07-21 00:09:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-07-21 00:09:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-21 00:09:52,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-07-21 00:09:53,709 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-07-21 00:09:53,715 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-21 00:09:56,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:09:56,663 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 00:09:56,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:09:56 BoogieIcfgContainer [2020-07-21 00:09:56,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:09:56,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:09:56,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:09:56,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:09:56,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:09:50" (1/3) ... [2020-07-21 00:09:56,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c41acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:09:56, skipping insertion in model container [2020-07-21 00:09:56,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:09:52" (2/3) ... [2020-07-21 00:09:56,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c41acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:09:56, skipping insertion in model container [2020-07-21 00:09:56,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:09:56" (3/3) ... [2020-07-21 00:09:56,691 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 00:09:56,705 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:09:56,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:09:56,731 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:09:56,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:09:56,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:09:56,762 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:09:56,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:09:56,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:09:56,762 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:09:56,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:09:56,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:09:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-07-21 00:09:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 00:09:56,822 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:09:56,823 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 00:09:56,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:09:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:09:56,832 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-07-21 00:09:56,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:09:56,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265896445] [2020-07-21 00:09:56,843 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 00:09:57,968 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 00:09:57,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:09:57,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 00:09:57,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:09:58,052 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 00:09:58,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:09:58,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265896445] [2020-07-21 00:09:58,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:09:58,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 00:09:58,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208164300] [2020-07-21 00:09:58,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 00:09:58,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:09:58,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 00:09:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 00:09:58,087 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 3 states. [2020-07-21 00:09:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:09:58,333 INFO L93 Difference]: Finished difference Result 1133 states and 1613 transitions. [2020-07-21 00:09:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 00:09:58,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-21 00:09:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:09:58,367 INFO L225 Difference]: With dead ends: 1133 [2020-07-21 00:09:58,368 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 00:09:58,386 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 00:09:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 00:09:58,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 00:09:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 00:09:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 814 transitions. [2020-07-21 00:09:58,568 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 814 transitions. Word has length 26 [2020-07-21 00:09:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:09:58,569 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 814 transitions. [2020-07-21 00:09:58,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 00:09:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 814 transitions. [2020-07-21 00:09:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 00:09:58,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:09:58,577 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 00:09:58,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:09:58,778 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:09:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:09:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-07-21 00:09:58,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:09:58,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607146258] [2020-07-21 00:09:58,780 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 00:09:59,544 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 00:09:59,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:09:59,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 00:09:59,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:09:59,575 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 00:09:59,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:09:59,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607146258] [2020-07-21 00:09:59,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:09:59,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 00:09:59,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954385503] [2020-07-21 00:09:59,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 00:09:59,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:09:59,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 00:09:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 00:09:59,579 INFO L87 Difference]: Start difference. First operand 590 states and 814 transitions. Second operand 3 states. [2020-07-21 00:09:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:09:59,642 INFO L93 Difference]: Finished difference Result 1170 states and 1620 transitions. [2020-07-21 00:09:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 00:09:59,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-21 00:09:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:09:59,651 INFO L225 Difference]: With dead ends: 1170 [2020-07-21 00:09:59,651 INFO L226 Difference]: Without dead ends: 590 [2020-07-21 00:09:59,655 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 00:09:59,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-07-21 00:09:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2020-07-21 00:09:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 00:09:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 813 transitions. [2020-07-21 00:09:59,719 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 813 transitions. Word has length 38 [2020-07-21 00:09:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:09:59,727 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 813 transitions. [2020-07-21 00:09:59,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 00:09:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 813 transitions. [2020-07-21 00:09:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 00:09:59,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:09:59,733 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 00:09:59,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:09:59,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:09:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:09:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash -100070499, now seen corresponding path program 1 times [2020-07-21 00:09:59,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:09:59,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027774439] [2020-07-21 00:09:59,937 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 00:10:02,340 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:10:02,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:10:02,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 00:10:02,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:10:02,398 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 00:10:02,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:10:02,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027774439] [2020-07-21 00:10:02,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:10:02,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 00:10:02,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33243058] [2020-07-21 00:10:02,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 00:10:02,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:10:02,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 00:10:02,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 00:10:02,403 INFO L87 Difference]: Start difference. First operand 590 states and 813 transitions. Second operand 3 states. [2020-07-21 00:10:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:10:02,482 INFO L93 Difference]: Finished difference Result 600 states and 821 transitions. [2020-07-21 00:10:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 00:10:02,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-21 00:10:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:10:02,490 INFO L225 Difference]: With dead ends: 600 [2020-07-21 00:10:02,490 INFO L226 Difference]: Without dead ends: 595 [2020-07-21 00:10:02,491 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 00:10:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-07-21 00:10:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 590. [2020-07-21 00:10:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 00:10:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-07-21 00:10:02,544 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 60 [2020-07-21 00:10:02,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:10:02,545 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-07-21 00:10:02,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 00:10:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-07-21 00:10:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 00:10:02,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:10:02,550 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 00:10:02,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:10:02,766 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:10:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:10:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash -42812197, now seen corresponding path program 1 times [2020-07-21 00:10:02,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:10:02,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195328915] [2020-07-21 00:10:02,771 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 00:10:05,284 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:10:05,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:10:05,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 00:10:05,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:10:05,358 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 00:10:05,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:10:05,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195328915] [2020-07-21 00:10:05,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:10:05,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 00:10:05,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416148878] [2020-07-21 00:10:05,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 00:10:05,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:10:05,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 00:10:05,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 00:10:05,361 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 4 states. [2020-07-21 00:10:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:10:07,812 INFO L93 Difference]: Finished difference Result 1730 states and 2392 transitions. [2020-07-21 00:10:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 00:10:07,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-07-21 00:10:07,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:10:07,823 INFO L225 Difference]: With dead ends: 1730 [2020-07-21 00:10:07,823 INFO L226 Difference]: Without dead ends: 1150 [2020-07-21 00:10:07,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 00:10:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2020-07-21 00:10:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1094. [2020-07-21 00:10:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2020-07-21 00:10:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1523 transitions. [2020-07-21 00:10:07,933 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1523 transitions. Word has length 60 [2020-07-21 00:10:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:10:07,936 INFO L479 AbstractCegarLoop]: Abstraction has 1094 states and 1523 transitions. [2020-07-21 00:10:07,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 00:10:07,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1523 transitions. [2020-07-21 00:10:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 00:10:07,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:10:07,938 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 00:10:08,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:10:08,153 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:10:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:10:08,154 INFO L82 PathProgramCache]: Analyzing trace with hash -437178983, now seen corresponding path program 1 times [2020-07-21 00:10:08,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:10:08,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110853071] [2020-07-21 00:10:08,154 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 00:10:11,126 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:10:11,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:10:11,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 00:10:11,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:10:11,173 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 00:10:11,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:10:11,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110853071] [2020-07-21 00:10:11,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:10:11,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 00:10:11,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087638789] [2020-07-21 00:10:11,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 00:10:11,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:10:11,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 00:10:11,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 00:10:11,176 INFO L87 Difference]: Start difference. First operand 1094 states and 1523 transitions. Second operand 3 states. [2020-07-21 00:10:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:10:11,251 INFO L93 Difference]: Finished difference Result 2182 states and 3047 transitions. [2020-07-21 00:10:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 00:10:11,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-21 00:10:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:10:11,260 INFO L225 Difference]: With dead ends: 2182 [2020-07-21 00:10:11,261 INFO L226 Difference]: Without dead ends: 1098 [2020-07-21 00:10:11,265 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 00:10:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-07-21 00:10:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2020-07-21 00:10:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-07-21 00:10:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1527 transitions. [2020-07-21 00:10:11,328 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1527 transitions. Word has length 60 [2020-07-21 00:10:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:10:11,328 INFO L479 AbstractCegarLoop]: Abstraction has 1098 states and 1527 transitions. [2020-07-21 00:10:11,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 00:10:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1527 transitions. [2020-07-21 00:10:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-21 00:10:11,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:10:11,330 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 00:10:11,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:10:11,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:10:11,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:10:11,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1237303988, now seen corresponding path program 1 times [2020-07-21 00:10:11,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:10:11,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648325711] [2020-07-21 00:10:11,546 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 00:10:14,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:10:14,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:10:14,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 00:10:14,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:10:14,197 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 00:10:14,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:10:14,355 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 00:10:14,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648325711] [2020-07-21 00:10:14,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:10:14,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 00:10:14,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120171741] [2020-07-21 00:10:14,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 00:10:14,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:10:14,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 00:10:14,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 00:10:14,358 INFO L87 Difference]: Start difference. First operand 1098 states and 1527 transitions. Second operand 6 states. [2020-07-21 00:10:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:10:14,504 INFO L93 Difference]: Finished difference Result 2198 states and 3067 transitions. [2020-07-21 00:10:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 00:10:14,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-07-21 00:10:14,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:10:14,513 INFO L225 Difference]: With dead ends: 2198 [2020-07-21 00:10:14,513 INFO L226 Difference]: Without dead ends: 1110 [2020-07-21 00:10:14,518 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 00:10:14,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-07-21 00:10:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2020-07-21 00:10:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2020-07-21 00:10:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1539 transitions. [2020-07-21 00:10:14,577 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1539 transitions. Word has length 62 [2020-07-21 00:10:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:10:14,577 INFO L479 AbstractCegarLoop]: Abstraction has 1110 states and 1539 transitions. [2020-07-21 00:10:14,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 00:10:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1539 transitions. [2020-07-21 00:10:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-21 00:10:14,579 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:10:14,579 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 00:10:14,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:10:14,780 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:10:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:10:14,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1548296581, now seen corresponding path program 2 times [2020-07-21 00:10:14,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:10:14,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659060957] [2020-07-21 00:10:14,782 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 00:10:18,146 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:10:18,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:10:18,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 00:10:18,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:10:18,210 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 00:10:18,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:10:18,430 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 00:10:18,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659060957] [2020-07-21 00:10:18,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:10:18,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-21 00:10:18,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413384422] [2020-07-21 00:10:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 00:10:18,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:10:18,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 00:10:18,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 00:10:18,433 INFO L87 Difference]: Start difference. First operand 1110 states and 1539 transitions. Second operand 12 states. [2020-07-21 00:10:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:10:24,819 INFO L93 Difference]: Finished difference Result 2234 states and 3109 transitions. [2020-07-21 00:10:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 00:10:24,820 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-07-21 00:10:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:10:24,827 INFO L225 Difference]: With dead ends: 2234 [2020-07-21 00:10:24,827 INFO L226 Difference]: Without dead ends: 1134 [2020-07-21 00:10:24,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=93, Invalid=146, Unknown=1, NotChecked=0, Total=240 [2020-07-21 00:10:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-07-21 00:10:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2020-07-21 00:10:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-07-21 00:10:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1563 transitions. [2020-07-21 00:10:24,895 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1563 transitions. Word has length 68 [2020-07-21 00:10:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:10:24,897 INFO L479 AbstractCegarLoop]: Abstraction has 1134 states and 1563 transitions. [2020-07-21 00:10:24,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 00:10:24,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1563 transitions. [2020-07-21 00:10:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 00:10:24,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:10:24,900 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 00:10:25,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:10:25,114 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:10:25,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:10:25,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1070658329, now seen corresponding path program 3 times [2020-07-21 00:10:25,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:10:25,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582332546] [2020-07-21 00:10:25,115 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 00:11:02,742 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:11:02,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:11:03,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 00:11:03,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:11:03,725 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 00:11:03,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:11:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 102 refuted. 8 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 00:11:16,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582332546] [2020-07-21 00:11:16,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:11:16,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-07-21 00:11:16,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781356410] [2020-07-21 00:11:16,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 00:11:16,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:11:16,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 00:11:16,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=380, Unknown=6, NotChecked=0, Total=552 [2020-07-21 00:11:16,746 INFO L87 Difference]: Start difference. First operand 1134 states and 1563 transitions. Second operand 24 states. [2020-07-21 00:11:17,317 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 11 [2020-07-21 00:11:17,837 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-07-21 00:11:20,175 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 11 [2020-07-21 00:11:20,589 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-21 00:11:23,169 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-21 00:11:28,202 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-07-21 00:11:32,694 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2020-07-21 00:11:34,995 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2020-07-21 00:11:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:11:37,343 INFO L93 Difference]: Finished difference Result 2306 states and 3193 transitions. [2020-07-21 00:11:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 00:11:37,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-07-21 00:11:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:11:37,356 INFO L225 Difference]: With dead ends: 2306 [2020-07-21 00:11:37,357 INFO L226 Difference]: Without dead ends: 1182 [2020-07-21 00:11:37,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=405, Invalid=709, Unknown=8, NotChecked=0, Total=1122 [2020-07-21 00:11:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-07-21 00:11:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2020-07-21 00:11:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-07-21 00:11:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1611 transitions. [2020-07-21 00:11:37,425 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1611 transitions. Word has length 80 [2020-07-21 00:11:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:11:37,426 INFO L479 AbstractCegarLoop]: Abstraction has 1182 states and 1611 transitions. [2020-07-21 00:11:37,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 00:11:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1611 transitions. [2020-07-21 00:11:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-21 00:11:37,435 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:11:37,435 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 00:11:37,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:11:37,650 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:11:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:11:37,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1070029483, now seen corresponding path program 4 times [2020-07-21 00:11:37,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:11:37,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416677488] [2020-07-21 00:11:37,652 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:24:32,413 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:24:32,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat