/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-5644d1e-m
[2020-08-19 06:31:05,023 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-19 06:31:05,026 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-19 06:31:05,056 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-19 06:31:05,056 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-19 06:31:05,057 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-19 06:31:05,058 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-19 06:31:05,060 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-19 06:31:05,062 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-19 06:31:05,062 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-19 06:31:05,063 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-19 06:31:05,064 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-19 06:31:05,065 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-19 06:31:05,066 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-19 06:31:05,067 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-19 06:31:05,068 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-19 06:31:05,069 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-19 06:31:05,069 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-19 06:31:05,071 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-19 06:31:05,073 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-19 06:31:05,074 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-19 06:31:05,075 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-19 06:31:05,076 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-19 06:31:05,077 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-19 06:31:05,079 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-19 06:31:05,079 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-19 06:31:05,080 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-19 06:31:05,080 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-19 06:31:05,081 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-19 06:31:05,082 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-19 06:31:05,082 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-19 06:31:05,083 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-19 06:31:05,084 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-19 06:31:05,084 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-19 06:31:05,085 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-19 06:31:05,086 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-19 06:31:05,086 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-19 06:31:05,086 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-19 06:31:05,087 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-19 06:31:05,087 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-19 06:31:05,088 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-19 06:31:05,089 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2020-08-19 06:31:05,114 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-19 06:31:05,114 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-19 06:31:05,116 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-19 06:31:05,116 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-19 06:31:05,116 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-19 06:31:05,116 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-19 06:31:05,117 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-19 06:31:05,117 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-19 06:31:05,117 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-19 06:31:05,117 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-19 06:31:05,117 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-19 06:31:05,118 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-19 06:31:05,118 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-19 06:31:05,118 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-19 06:31:05,118 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-19 06:31:05,118 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-19 06:31:05,119 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-19 06:31:05,119 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-19 06:31:05,119 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-19 06:31:05,119 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-19 06:31:05,120 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-19 06:31:05,120 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-19 06:31:05,120 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-19 06:31:05,120 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-19 06:31:05,120 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-19 06:31:05,121 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-19 06:31:05,121 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2020-08-19 06:31:05,121 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 -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;
[2020-08-19 06:31:05,425 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-19 06:31:05,438 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-19 06:31:05,442 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-19 06:31:05,444 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-19 06:31:05,445 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-19 06:31:05,445 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i
[2020-08-19 06:31:05,509 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f92dddf0/e3214a2bcd98443587b584476d8856b0/FLAG83f9470fb
[2020-08-19 06:31:06,273 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-19 06:31:06,274 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i
[2020-08-19 06:31:06,317 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f92dddf0/e3214a2bcd98443587b584476d8856b0/FLAG83f9470fb
[2020-08-19 06:31:06,796 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f92dddf0/e3214a2bcd98443587b584476d8856b0
[2020-08-19 06:31:06,807 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-19 06:31:06,809 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-19 06:31:06,810 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-19 06:31:06,810 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-19 06:31:06,814 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-19 06:31:06,815 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:31:06" (1/1) ...
[2020-08-19 06:31:06,818 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c1f5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:06, skipping insertion in model container
[2020-08-19 06:31:06,818 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:31:06" (1/1) ...
[2020-08-19 06:31:06,826 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-19 06:31:06,929 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-19 06:31:08,280 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-19 06:31:08,297 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-19 06:31:08,504 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-19 06:31:08,606 INFO  L208         MainTranslator]: Completed translation
[2020-08-19 06:31:08,607 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08 WrapperNode
[2020-08-19 06:31:08,608 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-19 06:31:08,609 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-19 06:31:08,609 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-19 06:31:08,609 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-19 06:31:08,626 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,627 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,704 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,709 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,797 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,812 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,825 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
[2020-08-19 06:31:08,844 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-19 06:31:08,845 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-19 06:31:08,845 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-19 06:31:08,845 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-19 06:31:08,846 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-08-19 06:31:08,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-19 06:31:08,923 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-19 06:31:08,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure readb
[2020-08-19 06:31:08,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure writeb
[2020-08-19 06:31:08,924 INFO  L138     BoogieDeclarations]: Found implementation of procedure ioremap
[2020-08-19 06:31:08,925 INFO  L138     BoogieDeclarations]: Found implementation of procedure memcpy_fromio
[2020-08-19 06:31:08,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure memcpy_toio
[2020-08-19 06:31:08,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure outb
[2020-08-19 06:31:08,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure inb
[2020-08-19 06:31:08,926 INFO  L138     BoogieDeclarations]: Found implementation of procedure __kmalloc
[2020-08-19 06:31:08,927 INFO  L138     BoogieDeclarations]: Found implementation of procedure kmalloc
[2020-08-19 06:31:08,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure kzalloc
[2020-08-19 06:31:08,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-19 06:31:08,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2020-08-19 06:31:08,928 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_zalloc
[2020-08-19 06:31:08,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_int
[2020-08-19 06:31:08,929 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong
[2020-08-19 06:31:08,931 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_error
[2020-08-19 06:31:08,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_stop
[2020-08-19 06:31:08,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect
[2020-08-19 06:31:08,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap
[2020-08-19 06:31:08,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure request_irq
[2020-08-19 06:31:08,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure netdev_priv
[2020-08-19 06:31:08,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_probe
[2020-08-19 06:31:08,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure check_mirror
[2020-08-19 06:31:08,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_found
[2020-08-19 06:31:08,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_command
[2020-08-19 06:31:08,933 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_status
[2020-08-19 06:31:08,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_setmask
[2020-08-19 06:31:08,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_reset
[2020-08-19 06:31:08,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card
[2020-08-19 06:31:08,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card
[2020-08-19 06:31:08,934 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_init
[2020-08-19 06:31:08,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure com90xx_exit
[2020-08-19 06:31:08,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_irq_1
[2020-08-19 06:31:08,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1
[2020-08-19 06:31:08,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure reg_check_1
[2020-08-19 06:31:08,935 INFO  L138     BoogieDeclarations]: Found implementation of procedure choose_interrupt_1
[2020-08-19 06:31:08,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1
[2020-08-19 06:31:08,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-19 06:31:08,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5
[2020-08-19 06:31:08,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6
[2020-08-19 06:31:08,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7
[2020-08-19 06:31:08,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8
[2020-08-19 06:31:08,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11
[2020-08-19 06:31:08,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12
[2020-08-19 06:31:08,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13
[2020-08-19 06:31:08,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14
[2020-08-19 06:31:08,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_init
[2020-08-19 06:31:08,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_add
[2020-08-19 06:31:08,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_remove
[2020-08-19 06:31:08,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_contains
[2020-08-19 06:31:08,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty
[2020-08-19 06:31:08,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_is_err
[2020-08-19 06:31:08,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_err_ptr
[2020-08-19 06:31:08,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_ptr_err
[2020-08-19 06:31:08,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null
[2020-08-19 06:31:08,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc
[2020-08-19 06:31:08,941 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_initialize
[2020-08-19 06:31:08,941 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_free
[2020-08-19 06:31:08,941 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int
[2020-08-19 06:31:08,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb
[2020-08-19 06:31:08,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb
[2020-08-19 06:31:08,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_current
[2020-08-19 06:31:08,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_check_final_state
[2020-08-19 06:31:08,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure __const_udelay
[2020-08-19 06:31:08,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure __release_region
[2020-08-19 06:31:08,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure __request_region
[2020-08-19 06:31:08,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure alloc_arcdev
[2020-08-19 06:31:08,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure arcnet_interrupt
[2020-08-19 06:31:08,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure free_irq
[2020-08-19 06:31:08,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure free_netdev
[2020-08-19 06:31:08,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure ioremap_nocache
[2020-08-19 06:31:08,944 INFO  L138     BoogieDeclarations]: Found implementation of procedure iounmap
[2020-08-19 06:31:08,945 INFO  L138     BoogieDeclarations]: Found implementation of procedure printk
[2020-08-19 06:31:08,945 INFO  L138     BoogieDeclarations]: Found implementation of procedure probe_irq_off
[2020-08-19 06:31:08,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure probe_irq_on
[2020-08-19 06:31:08,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure register_netdev
[2020-08-19 06:31:08,946 INFO  L138     BoogieDeclarations]: Found implementation of procedure request_threaded_irq
[2020-08-19 06:31:08,947 INFO  L138     BoogieDeclarations]: Found implementation of procedure unregister_netdev
[2020-08-19 06:31:08,947 INFO  L138     BoogieDeclarations]: Found implementation of procedure kfree
[2020-08-19 06:31:08,947 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2020-08-19 06:31:08,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy
[2020-08-19 06:31:08,948 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-19 06:31:08,948 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv__builtin_expect
[2020-08-19 06:31:08,948 INFO  L130     BoogieDeclarations]: Found specification of procedure printk
[2020-08-19 06:31:08,948 INFO  L130     BoogieDeclarations]: Found specification of procedure __request_region
[2020-08-19 06:31:08,949 INFO  L130     BoogieDeclarations]: Found specification of procedure __release_region
[2020-08-19 06:31:08,949 INFO  L130     BoogieDeclarations]: Found specification of procedure readb
[2020-08-19 06:31:08,949 INFO  L130     BoogieDeclarations]: Found specification of procedure writeb
[2020-08-19 06:31:08,949 INFO  L130     BoogieDeclarations]: Found specification of procedure ioremap_nocache
[2020-08-19 06:31:08,949 INFO  L130     BoogieDeclarations]: Found specification of procedure ioremap
[2020-08-19 06:31:08,949 INFO  L130     BoogieDeclarations]: Found specification of procedure memcpy
[2020-08-19 06:31:08,950 INFO  L130     BoogieDeclarations]: Found specification of procedure iounmap
[2020-08-19 06:31:08,950 INFO  L130     BoogieDeclarations]: Found specification of procedure memcpy_fromio
[2020-08-19 06:31:08,950 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy
[2020-08-19 06:31:08,950 INFO  L130     BoogieDeclarations]: Found specification of procedure memcpy_toio
[2020-08-19 06:31:08,950 INFO  L130     BoogieDeclarations]: Found specification of procedure outb
[2020-08-19 06:31:08,950 INFO  L130     BoogieDeclarations]: Found specification of procedure inb
[2020-08-19 06:31:08,951 INFO  L130     BoogieDeclarations]: Found specification of procedure kfree
[2020-08-19 06:31:08,951 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_malloc
[2020-08-19 06:31:08,951 INFO  L130     BoogieDeclarations]: Found specification of procedure __kmalloc
[2020-08-19 06:31:08,951 INFO  L130     BoogieDeclarations]: Found specification of procedure kmalloc
[2020-08-19 06:31:08,951 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_zalloc
[2020-08-19 06:31:08,951 INFO  L130     BoogieDeclarations]: Found specification of procedure kzalloc
[2020-08-19 06:31:08,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6
[2020-08-19 06:31:08,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7
[2020-08-19 06:31:08,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8
[2020-08-19 06:31:08,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11
[2020-08-19 06:31:08,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5
[2020-08-19 06:31:08,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_free
[2020-08-19 06:31:08,953 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-19 06:31:08,953 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-08-19 06:31:08,953 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-19 06:31:08,953 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong
[2020-08-19 06:31:08,953 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-08-19 06:31:08,953 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-19 06:31:08,954 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-19 06:31:08,954 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2020-08-19 06:31:08,954 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_int
[2020-08-19 06:31:08,954 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_ulong
[2020-08-19 06:31:08,955 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_error
[2020-08-19 06:31:08,955 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_stop
[2020-08-19 06:31:08,955 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv__builtin_trap
[2020-08-19 06:31:08,955 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_irq_1
[2020-08-19 06:31:08,956 INFO  L130     BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1
[2020-08-19 06:31:08,957 INFO  L130     BoogieDeclarations]: Found specification of procedure reg_check_1
[2020-08-19 06:31:08,957 INFO  L130     BoogieDeclarations]: Found specification of procedure choose_interrupt_1
[2020-08-19 06:31:08,958 INFO  L130     BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1
[2020-08-19 06:31:08,958 INFO  L130     BoogieDeclarations]: Found specification of procedure request_threaded_irq
[2020-08-19 06:31:08,958 INFO  L130     BoogieDeclarations]: Found specification of procedure request_irq
[2020-08-19 06:31:08,961 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_request_irq_12
[2020-08-19 06:31:08,962 INFO  L130     BoogieDeclarations]: Found specification of procedure free_irq
[2020-08-19 06:31:08,965 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_free_irq_13
[2020-08-19 06:31:08,965 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_free_irq_14
[2020-08-19 06:31:08,965 INFO  L130     BoogieDeclarations]: Found specification of procedure probe_irq_on
[2020-08-19 06:31:08,965 INFO  L130     BoogieDeclarations]: Found specification of procedure probe_irq_off
[2020-08-19 06:31:08,965 INFO  L130     BoogieDeclarations]: Found specification of procedure __const_udelay
[2020-08-19 06:31:08,966 INFO  L130     BoogieDeclarations]: Found specification of procedure netdev_priv
[2020-08-19 06:31:08,966 INFO  L130     BoogieDeclarations]: Found specification of procedure free_netdev
[2020-08-19 06:31:08,966 INFO  L130     BoogieDeclarations]: Found specification of procedure register_netdev
[2020-08-19 06:31:08,967 INFO  L130     BoogieDeclarations]: Found specification of procedure unregister_netdev
[2020-08-19 06:31:08,967 INFO  L130     BoogieDeclarations]: Found specification of procedure arcnet_interrupt
[2020-08-19 06:31:08,967 INFO  L130     BoogieDeclarations]: Found specification of procedure alloc_arcdev
[2020-08-19 06:31:08,968 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_found
[2020-08-19 06:31:08,975 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_command
[2020-08-19 06:31:08,975 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_status
[2020-08-19 06:31:08,975 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_setmask
[2020-08-19 06:31:08,975 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_reset
[2020-08-19 06:31:08,975 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card
[2020-08-19 06:31:08,976 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card
[2020-08-19 06:31:08,976 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_probe
[2020-08-19 06:31:08,976 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-19 06:31:08,976 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-19 06:31:08,976 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-19 06:31:08,976 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-19 06:31:08,977 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-19 06:31:08,977 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-19 06:31:08,977 INFO  L130     BoogieDeclarations]: Found specification of procedure check_mirror
[2020-08-19 06:31:08,977 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_init
[2020-08-19 06:31:08,977 INFO  L130     BoogieDeclarations]: Found specification of procedure com90xx_exit
[2020-08-19 06:31:08,977 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_initialize
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_check_final_state
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_init
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_add
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_remove
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_contains
[2020-08-19 06:31:08,978 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_is_empty
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_is_err
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_err_ptr
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_ptr_err
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_alloc
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_free_int
[2020-08-19 06:31:08,979 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb
[2020-08-19 06:31:08,980 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb
[2020-08-19 06:31:08,980 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_current
[2020-08-19 06:31:08,980 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-19 06:31:08,980 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-19 06:31:08,980 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-19 06:31:08,980 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-19 06:31:08,981 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2020-08-19 06:31:08,981 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~int
[2020-08-19 06:31:08,981 INFO  L130     BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$
[2020-08-19 06:31:08,981 INFO  L130     BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$
[2020-08-19 06:31:09,606 INFO  L732   $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true;
[2020-08-19 06:31:12,853 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-19 06:31:12,853 INFO  L295             CfgBuilder]: Removed 5 assume(true) statements.
[2020-08-19 06:31:12,862 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:31:12 BoogieIcfgContainer
[2020-08-19 06:31:12,862 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-19 06:31:12,863 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-19 06:31:12,864 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-19 06:31:12,867 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-19 06:31:12,867 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:31:06" (1/3) ...
[2020-08-19 06:31:12,868 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ff6dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:31:12, skipping insertion in model container
[2020-08-19 06:31:12,868 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:31:08" (2/3) ...
[2020-08-19 06:31:12,868 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ff6dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:31:12, skipping insertion in model container
[2020-08-19 06:31:12,868 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:31:12" (3/3) ...
[2020-08-19 06:31:12,870 INFO  L109   eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i
[2020-08-19 06:31:12,880 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-19 06:31:12,889 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-19 06:31:12,903 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-19 06:31:12,933 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-19 06:31:12,934 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-19 06:31:12,934 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-19 06:31:12,934 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-19 06:31:12,934 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-19 06:31:12,934 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-19 06:31:12,934 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-19 06:31:12,934 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-19 06:31:12,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 624 states.
[2020-08-19 06:31:12,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-08-19 06:31:12,976 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 06:31:12,977 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]
[2020-08-19 06:31:12,977 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 06:31:12,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 06:31:12,983 INFO  L82        PathProgramCache]: Analyzing trace with hash -337560205, now seen corresponding path program 1 times
[2020-08-19 06:31:12,992 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 06:31:12,993 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132219365]
[2020-08-19 06:31:12,993 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 06:31:13,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:15,232 WARN  L193               SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 526
[2020-08-19 06:31:15,235 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:31:15,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:15,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-19 06:31:15,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:15,425 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:31:15,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:15,460 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-08-19 06:31:15,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:15,470 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2020-08-19 06:31:15,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:15,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 06:31:15,506 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132219365]
[2020-08-19 06:31:15,508 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 06:31:15,509 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-19 06:31:15,510 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346727998]
[2020-08-19 06:31:15,516 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-19 06:31:15,517 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 06:31:15,533 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-19 06:31:15,534 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-19 06:31:15,537 INFO  L87              Difference]: Start difference. First operand 624 states. Second operand 6 states.
[2020-08-19 06:31:18,875 WARN  L193               SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 528
[2020-08-19 06:31:29,667 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 06:31:29,668 INFO  L93              Difference]: Finished difference Result 1420 states and 2070 transitions.
[2020-08-19 06:31:29,669 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-08-19 06:31:29,670 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 36
[2020-08-19 06:31:29,671 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 06:31:29,695 INFO  L225             Difference]: With dead ends: 1420
[2020-08-19 06:31:29,695 INFO  L226             Difference]: Without dead ends: 864
[2020-08-19 06:31:29,704 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110
[2020-08-19 06:31:29,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 864 states.
[2020-08-19 06:31:29,907 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600.
[2020-08-19 06:31:29,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 600 states.
[2020-08-19 06:31:29,913 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 822 transitions.
[2020-08-19 06:31:29,915 INFO  L78                 Accepts]: Start accepts. Automaton has 600 states and 822 transitions. Word has length 36
[2020-08-19 06:31:29,916 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 06:31:29,916 INFO  L479      AbstractCegarLoop]: Abstraction has 600 states and 822 transitions.
[2020-08-19 06:31:29,916 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-19 06:31:29,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 600 states and 822 transitions.
[2020-08-19 06:31:29,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-08-19 06:31:29,920 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 06:31:29,920 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]
[2020-08-19 06:31:29,920 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-19 06:31:29,921 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 06:31:29,921 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 06:31:29,921 INFO  L82        PathProgramCache]: Analyzing trace with hash -1418341137, now seen corresponding path program 1 times
[2020-08-19 06:31:29,921 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 06:31:29,922 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514840737]
[2020-08-19 06:31:29,922 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 06:31:30,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,261 WARN  L193               SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 526
[2020-08-19 06:31:31,269 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:31:31,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,369 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-19 06:31:31,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,377 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:31:31,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,443 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-08-19 06:31:31,451 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-19 06:31:31,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,586 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-19 06:31:31,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:31,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 06:31:31,612 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514840737]
[2020-08-19 06:31:31,612 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 06:31:31,612 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-19 06:31:31,613 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829488264]
[2020-08-19 06:31:31,615 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-19 06:31:31,615 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 06:31:31,615 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-19 06:31:31,616 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2020-08-19 06:31:31,616 INFO  L87              Difference]: Start difference. First operand 600 states and 822 transitions. Second operand 8 states.
[2020-08-19 06:31:32,795 WARN  L193               SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 529
[2020-08-19 06:31:38,004 WARN  L193               SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 531
[2020-08-19 06:31:49,706 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 06:31:49,706 INFO  L93              Difference]: Finished difference Result 1312 states and 1821 transitions.
[2020-08-19 06:31:49,707 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-19 06:31:49,707 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 48
[2020-08-19 06:31:49,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 06:31:49,713 INFO  L225             Difference]: With dead ends: 1312
[2020-08-19 06:31:49,713 INFO  L226             Difference]: Without dead ends: 726
[2020-08-19 06:31:49,716 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2020-08-19 06:31:49,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 726 states.
[2020-08-19 06:31:49,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 600.
[2020-08-19 06:31:49,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 600 states.
[2020-08-19 06:31:49,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 820 transitions.
[2020-08-19 06:31:49,872 INFO  L78                 Accepts]: Start accepts. Automaton has 600 states and 820 transitions. Word has length 48
[2020-08-19 06:31:49,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 06:31:49,873 INFO  L479      AbstractCegarLoop]: Abstraction has 600 states and 820 transitions.
[2020-08-19 06:31:49,873 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-19 06:31:49,873 INFO  L276                IsEmpty]: Start isEmpty. Operand 600 states and 820 transitions.
[2020-08-19 06:31:49,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-08-19 06:31:49,876 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 06:31:49,876 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]
[2020-08-19 06:31:49,876 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-19 06:31:49,876 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 06:31:49,876 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 06:31:49,877 INFO  L82        PathProgramCache]: Analyzing trace with hash -1356301523, now seen corresponding path program 1 times
[2020-08-19 06:31:49,877 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 06:31:49,877 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754457875]
[2020-08-19 06:31:49,877 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 06:31:49,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,298 WARN  L193               SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 526
[2020-08-19 06:31:51,301 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:31:51,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,374 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-19 06:31:51,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,379 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:31:51,380 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,491 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-08-19 06:31:51,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-19 06:31:51,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,710 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-08-19 06:31:51,714 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:31:51,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 06:31:51,742 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754457875]
[2020-08-19 06:31:51,742 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-19 06:31:51,742 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-08-19 06:31:51,743 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669775218]
[2020-08-19 06:31:51,743 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-19 06:31:51,743 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 06:31:51,744 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-19 06:31:51,744 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-19 06:31:51,744 INFO  L87              Difference]: Start difference. First operand 600 states and 820 transitions. Second operand 7 states.
[2020-08-19 06:31:53,070 WARN  L193               SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 529
[2020-08-19 06:32:07,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-19 06:32:07,933 INFO  L93              Difference]: Finished difference Result 1314 states and 1820 transitions.
[2020-08-19 06:32:07,934 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-19 06:32:07,934 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 48
[2020-08-19 06:32:07,934 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-19 06:32:07,940 INFO  L225             Difference]: With dead ends: 1314
[2020-08-19 06:32:07,940 INFO  L226             Difference]: Without dead ends: 728
[2020-08-19 06:32:07,943 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2020-08-19 06:32:07,944 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 728 states.
[2020-08-19 06:32:08,096 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 602.
[2020-08-19 06:32:08,096 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 602 states.
[2020-08-19 06:32:08,100 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 822 transitions.
[2020-08-19 06:32:08,100 INFO  L78                 Accepts]: Start accepts. Automaton has 602 states and 822 transitions. Word has length 48
[2020-08-19 06:32:08,101 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-19 06:32:08,101 INFO  L479      AbstractCegarLoop]: Abstraction has 602 states and 822 transitions.
[2020-08-19 06:32:08,101 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-19 06:32:08,101 INFO  L276                IsEmpty]: Start isEmpty. Operand 602 states and 822 transitions.
[2020-08-19 06:32:08,103 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2020-08-19 06:32:08,103 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-19 06:32:08,103 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]
[2020-08-19 06:32:08,104 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-19 06:32:08,104 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-19 06:32:08,104 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-19 06:32:08,104 INFO  L82        PathProgramCache]: Analyzing trace with hash -2078713816, now seen corresponding path program 1 times
[2020-08-19 06:32:08,105 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-19 06:32:08,105 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958987544]
[2020-08-19 06:32:08,105 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-19 06:32:08,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,496 WARN  L193               SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 526
[2020-08-19 06:32:09,498 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:32:09,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,578 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-19 06:32:09,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,584 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-19 06:32:09,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,650 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-08-19 06:32:09,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,730 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-08-19 06:32:09,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,816 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-08-19 06:32:09,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-19 06:32:09,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-19 06:32:09,835 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958987544]
[2020-08-19 06:32:09,836 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-19 06:32:09,836 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-08-19 06:32:09,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633993155]
[2020-08-19 06:32:09,837 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-19 06:32:09,837 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-19 06:32:09,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-19 06:32:09,838 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-08-19 06:32:09,838 INFO  L87              Difference]: Start difference. First operand 602 states and 822 transitions. Second operand 8 states.