/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 15:36:45,117 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 15:36:45,121 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 15:36:45,171 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 15:36:45,171 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 15:36:45,182 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 15:36:45,184 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 15:36:45,188 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 15:36:45,191 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 15:36:45,193 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 15:36:45,196 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 15:36:45,197 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 15:36:45,197 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 15:36:45,200 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 15:36:45,202 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 15:36:45,203 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 15:36:45,204 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 15:36:45,206 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 15:36:45,208 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 15:36:45,215 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 15:36:45,218 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 15:36:45,219 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 15:36:45,220 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 15:36:45,221 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 15:36:45,226 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 15:36:45,226 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 15:36:45,226 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 15:36:45,229 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 15:36:45,229 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 15:36:45,230 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 15:36:45,231 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 15:36:45,231 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 15:36:45,232 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 15:36:45,233 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 15:36:45,234 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 15:36:45,234 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 15:36:45,235 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 15:36:45,235 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 15:36:45,235 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 15:36:45,236 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 15:36:45,238 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 15:36:45,239 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
[2020-09-24 15:36:45,288 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 15:36:45,288 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 15:36:45,290 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 15:36:45,290 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 15:36:45,291 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 15:36:45,291 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 15:36:45,291 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 15:36:45,292 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 15:36:45,292 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 15:36:45,292 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 15:36:45,293 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 15:36:45,293 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 15:36:45,293 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 15:36:45,294 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 15:36:45,294 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 15:36:45,294 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 15:36:45,294 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 15:36:45,295 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 15:36:45,295 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:36:45,295 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 15:36:45,295 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 15:36:45,295 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 15:36:45,296 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 15:36:45,296 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 15:36:45,296 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 15:36:45,296 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 15:36:45,296 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2020-09-24 15:36:45,297 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.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false
[2020-09-24 15:36:45,735 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 15:36:45,762 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 15:36:45,767 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 15:36:45,770 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 15:36:45,770 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 15:36:45,772 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i
[2020-09-24 15:36:45,862 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f77fd0b78/0502880902cb44e39f7171e22fe62172/FLAG142e7aa57
[2020-09-24 15:36:46,727 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 15:36:46,728 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i
[2020-09-24 15:36:46,767 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f77fd0b78/0502880902cb44e39f7171e22fe62172/FLAG142e7aa57
[2020-09-24 15:36:47,240 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f77fd0b78/0502880902cb44e39f7171e22fe62172
[2020-09-24 15:36:47,254 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 15:36:47,260 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 15:36:47,262 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 15:36:47,262 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 15:36:47,266 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 15:36:47,267 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:36:47" (1/1) ...
[2020-09-24 15:36:47,272 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41308f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:47, skipping insertion in model container
[2020-09-24 15:36:47,272 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:36:47" (1/1) ...
[2020-09-24 15:36:47,282 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 15:36:47,415 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 15:36:49,021 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:36:49,043 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 15:36:49,331 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:36:49,434 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 15:36:49,436 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49 WrapperNode
[2020-09-24 15:36:49,436 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 15:36:49,438 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 15:36:49,438 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 15:36:49,438 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 15:36:49,458 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,459 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,523 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,527 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,590 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,601 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,612 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (1/1) ...
[2020-09-24 15:36:49,627 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 15:36:49,628 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 15:36:49,628 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 15:36:49,628 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 15:36:49,629 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (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
[2020-09-24 15:36:49,725 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 15:36:49,725 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 15:36:49,725 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0
[2020-09-24 15:36:49,726 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int
[2020-09-24 15:36:49,726 INFO  L138     BoogieDeclarations]: Found implementation of procedure test_and_clear_bit
[2020-09-24 15:36:49,726 INFO  L138     BoogieDeclarations]: Found implementation of procedure atomic_read
[2020-09-24 15:36:49,727 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_end_pointer
[2020-09-24 15:36:49,728 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_cloned
[2020-09-24 15:36:49,728 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_shared
[2020-09-24 15:36:49,728 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_share_check
[2020-09-24 15:36:49,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_headroom
[2020-09-24 15:36:49,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header
[2020-09-24 15:36:49,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure __skb_cow
[2020-09-24 15:36:49,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_cow
[2020-09-24 15:36:49,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 15:36:49,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc
[2020-09-24 15:36:49,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2020-09-24 15:36:49,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_zalloc
[2020-09-24 15:36:49,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_int
[2020-09-24 15:36:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong
[2020-09-24 15:36:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_error
[2020-09-24 15:36:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_stop
[2020-09-24 15:36:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect
[2020-09-24 15:36:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap
[2020-09-24 15:36:49,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure netdev_priv
[2020-09-24 15:36:49,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any
[2020-09-24 15:36:49,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure netif_dormant_off
[2020-09-24 15:36:49,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure dev_to_hdlc
[2020-09-24 15:36:49,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_type_trans
[2020-09-24 15:36:49,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect
[2020-09-24 15:36:49,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_connected
[2020-09-24 15:36:49,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_disconnected
[2020-09-24 15:36:49,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_data_indication
[2020-09-24 15:36:49,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_data_transmit
[2020-09-24 15:36:49,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_xmit
[2020-09-24 15:36:49,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_open
[2020-09-24 15:36:49,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_close
[2020-09-24 15:36:49,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_rx
[2020-09-24 15:36:49,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure x25_ioctl
[2020-09-24 15:36:49,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure mod_init
[2020-09-24 15:36:49,778 INFO  L138     BoogieDeclarations]: Found implementation of procedure mod_exit
[2020-09-24 15:36:49,778 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1
[2020-09-24 15:36:49,778 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 15:36:49,778 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5
[2020-09-24 15:36:49,778 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6
[2020-09-24 15:36:49,778 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_init
[2020-09-24 15:36:49,779 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_add
[2020-09-24 15:36:49,780 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_remove
[2020-09-24 15:36:49,780 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_contains
[2020-09-24 15:36:49,780 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty
[2020-09-24 15:36:49,780 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_is_err
[2020-09-24 15:36:49,780 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_err_ptr
[2020-09-24 15:36:49,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_ptr_err
[2020-09-24 15:36:49,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null
[2020-09-24 15:36:49,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc
[2020-09-24 15:36:49,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_initialize
[2020-09-24 15:36:49,781 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_free
[2020-09-24 15:36:49,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int
[2020-09-24 15:36:49,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb
[2020-09-24 15:36:49,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb
[2020-09-24 15:36:49,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_skb_current
[2020-09-24 15:36:49,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure ldv_check_final_state
[2020-09-24 15:36:49,782 INFO  L138     BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any
[2020-09-24 15:36:49,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure __might_sleep
[2020-09-24 15:36:49,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol
[2020-09-24 15:36:49,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure capable
[2020-09-24 15:36:49,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure lapb_connect_request
[2020-09-24 15:36:49,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure lapb_data_received
[2020-09-24 15:36:49,783 INFO  L138     BoogieDeclarations]: Found implementation of procedure lapb_data_request
[2020-09-24 15:36:49,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request
[2020-09-24 15:36:49,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure lapb_register
[2020-09-24 15:36:49,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure lapb_unregister
[2020-09-24 15:36:49,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event
[2020-09-24 15:36:49,784 INFO  L138     BoogieDeclarations]: Found implementation of procedure netdev_err
[2020-09-24 15:36:49,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure pskb_expand_head
[2020-09-24 15:36:49,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol
[2020-09-24 15:36:49,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_clone
[2020-09-24 15:36:49,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_pull
[2020-09-24 15:36:49,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_push
[2020-09-24 15:36:49,785 INFO  L138     BoogieDeclarations]: Found implementation of procedure skb_put
[2020-09-24 15:36:49,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol
[2020-09-24 15:36:49,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure kfree
[2020-09-24 15:36:49,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2020-09-24 15:36:49,787 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 15:36:49,787 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv__builtin_expect
[2020-09-24 15:36:49,787 INFO  L130     BoogieDeclarations]: Found specification of procedure test_and_clear_bit
[2020-09-24 15:36:49,787 INFO  L130     BoogieDeclarations]: Found specification of procedure __might_sleep
[2020-09-24 15:36:49,787 INFO  L130     BoogieDeclarations]: Found specification of procedure atomic_read
[2020-09-24 15:36:49,787 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 15:36:49,788 INFO  L130     BoogieDeclarations]: Found specification of procedure capable
[2020-09-24 15:36:49,788 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6
[2020-09-24 15:36:49,788 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7
[2020-09-24 15:36:49,788 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8
[2020-09-24 15:36:49,788 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11
[2020-09-24 15:36:49,788 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_clone
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure pskb_expand_head
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_end_pointer
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_cloned
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_shared
[2020-09-24 15:36:49,789 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_share_check
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_put
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_push
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_pull
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_headroom
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_reset_mac_header
[2020-09-24 15:36:49,790 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 15:36:49,791 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12
[2020-09-24 15:36:49,791 INFO  L130     BoogieDeclarations]: Found specification of procedure __skb_cow
[2020-09-24 15:36:49,791 INFO  L130     BoogieDeclarations]: Found specification of procedure skb_cow
[2020-09-24 15:36:49,791 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_alloc
[2020-09-24 15:36:49,792 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_free
[2020-09-24 15:36:49,792 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_free_int
[2020-09-24 15:36:49,792 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 15:36:49,792 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-09-24 15:36:49,793 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 15:36:49,793 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong
[2020-09-24 15:36:49,794 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 15:36:49,794 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 15:36:49,794 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc
[2020-09-24 15:36:49,795 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 15:36:49,795 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2020-09-24 15:36:49,795 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_malloc
[2020-09-24 15:36:49,795 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_zalloc
[2020-09-24 15:36:49,795 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_int
[2020-09-24 15:36:49,799 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_undef_ulong
[2020-09-24 15:36:49,799 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_error
[2020-09-24 15:36:49,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_stop
[2020-09-24 15:36:49,803 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv__builtin_trap
[2020-09-24 15:36:49,803 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1
[2020-09-24 15:36:49,803 INFO  L130     BoogieDeclarations]: Found specification of procedure netdev_priv
[2020-09-24 15:36:49,803 INFO  L130     BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any
[2020-09-24 15:36:49,803 INFO  L130     BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any
[2020-09-24 15:36:49,804 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13
[2020-09-24 15:36:49,804 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14
[2020-09-24 15:36:49,804 INFO  L130     BoogieDeclarations]: Found specification of procedure linkwatch_fire_event
[2020-09-24 15:36:49,804 INFO  L130     BoogieDeclarations]: Found specification of procedure netif_dormant_off
[2020-09-24 15:36:49,809 INFO  L130     BoogieDeclarations]: Found specification of procedure netdev_err
[2020-09-24 15:36:49,809 INFO  L130     BoogieDeclarations]: Found specification of procedure register_hdlc_protocol
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure dev_to_hdlc
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure lapb_register
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure lapb_unregister
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure lapb_connect_request
[2020-09-24 15:36:49,810 INFO  L130     BoogieDeclarations]: Found specification of procedure lapb_disconnect_request
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure lapb_data_request
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure lapb_data_received
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_type_trans
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_ioctl
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_connect_disconnect
[2020-09-24 15:36:49,811 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_connected
[2020-09-24 15:36:49,812 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_disconnected
[2020-09-24 15:36:49,812 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_data_indication
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_data_transmit
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_xmit
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_open
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_close
[2020-09-24 15:36:49,813 INFO  L130     BoogieDeclarations]: Found specification of procedure x25_rx
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure mod_init
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure mod_exit
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_initialize
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_check_final_state
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 15:36:49,814 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_init
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_add
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_remove
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_contains
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_set_is_empty
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_is_err
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_err_ptr
[2020-09-24 15:36:49,815 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_ptr_err
[2020-09-24 15:36:49,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null
[2020-09-24 15:36:49,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb
[2020-09-24 15:36:49,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb
[2020-09-24 15:36:49,816 INFO  L130     BoogieDeclarations]: Found specification of procedure ldv_skb_current
[2020-09-24 15:36:49,817 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 15:36:49,817 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 15:36:49,817 INFO  L130     BoogieDeclarations]: Found specification of procedure kfree
[2020-09-24 15:36:49,817 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 15:36:49,817 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2020-09-24 15:36:49,818 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 15:36:50,359 INFO  L732   $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true;
[2020-09-24 15:36:51,479 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 15:36:51,479 INFO  L295             CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-24 15:36:51,496 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:36:51 BoogieIcfgContainer
[2020-09-24 15:36:51,496 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 15:36:51,498 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 15:36:51,499 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 15:36:51,503 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 15:36:51,503 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:36:47" (1/3) ...
[2020-09-24 15:36:51,505 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53494a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:36:51, skipping insertion in model container
[2020-09-24 15:36:51,505 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:49" (2/3) ...
[2020-09-24 15:36:51,505 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53494a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:36:51, skipping insertion in model container
[2020-09-24 15:36:51,506 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:36:51" (3/3) ...
[2020-09-24 15:36:51,509 INFO  L109   eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i
[2020-09-24 15:36:51,522 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 15:36:51,534 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 15:36:51,559 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 15:36:51,598 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 15:36:51,599 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 15:36:51,599 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 15:36:51,600 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 15:36:51,601 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 15:36:51,601 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 15:36:51,601 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 15:36:51,602 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 15:36:51,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 890 states.
[2020-09-24 15:36:51,685 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2020-09-24 15:36:51,685 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:36:51,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:36:51,687 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:36:51,697 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:36:51,697 INFO  L82        PathProgramCache]: Analyzing trace with hash 2033327711, now seen corresponding path program 1 times
[2020-09-24 15:36:51,709 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:36:51,709 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784876694]
[2020-09-24 15:36:51,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:36:52,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,342 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2020-09-24 15:36:52,344 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:36:52,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,418 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 15:36:52,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,448 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:36:52,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,463 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:36:52,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,483 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-09-24 15:36:52,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,491 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:36:52,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,503 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2020-09-24 15:36:52,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,510 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:36:52,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,520 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2020-09-24 15:36:52,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:52,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 15:36:52,583 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784876694]
[2020-09-24 15:36:52,585 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:36:52,585 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-24 15:36:52,586 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517233665]
[2020-09-24 15:36:52,593 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 15:36:52,593 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:36:52,610 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 15:36:52,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 15:36:52,614 INFO  L87              Difference]: Start difference. First operand 890 states. Second operand 7 states.
[2020-09-24 15:36:58,972 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:36:58,972 INFO  L93              Difference]: Finished difference Result 2373 states and 2824 transitions.
[2020-09-24 15:36:58,973 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2020-09-24 15:36:58,975 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 106
[2020-09-24 15:36:58,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:36:59,012 INFO  L225             Difference]: With dead ends: 2373
[2020-09-24 15:36:59,013 INFO  L226             Difference]: Without dead ends: 1687
[2020-09-24 15:36:59,025 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2020-09-24 15:36:59,047 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1687 states.
[2020-09-24 15:36:59,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1286.
[2020-09-24 15:36:59,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1286 states.
[2020-09-24 15:36:59,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1426 transitions.
[2020-09-24 15:36:59,248 INFO  L78                 Accepts]: Start accepts. Automaton has 1286 states and 1426 transitions. Word has length 106
[2020-09-24 15:36:59,249 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:36:59,249 INFO  L479      AbstractCegarLoop]: Abstraction has 1286 states and 1426 transitions.
[2020-09-24 15:36:59,249 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 15:36:59,250 INFO  L276                IsEmpty]: Start isEmpty. Operand 1286 states and 1426 transitions.
[2020-09-24 15:36:59,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2020-09-24 15:36:59,253 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:36:59,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:36:59,254 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 15:36:59,255 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:36:59,255 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:36:59,255 INFO  L82        PathProgramCache]: Analyzing trace with hash 594820322, now seen corresponding path program 1 times
[2020-09-24 15:36:59,255 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:36:59,256 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476629765]
[2020-09-24 15:36:59,256 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:36:59,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,504 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2020-09-24 15:36:59,505 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:36:59,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,568 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 15:36:59,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,609 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:36:59,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,623 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:36:59,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,643 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-09-24 15:36:59,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,653 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:36:59,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,668 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 15:36:59,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,708 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:36:59,709 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,720 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2020-09-24 15:36:59,721 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:36:59,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 15:36:59,752 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476629765]
[2020-09-24 15:36:59,752 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:36:59,752 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-24 15:36:59,753 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782786491]
[2020-09-24 15:36:59,754 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 15:36:59,755 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:36:59,755 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 15:36:59,755 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2020-09-24 15:36:59,755 INFO  L87              Difference]: Start difference. First operand 1286 states and 1426 transitions. Second operand 9 states.
[2020-09-24 15:37:00,739 WARN  L193               SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 102
[2020-09-24 15:37:03,942 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:37:03,942 INFO  L93              Difference]: Finished difference Result 2914 states and 3312 transitions.
[2020-09-24 15:37:03,943 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 15:37:03,943 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 114
[2020-09-24 15:37:03,944 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:37:03,959 INFO  L225             Difference]: With dead ends: 2914
[2020-09-24 15:37:03,960 INFO  L226             Difference]: Without dead ends: 1684
[2020-09-24 15:37:03,964 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380
[2020-09-24 15:37:03,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1684 states.
[2020-09-24 15:37:04,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1284.
[2020-09-24 15:37:04,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1284 states.
[2020-09-24 15:37:04,085 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1421 transitions.
[2020-09-24 15:37:04,086 INFO  L78                 Accepts]: Start accepts. Automaton has 1284 states and 1421 transitions. Word has length 114
[2020-09-24 15:37:04,087 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:37:04,087 INFO  L479      AbstractCegarLoop]: Abstraction has 1284 states and 1421 transitions.
[2020-09-24 15:37:04,087 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 15:37:04,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 1284 states and 1421 transitions.
[2020-09-24 15:37:04,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2020-09-24 15:37:04,097 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:37:04,098 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:37:04,098 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 15:37:04,098 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:37:04,099 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:37:04,099 INFO  L82        PathProgramCache]: Analyzing trace with hash 1356551308, now seen corresponding path program 1 times
[2020-09-24 15:37:04,099 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:37:04,099 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523817561]
[2020-09-24 15:37:04,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:37:04,188 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,538 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:04,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,590 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 15:37:04,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,621 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:04,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,634 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:04,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,655 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-09-24 15:37:04,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,673 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:04,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,692 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 15:37:04,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,707 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:04,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,742 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-09-24 15:37:04,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,791 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:04,793 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,808 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:04,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,819 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:04,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,829 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 15:37:04,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,897 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:04,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,918 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:04,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,931 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159
[2020-09-24 15:37:04,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,944 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:04,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:04,956 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169
[2020-09-24 15:37:04,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:05,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2020-09-24 15:37:05,049 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523817561]
[2020-09-24 15:37:05,050 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:37:05,050 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-24 15:37:05,050 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354637276]
[2020-09-24 15:37:05,052 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 15:37:05,052 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:37:05,052 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 15:37:05,053 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-09-24 15:37:05,053 INFO  L87              Difference]: Start difference. First operand 1284 states and 1421 transitions. Second operand 11 states.
[2020-09-24 15:37:05,516 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 15:37:11,449 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2020-09-24 15:37:12,425 WARN  L193               SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102
[2020-09-24 15:37:12,557 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 102
[2020-09-24 15:37:12,696 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 105
[2020-09-24 15:37:12,824 WARN  L193               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102
[2020-09-24 15:37:13,559 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:37:13,560 INFO  L93              Difference]: Finished difference Result 4261 states and 4945 transitions.
[2020-09-24 15:37:13,560 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. 
[2020-09-24 15:37:13,560 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 180
[2020-09-24 15:37:13,562 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:37:13,577 INFO  L225             Difference]: With dead ends: 4261
[2020-09-24 15:37:13,577 INFO  L226             Difference]: Without dead ends: 3014
[2020-09-24 15:37:13,582 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552
[2020-09-24 15:37:13,586 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3014 states.
[2020-09-24 15:37:13,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 2622.
[2020-09-24 15:37:13,729 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2622 states.
[2020-09-24 15:37:13,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 2971 transitions.
[2020-09-24 15:37:13,740 INFO  L78                 Accepts]: Start accepts. Automaton has 2622 states and 2971 transitions. Word has length 180
[2020-09-24 15:37:13,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:37:13,740 INFO  L479      AbstractCegarLoop]: Abstraction has 2622 states and 2971 transitions.
[2020-09-24 15:37:13,741 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 15:37:13,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 2622 states and 2971 transitions.
[2020-09-24 15:37:13,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2020-09-24 15:37:13,752 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:37:13,753 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:37:13,753 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 15:37:13,753 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:37:13,754 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:37:13,754 INFO  L82        PathProgramCache]: Analyzing trace with hash -766964387, now seen corresponding path program 1 times
[2020-09-24 15:37:13,754 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:37:13,754 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986532384]
[2020-09-24 15:37:13,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:37:13,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,022 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:14,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,077 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 15:37:14,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,107 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:14,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,120 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:14,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,144 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-09-24 15:37:14,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,154 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:14,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,167 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 15:37:14,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,177 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:14,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,216 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-09-24 15:37:14,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,267 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:14,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,291 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:14,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,302 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:14,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,314 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 15:37:14,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,331 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:14,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,343 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:14,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,387 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158
[2020-09-24 15:37:14,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,422 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 15:37:14,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,433 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:37:14,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,470 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:37:14,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,486 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-09-24 15:37:14,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,507 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2020-09-24 15:37:14,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,515 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:14,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,526 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2020-09-24 15:37:14,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:14,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2020-09-24 15:37:14,635 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986532384]
[2020-09-24 15:37:14,635 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:37:14,636 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-24 15:37:14,636 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284715773]
[2020-09-24 15:37:14,638 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 15:37:14,638 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:37:14,639 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 15:37:14,640 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-09-24 15:37:14,641 INFO  L87              Difference]: Start difference. First operand 2622 states and 2971 transitions. Second operand 10 states.
[2020-09-24 15:37:14,758 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97
[2020-09-24 15:37:21,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:37:21,547 INFO  L93              Difference]: Finished difference Result 8154 states and 9423 transitions.
[2020-09-24 15:37:21,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-09-24 15:37:21,548 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 245
[2020-09-24 15:37:21,549 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:37:21,576 INFO  L225             Difference]: With dead ends: 8154
[2020-09-24 15:37:21,576 INFO  L226             Difference]: Without dead ends: 5588
[2020-09-24 15:37:21,585 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342
[2020-09-24 15:37:21,592 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5588 states.
[2020-09-24 15:37:21,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 4812.
[2020-09-24 15:37:21,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4812 states.
[2020-09-24 15:37:21,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 5422 transitions.
[2020-09-24 15:37:21,870 INFO  L78                 Accepts]: Start accepts. Automaton has 4812 states and 5422 transitions. Word has length 245
[2020-09-24 15:37:21,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:37:21,870 INFO  L479      AbstractCegarLoop]: Abstraction has 4812 states and 5422 transitions.
[2020-09-24 15:37:21,871 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 15:37:21,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 4812 states and 5422 transitions.
[2020-09-24 15:37:21,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 246
[2020-09-24 15:37:21,885 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:37:21,886 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:37:21,886 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 15:37:21,886 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:37:21,886 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:37:21,887 INFO  L82        PathProgramCache]: Analyzing trace with hash -790465097, now seen corresponding path program 1 times
[2020-09-24 15:37:21,887 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:37:21,887 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889538522]
[2020-09-24 15:37:21,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:37:22,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,168 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:22,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,202 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 15:37:22,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,225 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:22,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,235 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:22,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,250 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-09-24 15:37:22,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,256 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:22,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,267 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 15:37:22,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,275 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:22,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,301 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-09-24 15:37:22,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,322 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:22,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,336 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:22,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,346 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:22,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,355 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 15:37:22,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,368 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:22,369 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,378 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:22,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,406 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2020-09-24 15:37:22,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,438 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 15:37:22,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,447 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:37:22,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,470 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:37:22,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,484 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-09-24 15:37:22,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,518 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224
[2020-09-24 15:37:22,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,524 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:22,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,533 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234
[2020-09-24 15:37:22,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:22,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked.
[2020-09-24 15:37:22,592 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889538522]
[2020-09-24 15:37:22,593 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:37:22,593 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-24 15:37:22,593 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923616173]
[2020-09-24 15:37:22,594 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 15:37:22,594 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:37:22,594 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 15:37:22,594 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2020-09-24 15:37:22,595 INFO  L87              Difference]: Start difference. First operand 4812 states and 5422 transitions. Second operand 10 states.
[2020-09-24 15:37:24,445 WARN  L193               SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 102
[2020-09-24 15:37:26,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:37:26,997 INFO  L93              Difference]: Finished difference Result 8105 states and 9476 transitions.
[2020-09-24 15:37:26,997 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 15:37:26,998 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 245
[2020-09-24 15:37:26,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:37:27,031 INFO  L225             Difference]: With dead ends: 8105
[2020-09-24 15:37:27,031 INFO  L226             Difference]: Without dead ends: 5544
[2020-09-24 15:37:27,048 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182
[2020-09-24 15:37:27,058 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5544 states.
[2020-09-24 15:37:27,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 4820.
[2020-09-24 15:37:27,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4820 states.
[2020-09-24 15:37:27,536 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 5430 transitions.
[2020-09-24 15:37:27,537 INFO  L78                 Accepts]: Start accepts. Automaton has 4820 states and 5430 transitions. Word has length 245
[2020-09-24 15:37:27,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:37:27,538 INFO  L479      AbstractCegarLoop]: Abstraction has 4820 states and 5430 transitions.
[2020-09-24 15:37:27,538 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 15:37:27,538 INFO  L276                IsEmpty]: Start isEmpty. Operand 4820 states and 5430 transitions.
[2020-09-24 15:37:27,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 250
[2020-09-24 15:37:27,559 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 15:37:27,560 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:37:27,560 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 15:37:27,560 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:37:27,561 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:37:27,561 INFO  L82        PathProgramCache]: Analyzing trace with hash -1475730443, now seen corresponding path program 1 times
[2020-09-24 15:37:27,561 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:37:27,562 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579946367]
[2020-09-24 15:37:27,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:37:27,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,003 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94
[2020-09-24 15:37:28,004 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:28,009 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,063 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 15:37:28,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,093 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:28,094 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,104 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:28,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,132 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-09-24 15:37:28,136 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,149 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:28,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,170 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2020-09-24 15:37:28,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,183 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:28,184 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,224 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101
[2020-09-24 15:37:28,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,289 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:28,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,307 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:28,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,323 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:28,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,335 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 15:37:28,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,360 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 15:37:28,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,372 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 15:37:28,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,414 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157
[2020-09-24 15:37:28,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,523 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 15:37:28,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,539 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 15:37:28,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 15:37:28,586 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,634 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2020-09-24 15:37:28,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,731 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228
[2020-09-24 15:37:28,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,739 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:37:28,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,765 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238
[2020-09-24 15:37:28,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:37:28,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked.
[2020-09-24 15:37:28,913 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579946367]
[2020-09-24 15:37:28,913 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:37:28,914 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-09-24 15:37:28,915 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632312829]
[2020-09-24 15:37:28,916 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-24 15:37:28,917 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:37:28,917 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-24 15:37:28,918 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156
[2020-09-24 15:37:28,919 INFO  L87              Difference]: Start difference. First operand 4820 states and 5430 transitions. Second operand 13 states.
[2020-09-24 15:37:29,123 WARN  L193               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 97
[2020-09-24 15:37:29,564 WARN  L193               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 15:37:31,747 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101
[2020-09-24 15:37:33,075 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100
[2020-09-24 15:37:33,314 WARN  L193               SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102
[2020-09-24 15:37:33,606 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-09-24 15:37:38,868 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:37:38,868 INFO  L93              Difference]: Finished difference Result 10988 states and 12651 transitions.
[2020-09-24 15:37:38,869 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2020-09-24 15:37:38,869 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 249
[2020-09-24 15:37:38,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:37:38,898 INFO  L225             Difference]: With dead ends: 10988
[2020-09-24 15:37:38,898 INFO  L226             Difference]: Without dead ends: 6224
[2020-09-24 15:37:38,911 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870
[2020-09-24 15:37:38,919 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6224 states.