/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.