/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-19 00:02:44,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:02:44,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:02:44,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:02:44,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:02:44,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:02:44,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:02:44,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:02:44,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:02:44,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:02:44,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:02:44,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:02:44,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:02:44,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:02:44,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:02:44,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:02:44,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:02:44,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:02:44,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:02:44,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:02:44,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:02:44,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:02:44,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:02:44,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:02:44,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:02:44,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:02:44,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:02:44,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:02:44,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:02:44,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:02:44,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:02:44,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:02:44,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:02:44,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:02:44,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:02:44,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:02:44,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:02:44,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:02:44,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:02:44,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:02:44,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:02:44,651 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-19 00:02:44,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:02:44,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:02:44,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:02:44,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:02:44,677 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:02:44,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:02:44,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:02:44,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:02:44,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:02:44,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:02:44,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:02:44,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:02:44,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:02:44,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:02:44,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:02:44,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:02:44,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:02:44,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:02:44,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:02:44,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:02:44,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:02:44,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:02:44,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:02:44,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:02:44,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:02:44,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:02:44,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 00:02:44,682 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-19 00:02:44,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:02:45,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:02:45,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:02:45,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:02:45,016 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:02:45,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 00:02:45,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316bbb7bd/f6ade5178e894eeba78e468433ed7e1f/FLAG1b099a404 [2020-08-19 00:02:45,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:02:45,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-19 00:02:45,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316bbb7bd/f6ade5178e894eeba78e468433ed7e1f/FLAG1b099a404 [2020-08-19 00:02:45,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316bbb7bd/f6ade5178e894eeba78e468433ed7e1f [2020-08-19 00:02:45,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:02:45,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:02:45,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:02:45,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:02:46,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:02:46,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:02:45" (1/1) ... [2020-08-19 00:02:46,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:46, skipping insertion in model container [2020-08-19 00:02:46,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:02:45" (1/1) ... [2020-08-19 00:02:46,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:02:46,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:02:47,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:02:47,531 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:02:47,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:02:47,931 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:02:47,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47 WrapperNode [2020-08-19 00:02:47,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:02:47,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:02:47,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:02:47,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:02:47,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:47,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:47,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:47,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:48,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:48,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:48,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... [2020-08-19 00:02:48,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:02:48,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:02:48,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:02:48,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:02:48,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:02:48,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:02:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:02:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 00:02:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 00:02:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-19 00:02:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-19 00:02:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-19 00:02:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-19 00:02:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-19 00:02:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-19 00:02:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-19 00:02:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-19 00:02:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-19 00:02:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-19 00:02:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:02:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-19 00:02:48,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 00:02:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 00:02:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 00:02:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 00:02:48,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 00:02:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 00:02:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 00:02:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 00:02:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-19 00:02:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-19 00:02:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-19 00:02:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-19 00:02:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-19 00:02:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-19 00:02:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-19 00:02:48,197 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-19 00:02:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-19 00:02:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-19 00:02:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-19 00:02:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-19 00:02:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-19 00:02:48,198 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-19 00:02:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-19 00:02:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-19 00:02:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-19 00:02:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 00:02:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:02:48,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-19 00:02:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-19 00:02:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-19 00:02:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-19 00:02:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-19 00:02:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-19 00:02:48,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-19 00:02:48,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-19 00:02:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-19 00:02:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-19 00:02:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-19 00:02:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-19 00:02:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 00:02:48,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-19 00:02:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-19 00:02:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-19 00:02:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-19 00:02:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-19 00:02:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 00:02:48,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-19 00:02:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-19 00:02:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-19 00:02:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-19 00:02:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-19 00:02:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-19 00:02:48,204 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-19 00:02:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-19 00:02:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-19 00:02:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-19 00:02:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-19 00:02:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-19 00:02:48,205 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-19 00:02:48,206 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 00:02:48,207 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 00:02:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:02:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 00:02:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-19 00:02:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-19 00:02:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-19 00:02:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-19 00:02:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-19 00:02:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-19 00:02:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-19 00:02:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:02:48,209 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-19 00:02:48,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-19 00:02:48,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-19 00:02:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-19 00:02:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:02:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 00:02:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:02:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 00:02:48,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 00:02:48,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 00:02:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 00:02:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 00:02:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 00:02:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 00:02:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-19 00:02:48,214 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-19 00:02:48,215 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-19 00:02:48,216 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-19 00:02:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-19 00:02:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-19 00:02:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-19 00:02:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-19 00:02:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:02:48,217 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-19 00:02:48,218 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-19 00:02:48,219 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-19 00:02:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 00:02:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 00:02:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:02:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-19 00:02:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 00:02:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-19 00:02:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-19 00:02:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-19 00:02:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-19 00:02:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 00:02:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:02:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 00:02:48,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:02:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 00:02:48,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:02:48,799 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 00:02:49,590 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:02:49,591 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 00:02:49,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:02:49 BoogieIcfgContainer [2020-08-19 00:02:49,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:02:49,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:02:49,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:02:49,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:02:49,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:02:45" (1/3) ... [2020-08-19 00:02:49,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a490d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:02:49, skipping insertion in model container [2020-08-19 00:02:49,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:02:47" (2/3) ... [2020-08-19 00:02:49,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a490d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:02:49, skipping insertion in model container [2020-08-19 00:02:49,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:02:49" (3/3) ... [2020-08-19 00:02:49,607 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 [2020-08-19 00:02:49,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:02:49,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:02:49,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:02:49,669 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:02:49,670 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:02:49,670 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:02:49,670 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:02:49,670 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:02:49,670 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:02:49,670 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:02:49,670 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:02:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-19 00:02:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 00:02:49,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:02:49,731 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] [2020-08-19 00:02:49,732 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:02:49,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:02:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-19 00:02:49,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:02:49,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555087218] [2020-08-19 00:02:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:02:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,224 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-19 00:02:50,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:02:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:02:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:02:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:02:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:02:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:02:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:02:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:02:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 00:02:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:02:50,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555087218] [2020-08-19 00:02:50,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:02:50,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:02:50,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931694374] [2020-08-19 00:02:50,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:02:50,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:02:50,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:02:50,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:02:50,523 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-19 00:02:50,653 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 00:02:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:02:55,557 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-19 00:02:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:02:55,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-19 00:02:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:02:55,586 INFO L225 Difference]: With dead ends: 1386 [2020-08-19 00:02:55,586 INFO L226 Difference]: Without dead ends: 987 [2020-08-19 00:02:55,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:02:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-19 00:02:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-19 00:02:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 00:02:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-19 00:02:55,791 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-19 00:02:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:02:55,792 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-19 00:02:55,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:02:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-19 00:02:55,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 00:02:55,796 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:02:55,797 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] [2020-08-19 00:02:55,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:02:55,797 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:02:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:02:55,798 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-19 00:02:55,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:02:55,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251050902] [2020-08-19 00:02:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:02:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:02:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:02:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:02:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:02:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:02:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:02:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:02:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:02:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:02:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:02:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:02:56,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251050902] [2020-08-19 00:02:56,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:02:56,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:02:56,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993165399] [2020-08-19 00:02:56,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:02:56,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:02:56,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:02:56,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:02:56,133 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-19 00:02:56,266 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 00:02:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:02:59,602 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-19 00:02:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:02:59,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-19 00:02:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:02:59,615 INFO L225 Difference]: With dead ends: 1673 [2020-08-19 00:02:59,616 INFO L226 Difference]: Without dead ends: 986 [2020-08-19 00:02:59,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:02:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-19 00:02:59,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-19 00:02:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 00:02:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-19 00:02:59,744 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-19 00:02:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:02:59,745 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-19 00:02:59,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:02:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-19 00:02:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 00:02:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:02:59,752 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 00:02:59,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:02:59,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:02:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:02:59,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-19 00:02:59,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:02:59,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385517695] [2020-08-19 00:02:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:02:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:03:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:03:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:03:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 00:03:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 00:03:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-19 00:03:00,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385517695] [2020-08-19 00:03:00,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:03:00,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:03:00,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106549798] [2020-08-19 00:03:00,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:03:00,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:03:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:03:00,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:03:00,385 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-19 00:03:06,115 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-19 00:03:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:03:06,540 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-19 00:03:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 00:03:06,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 00:03:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:03:06,557 INFO L225 Difference]: With dead ends: 2445 [2020-08-19 00:03:06,557 INFO L226 Difference]: Without dead ends: 1743 [2020-08-19 00:03:06,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:03:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-19 00:03:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-19 00:03:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-19 00:03:06,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-19 00:03:06,713 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-19 00:03:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:03:06,714 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-19 00:03:06,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:03:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-19 00:03:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 00:03:06,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:03:06,722 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 00:03:06,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:03:06,722 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:03:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:03:06,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-19 00:03:06,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:03:06,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067609714] [2020-08-19 00:03:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:03:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:03:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:03:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:03:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 00:03:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:03:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 00:03:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 00:03:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 00:03:07,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067609714] [2020-08-19 00:03:07,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:03:07,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:03:07,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042305298] [2020-08-19 00:03:07,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:03:07,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:03:07,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:03:07,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:03:07,393 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-19 00:03:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:03:12,318 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-19 00:03:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:03:12,320 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 00:03:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:03:12,339 INFO L225 Difference]: With dead ends: 4737 [2020-08-19 00:03:12,340 INFO L226 Difference]: Without dead ends: 3284 [2020-08-19 00:03:12,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:03:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-19 00:03:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-19 00:03:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-19 00:03:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-19 00:03:12,613 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-19 00:03:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:03:12,614 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-19 00:03:12,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:03:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-19 00:03:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 00:03:12,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:03:12,626 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 00:03:12,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:03:12,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:03:12,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:03:12,627 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-19 00:03:12,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:03:12,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15984763] [2020-08-19 00:03:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:03:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:03:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:03:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:03:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:03:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:03:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 00:03:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 00:03:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-19 00:03:13,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15984763] [2020-08-19 00:03:13,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:03:13,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:03:13,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966493521] [2020-08-19 00:03:13,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:03:13,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:03:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:03:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:03:13,164 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-19 00:03:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:03:16,555 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-19 00:03:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:03:16,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 00:03:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:03:16,565 INFO L225 Difference]: With dead ends: 4462 [2020-08-19 00:03:16,566 INFO L226 Difference]: Without dead ends: 1751 [2020-08-19 00:03:16,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:03:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-19 00:03:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-19 00:03:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-19 00:03:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-19 00:03:16,703 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-19 00:03:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:03:16,704 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-19 00:03:16,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:03:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-19 00:03:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 00:03:16,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:03:16,710 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 00:03:16,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:03:16,710 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:03:16,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:03:16,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-19 00:03:16,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:03:16,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739623267] [2020-08-19 00:03:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:03:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:03:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:03:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:16,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:03:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:03:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:03:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 00:03:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 00:03:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 00:03:17,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739623267] [2020-08-19 00:03:17,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:03:17,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:03:17,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022251976] [2020-08-19 00:03:17,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:03:17,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:03:17,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:03:17,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:03:17,220 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-19 00:03:18,376 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-19 00:03:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:03:19,772 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-19 00:03:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:03:19,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-19 00:03:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:03:19,784 INFO L225 Difference]: With dead ends: 2489 [2020-08-19 00:03:19,785 INFO L226 Difference]: Without dead ends: 1716 [2020-08-19 00:03:19,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:03:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-19 00:03:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-19 00:03:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-19 00:03:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-19 00:03:19,935 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-19 00:03:19,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:03:19,935 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-19 00:03:19,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:03:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-19 00:03:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-19 00:03:19,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:03:19,940 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-19 00:03:19,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:03:19,941 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:03:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:03:19,941 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-19 00:03:19,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:03:19,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474032534] [2020-08-19 00:03:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:03:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:03:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:03:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:03:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:03:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:03:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 00:03:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 00:03:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-19 00:03:20,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474032534] [2020-08-19 00:03:20,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:03:20,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 00:03:20,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137271928] [2020-08-19 00:03:20,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:03:20,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:03:20,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:03:20,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:03:20,491 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-19 00:03:20,714 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-19 00:03:22,271 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 00:03:23,411 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 00:03:23,619 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 00:03:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:03:27,184 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-19 00:03:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:03:27,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-19 00:03:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:03:27,197 INFO L225 Difference]: With dead ends: 3355 [2020-08-19 00:03:27,197 INFO L226 Difference]: Without dead ends: 1940 [2020-08-19 00:03:27,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:03:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-19 00:03:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-19 00:03:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-19 00:03:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-19 00:03:27,449 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-19 00:03:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:03:27,450 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-19 00:03:27,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:03:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-19 00:03:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-19 00:03:27,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:03:27,460 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-08-19 00:03:27,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:03:27,461 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:03:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:03:27,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-19 00:03:27,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:03:27,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320984505] [2020-08-19 00:03:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:03:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:03:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:03:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:03:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 00:03:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:03:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:03:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:03:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 00:03:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:03:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:03:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 00:03:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:03:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 00:03:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:03:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-19 00:03:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:03:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-19 00:03:28,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320984505] [2020-08-19 00:03:28,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:03:28,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 00:03:28,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536168232] [2020-08-19 00:03:28,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:03:28,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:03:28,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:03:28,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:03:28,750 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-19 00:03:28,876 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-19 00:03:29,184 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-19 00:03:29,490 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-19 00:03:31,529 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-19 00:03:32,888 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-19 00:03:33,093 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-19 00:03:37,551 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-19 00:03:37,784 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103