/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=LOWLEXORDER -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 [2020-08-18 19:12:23,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:12:23,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:12:23,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:12:23,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:12:23,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:12:23,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:12:23,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:12:23,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:12:23,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:12:23,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:12:23,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:12:23,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:12:23,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:12:23,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:12:23,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:12:23,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:12:23,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:12:23,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:12:23,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:12:23,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:12:23,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:12:23,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:12:23,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:12:23,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:12:23,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:12:23,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:12:23,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:12:23,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:12:23,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:12:23,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:12:23,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:12:23,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:12:23,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:12:23,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:12:23,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:12:23,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:12:23,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:12:23,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:12:23,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:12:23,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:12:23,289 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 [2020-08-18 19:12:23,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:12:23,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:12:23,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:12:23,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:12:23,312 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:12:23,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:12:23,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:12:23,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:12:23,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:12:23,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:12:23,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:12:23,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:12:23,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:12:23,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:12:23,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:12:23,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:12:23,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:12:23,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:12:23,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:12:23,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:12:23,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:12:23,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:12:23,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:12:23,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:12:23,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:12:23,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:12:23,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 19:12:23,317 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 19:12:23,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:12:23,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:12:23,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:12:23,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:12:23,639 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:12:23,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 19:12:23,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbdb9f63e/1e4b6c0188fa499380a272860d2df3d3/FLAG00bab9d4d [2020-08-18 19:12:24,504 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:12:24,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 19:12:24,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbdb9f63e/1e4b6c0188fa499380a272860d2df3d3/FLAG00bab9d4d [2020-08-18 19:12:25,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbdb9f63e/1e4b6c0188fa499380a272860d2df3d3 [2020-08-18 19:12:25,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:12:25,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:12:25,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:12:25,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:12:25,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:12:25,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:12:25" (1/1) ... [2020-08-18 19:12:25,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117f8da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:25, skipping insertion in model container [2020-08-18 19:12:25,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:12:25" (1/1) ... [2020-08-18 19:12:25,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:12:25,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:12:26,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:12:26,681 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:12:26,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:12:26,924 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:12:26,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26 WrapperNode [2020-08-18 19:12:26,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:12:26,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:12:26,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:12:26,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:12:26,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:26,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:26,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:26,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:27,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:27,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:27,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (1/1) ... [2020-08-18 19:12:27,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:12:27,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:12:27,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:12:27,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:12:27,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (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 [2020-08-18 19:12:27,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:12:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:12:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 19:12:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 19:12:27,131 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 19:12:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 19:12:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 19:12:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 19:12:27,132 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 19:12:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 19:12:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 19:12:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 19:12:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 19:12:27,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 19:12:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:12:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 19:12:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 19:12:27,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 19:12:27,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 19:12:27,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 19:12:27,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 19:12:27,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 19:12:27,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 19:12:27,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 19:12:27,136 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 19:12:27,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 19:12:27,136 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 19:12:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 19:12:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 19:12:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 19:12:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 19:12:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 19:12:27,137 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 19:12:27,138 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 19:12:27,138 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 19:12:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 19:12:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 19:12:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 19:12:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 19:12:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 19:12:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 19:12:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 19:12:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:12:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 19:12:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 19:12:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 19:12:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 19:12:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 19:12:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 19:12:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 19:12:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 19:12:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 19:12:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 19:12:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 19:12:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 19:12:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 19:12:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 19:12:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 19:12:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 19:12:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 19:12:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 19:12:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 19:12:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 19:12:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 19:12:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 19:12:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 19:12:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 19:12:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 19:12:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 19:12:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 19:12:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 19:12:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 19:12:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 19:12:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 19:12:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 19:12:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 19:12:27,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 19:12:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:12:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 19:12:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 19:12:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 19:12:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 19:12:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 19:12:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 19:12:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:12:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 19:12:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 19:12:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 19:12:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 19:12:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 19:12:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:12:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 19:12:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 19:12:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:12:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 19:12:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 19:12:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 19:12:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 19:12:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 19:12:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 19:12:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 19:12:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 19:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 19:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 19:12:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 19:12:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 19:12:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 19:12:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 19:12:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 19:12:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 19:12:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 19:12:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 19:12:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 19:12:27,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 19:12:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 19:12:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 19:12:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:12:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 19:12:27,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:12:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 19:12:27,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:12:27,742 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 19:12:28,620 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:12:28,620 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 19:12:28,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:12:28 BoogieIcfgContainer [2020-08-18 19:12:28,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:12:28,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:12:28,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:12:28,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:12:28,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:12:25" (1/3) ... [2020-08-18 19:12:28,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3ebd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:12:28, skipping insertion in model container [2020-08-18 19:12:28,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:12:26" (2/3) ... [2020-08-18 19:12:28,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3ebd77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:12:28, skipping insertion in model container [2020-08-18 19:12:28,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:12:28" (3/3) ... [2020-08-18 19:12:28,645 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 [2020-08-18 19:12:28,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:12:28,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:12:28,679 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:12:28,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:12:28,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:12:28,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:12:28,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:12:28,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:12:28,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:12:28,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:12:28,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:12:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 19:12:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 19:12:28,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:28,750 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] [2020-08-18 19:12:28,751 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 19:12:28,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:28,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851251402] [2020-08-18 19:12:28,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 19:12:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 19:12:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:12:29,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851251402] [2020-08-18 19:12:29,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:29,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:12:29,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24660243] [2020-08-18 19:12:29,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:12:29,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:29,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:12:29,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:12:29,511 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 19:12:30,023 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 19:12:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:34,497 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 19:12:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:12:34,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 19:12:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:34,528 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 19:12:34,528 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 19:12:34,536 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 [2020-08-18 19:12:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 19:12:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 19:12:34,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 19:12:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 19:12:34,765 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 19:12:34,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:34,773 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 19:12:34,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:12:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 19:12:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 19:12:34,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:34,785 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] [2020-08-18 19:12:34,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:12:34,786 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:34,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:34,786 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 19:12:34,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:34,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240517278] [2020-08-18 19:12:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:12:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 19:12:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:12:35,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240517278] [2020-08-18 19:12:35,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:35,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 19:12:35,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098913635] [2020-08-18 19:12:35,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 19:12:35,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:35,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 19:12:35,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:12:35,130 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 19:12:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:38,584 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 19:12:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:12:38,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 19:12:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:38,593 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 19:12:38,593 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 19:12:38,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:12:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 19:12:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 19:12:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 19:12:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 19:12:38,691 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 19:12:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:38,692 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 19:12:38,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 19:12:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 19:12:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 19:12:38,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:38,696 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] [2020-08-18 19:12:38,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:12:38,697 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 19:12:38,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:38,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447159374] [2020-08-18 19:12:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:38,938 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 19:12:38,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:12:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:12:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 19:12:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 19:12:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-18 19:12:39,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447159374] [2020-08-18 19:12:39,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:39,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 19:12:39,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255950559] [2020-08-18 19:12:39,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 19:12:39,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:39,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 19:12:39,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 19:12:39,385 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 19:12:44,947 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 19:12:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:45,395 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 19:12:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 19:12:45,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 19:12:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:45,411 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 19:12:45,411 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 19:12:45,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:12:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 19:12:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 19:12:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 19:12:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 19:12:45,637 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 19:12:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:45,638 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 19:12:45,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 19:12:45,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 19:12:45,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:12:45,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:45,650 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] [2020-08-18 19:12:45,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:12:45,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:45,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 19:12:45,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:45,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882645755] [2020-08-18 19:12:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:12:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:12:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 19:12:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:12:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 19:12:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:12:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-18 19:12:46,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882645755] [2020-08-18 19:12:46,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:46,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:12:46,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004289177] [2020-08-18 19:12:46,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:12:46,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:46,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:12:46,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:12:46,164 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 19:12:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:51,147 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 19:12:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:12:51,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 19:12:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:51,172 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 19:12:51,173 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 19:12:51,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 19:12:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 19:12:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 19:12:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 19:12:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 19:12:51,460 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 19:12:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:51,460 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 19:12:51,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:12:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 19:12:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:12:51,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:51,470 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] [2020-08-18 19:12:51,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:12:51,470 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 19:12:51,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:51,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544816277] [2020-08-18 19:12:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 19:12:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:12:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 19:12:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:12:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 19:12:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:12:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-18 19:12:51,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544816277] [2020-08-18 19:12:51,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:51,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:12:51,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215588108] [2020-08-18 19:12:51,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:12:51,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:51,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:12:51,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:12:51,934 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 19:12:52,295 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-18 19:12:55,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:55,662 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 19:12:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 19:12:55,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 19:12:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:55,678 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 19:12:55,678 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 19:12:55,690 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 [2020-08-18 19:12:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 19:12:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 19:12:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 19:12:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 19:12:55,815 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 19:12:55,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:55,816 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 19:12:55,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:12:55,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 19:12:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 19:12:55,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:55,823 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] [2020-08-18 19:12:55,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:12:55,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:55,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 19:12:55,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:55,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49892343] [2020-08-18 19:12:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:55,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:12:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:12:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:12:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:12:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 19:12:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 19:12:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:56,327 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-18 19:12:56,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49892343] [2020-08-18 19:12:56,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:56,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 19:12:56,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154433548] [2020-08-18 19:12:56,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:12:56,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:56,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:12:56,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:12:56,330 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 19:12:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:12:58,917 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 19:12:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:12:58,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 19:12:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:12:58,933 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 19:12:58,933 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 19:12:58,936 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 [2020-08-18 19:12:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 19:12:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 19:12:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 19:12:59,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 19:12:59,078 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 19:12:59,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:12:59,079 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 19:12:59,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:12:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 19:12:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 19:12:59,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:12:59,084 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] [2020-08-18 19:12:59,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:12:59,084 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:12:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:12:59,085 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 19:12:59,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:12:59,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000924288] [2020-08-18 19:12:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:12:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:12:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:12:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:12:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:12:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:12:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:12:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:12:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:12:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 19:12:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:12:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 19:12:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:12:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-18 19:12:59,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000924288] [2020-08-18 19:12:59,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:12:59,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 19:12:59,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329261668] [2020-08-18 19:12:59,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 19:12:59,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:12:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 19:12:59,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 19:12:59,696 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 19:13:01,624 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 19:13:02,708 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 19:13:02,909 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 19:13:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:13:06,633 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 19:13:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 19:13:06,634 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 19:13:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:13:06,653 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 19:13:06,653 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 19:13:06,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-18 19:13:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 19:13:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 19:13:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 19:13:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 19:13:06,884 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 19:13:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:13:06,885 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 19:13:06,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 19:13:06,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 19:13:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 19:13:06,895 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:13:06,896 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] [2020-08-18 19:13:06,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:13:06,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:13:06,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:13:06,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 19:13:06,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:13:06,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379058704] [2020-08-18 19:13:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:13:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,204 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 19:13:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 19:13:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 19:13:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 19:13:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 19:13:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 19:13:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:13:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 19:13:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 19:13:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 19:13:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 19:13:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 19:13:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 19:13:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 19:13:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:13:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 19:13:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:13:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-18 19:13:08,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379058704] [2020-08-18 19:13:08,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:13:08,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 19:13:08,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713851036] [2020-08-18 19:13:08,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 19:13:08,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:13:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 19:13:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 19:13:08,165 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 19:13:08,291 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 19:13:08,613 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 19:13:08,944 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 19:13:10,724 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 19:13:12,068 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 19:13:12,262 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 19:13:16,840 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 19:13:17,062 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103