/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=SHALLOWEST -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 20:49:05,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:49:05,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:49:05,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:49:05,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:49:05,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:49:05,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:49:05,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:49:05,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:49:05,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:49:05,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:49:05,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:49:05,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:49:05,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:49:05,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:49:05,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:49:05,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:49:05,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:49:05,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:49:05,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:49:05,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:49:05,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:49:05,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:49:05,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:49:05,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:49:05,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:49:05,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:49:05,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:49:05,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:49:05,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:49:05,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:49:05,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:49:05,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:49:05,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:49:05,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:49:05,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:49:05,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:49:05,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:49:05,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:49:05,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:49:05,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:49:05,234 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 20:49:05,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:49:05,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:49:05,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:49:05,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:49:05,296 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:49:05,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:49:05,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:49:05,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:49:05,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:49:05,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:49:05,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:49:05,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:49:05,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:49:05,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:49:05,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:49:05,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:49:05,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:49:05,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:49:05,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:49:05,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:49:05,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:49:05,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:49:05,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:49:05,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:49:05,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:49:05,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:49:05,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 20:49:05,302 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:49:05,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:49:05,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:49:05,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:49:05,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:49:05,633 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:49:05,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 20:49:05,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd7f96507/7186c06eacf64c5dbeb81da0a290a4fe/FLAGd817e6230 [2020-08-18 20:49:06,428 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:49:06,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 20:49:06,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd7f96507/7186c06eacf64c5dbeb81da0a290a4fe/FLAGd817e6230 [2020-08-18 20:49:06,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd7f96507/7186c06eacf64c5dbeb81da0a290a4fe [2020-08-18 20:49:06,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:49:06,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:49:06,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:49:06,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:49:06,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:49:06,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:49:06" (1/1) ... [2020-08-18 20:49:06,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f82350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:06, skipping insertion in model container [2020-08-18 20:49:06,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:49:06" (1/1) ... [2020-08-18 20:49:06,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:49:06,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:49:08,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:49:08,175 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:49:08,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:49:08,560 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:49:08,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08 WrapperNode [2020-08-18 20:49:08,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:49:08,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:49:08,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:49:08,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:49:08,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... [2020-08-18 20:49:08,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:49:08,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:49:08,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:49:08,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:49:08,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:49:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:49:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:49:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 20:49:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 20:49:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 20:49:08,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 20:49:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 20:49:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 20:49:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 20:49:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 20:49:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 20:49:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 20:49:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 20:49:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 20:49:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:49:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 20:49:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 20:49:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 20:49:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 20:49:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 20:49:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 20:49:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 20:49:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 20:49:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 20:49:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 20:49:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 20:49:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 20:49:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 20:49:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 20:49:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 20:49:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 20:49:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 20:49:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 20:49:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 20:49:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 20:49:08,958 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 20:49:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 20:49:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 20:49:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 20:49:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 20:49:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 20:49:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 20:49:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 20:49:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 20:49:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 20:49:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 20:49:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 20:49:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 20:49:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 20:49:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 20:49:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 20:49:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 20:49:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 20:49:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 20:49:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 20:49:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 20:49:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 20:49:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 20:49:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 20:49:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 20:49:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 20:49:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 20:49:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 20:49:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 20:49:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 20:49:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 20:49:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 20:49:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 20:49:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 20:49:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 20:49:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 20:49:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 20:49:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 20:49:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 20:49:08,969 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 20:49:08,970 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 20:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 20:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 20:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 20:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 20:49:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 20:49:08,971 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:49:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 20:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 20:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 20:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 20:49:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 20:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 20:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 20:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 20:49:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 20:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 20:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 20:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 20:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:49:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 20:49:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:49:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:49:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 20:49:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:49:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 20:49:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 20:49:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 20:49:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 20:49:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 20:49:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 20:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 20:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 20:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 20:49:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 20:49:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 20:49:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 20:49:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 20:49:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 20:49:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 20:49:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 20:49:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 20:49:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 20:49:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 20:49:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 20:49:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 20:49:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 20:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 20:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 20:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 20:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 20:49:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 20:49:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 20:49:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 20:49:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 20:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 20:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 20:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 20:49:08,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:49:09,554 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 20:49:10,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:49:10,571 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 20:49:10,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:49:10 BoogieIcfgContainer [2020-08-18 20:49:10,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:49:10,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:49:10,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:49:10,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:49:10,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:49:06" (1/3) ... [2020-08-18 20:49:10,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a68c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:49:10, skipping insertion in model container [2020-08-18 20:49:10,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:49:08" (2/3) ... [2020-08-18 20:49:10,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a68c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:49:10, skipping insertion in model container [2020-08-18 20:49:10,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:49:10" (3/3) ... [2020-08-18 20:49:10,595 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 20:49:10,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:49:10,617 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:49:10,633 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:49:10,667 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:49:10,668 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:49:10,668 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:49:10,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:49:10,668 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:49:10,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:49:10,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:49:10,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:49:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 20:49:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 20:49:10,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:10,725 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 20:49:10,726 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 20:49:10,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:10,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091849456] [2020-08-18 20:49:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:49:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:49:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:11,456 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 20:49:11,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091849456] [2020-08-18 20:49:11,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:11,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:49:11,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566725803] [2020-08-18 20:49:11,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:49:11,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:11,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:49:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:49:11,487 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 20:49:11,632 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 20:49:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:16,652 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 20:49:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:49:16,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 20:49:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:16,685 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 20:49:16,686 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 20:49:16,695 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 20:49:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 20:49:16,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 20:49:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 20:49:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 20:49:16,893 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 20:49:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:16,894 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 20:49:16,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:49:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 20:49:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:49:16,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:16,899 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 20:49:16,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:49:16,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:16,901 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 20:49:16,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:16,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125010649] [2020-08-18 20:49:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:49:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:49:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:17,232 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 20:49:17,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125010649] [2020-08-18 20:49:17,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:17,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:49:17,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167103615] [2020-08-18 20:49:17,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:49:17,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:17,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:49:17,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:49:17,237 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 20:49:17,479 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 20:49:20,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:20,765 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 20:49:20,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:49:20,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 20:49:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:20,773 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 20:49:20,774 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 20:49:20,777 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 20:49:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 20:49:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 20:49:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 20:49:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 20:49:20,872 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 20:49:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:20,873 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 20:49:20,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:49:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 20:49:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 20:49:20,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:20,880 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 20:49:20,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:49:20,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 20:49:20,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:20,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542685320] [2020-08-18 20:49:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:49:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:49:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:49:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 20:49:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:21,352 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 20:49:21,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542685320] [2020-08-18 20:49:21,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:21,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:49:21,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316567945] [2020-08-18 20:49:21,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:49:21,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:21,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:49:21,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:49:21,355 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 20:49:21,618 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 20:49:27,512 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 20:49:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:27,921 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 20:49:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 20:49:27,922 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 20:49:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:27,936 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 20:49:27,936 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 20:49:27,939 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 20:49:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 20:49:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 20:49:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 20:49:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 20:49:28,148 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 20:49:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:28,149 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 20:49:28,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:49:28,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 20:49:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:49:28,163 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:28,164 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 20:49:28,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:49:28,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 20:49:28,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:28,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602988127] [2020-08-18 20:49:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:49:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:49:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 20:49:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:49:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 20:49:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 20:49:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:28,784 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 20:49:28,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602988127] [2020-08-18 20:49:28,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:28,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:49:28,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986581327] [2020-08-18 20:49:28,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:49:28,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:28,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:49:28,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:49:28,794 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 20:49:34,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:34,096 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 20:49:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:49:34,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 20:49:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:34,123 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 20:49:34,123 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 20:49:34,132 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 20:49:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 20:49:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 20:49:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 20:49:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 20:49:34,409 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 20:49:34,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:34,411 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 20:49:34,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:49:34,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 20:49:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:49:34,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:34,422 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 20:49:34,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:49:34,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:34,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:34,423 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 20:49:34,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:34,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867637388] [2020-08-18 20:49:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:49:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:49:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:49:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:49:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 20:49:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 20:49:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:34,838 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 20:49:34,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867637388] [2020-08-18 20:49:34,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:34,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:49:34,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173257205] [2020-08-18 20:49:34,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:49:34,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:34,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:49:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:49:34,842 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 20:49:35,152 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 20:49:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:38,225 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 20:49:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:49:38,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 20:49:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:38,239 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 20:49:38,239 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 20:49:38,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:49:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 20:49:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 20:49:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 20:49:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 20:49:38,384 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 20:49:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:38,384 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 20:49:38,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:49:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 20:49:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 20:49:38,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:38,389 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 20:49:38,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:49:38,389 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:38,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 20:49:38,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:38,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126748373] [2020-08-18 20:49:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:49:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:49:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:49:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:49:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 20:49:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 20:49:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:38,827 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 20:49:38,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126748373] [2020-08-18 20:49:38,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:38,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:49:38,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231843730] [2020-08-18 20:49:38,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:49:38,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:38,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:49:38,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:49:38,830 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 20:49:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:41,476 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 20:49:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:49:41,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 20:49:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:41,493 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 20:49:41,494 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 20:49:41,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:49:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 20:49:41,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 20:49:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 20:49:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 20:49:41,642 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 20:49:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:41,643 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 20:49:41,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:49:41,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 20:49:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 20:49:41,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:41,650 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, 1, 1] [2020-08-18 20:49:41,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:49:41,650 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:41,651 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 20:49:41,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:41,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919152055] [2020-08-18 20:49:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:49:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:49:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:49:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:49:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 20:49:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 20:49:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,241 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 20:49:42,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919152055] [2020-08-18 20:49:42,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:42,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 20:49:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019268031] [2020-08-18 20:49:42,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:49:42,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:42,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:49:42,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:49:42,244 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 20:49:44,064 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 20:49:45,221 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 20:49:45,430 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 20:49:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:48,964 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 20:49:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:49:48,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 20:49:48,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:48,983 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 20:49:48,984 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 20:49:48,989 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 20:49:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 20:49:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 20:49:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 20:49:49,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 20:49:49,139 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 20:49:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:49,140 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 20:49:49,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:49:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 20:49:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 20:49:49,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:49,146 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 20:49:49,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:49:49,147 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 20:49:49,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:49,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677547701] [2020-08-18 20:49:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:49:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:49:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:49:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 20:49:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:49:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:49:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:49:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 20:49:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:49,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:50,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 20:49:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:50,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 20:49:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:50,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 20:49:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:50,171 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 20:49:50,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677547701] [2020-08-18 20:49:50,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:50,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 20:49:50,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636814746] [2020-08-18 20:49:50,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 20:49:50,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 20:49:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:49:50,174 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 20:49:50,434 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 20:49:50,643 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 20:49:52,257 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 20:49:53,669 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 20:49:53,879 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 20:49:58,480 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 20:49:58,710 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103