/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=SMALLEST -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 12:39:21,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:39:21,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:39:21,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:39:21,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:39:21,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:39:21,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:39:21,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:39:21,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:39:21,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:39:21,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:39:21,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:39:21,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:39:21,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:39:21,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:39:21,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:39:21,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:39:21,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:39:21,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:39:21,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:39:21,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:39:21,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:39:21,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:39:21,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:39:21,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:39:21,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:39:21,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:39:21,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:39:21,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:39:21,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:39:21,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:39:21,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:39:21,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:39:21,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:39:21,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:39:21,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:39:21,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:39:21,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:39:21,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:39:21,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:39:21,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:39:21,577 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 12:39:21,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:39:21,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:39:21,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:39:21,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:39:21,618 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:39:21,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:39:21,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:39:21,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:39:21,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:39:21,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:39:21,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:39:21,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:39:21,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:39:21,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:39:21,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:39:21,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:39:21,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:39:21,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:39:21,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:39:21,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:39:21,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:39:21,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:39:21,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:39:21,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:39:21,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:39:21,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:39:21,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 12:39:21,625 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:39:21,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:39:21,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:39:21,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:39:21,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:39:21,965 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:39:21,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 12:39:22,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c60e54d67/9498fdb73d894467a97580d0f9f02497/FLAGb7b604ecb [2020-08-18 12:39:22,801 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:39:22,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-18 12:39:22,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c60e54d67/9498fdb73d894467a97580d0f9f02497/FLAGb7b604ecb [2020-08-18 12:39:23,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c60e54d67/9498fdb73d894467a97580d0f9f02497 [2020-08-18 12:39:23,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:39:23,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:39:23,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:39:23,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:39:23,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:39:23,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:39:23" (1/1) ... [2020-08-18 12:39:23,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427c53a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:23, skipping insertion in model container [2020-08-18 12:39:23,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:39:23" (1/1) ... [2020-08-18 12:39:23,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:39:23,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:39:24,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:39:24,672 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:39:24,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:39:24,971 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:39:24,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24 WrapperNode [2020-08-18 12:39:24,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:39:24,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:39:24,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:39:24,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:39:24,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:24,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:25,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:25,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:25,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:25,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:25,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (1/1) ... [2020-08-18 12:39:25,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:39:25,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:39:25,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:39:25,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:39:25,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (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 12:39:25,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:39:25,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:39:25,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 12:39:25,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 12:39:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-18 12:39:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-18 12:39:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-18 12:39:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-18 12:39:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-18 12:39:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-18 12:39:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-18 12:39:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-18 12:39:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-18 12:39:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-18 12:39:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:39:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-18 12:39:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 12:39:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 12:39:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 12:39:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 12:39:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 12:39:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 12:39:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 12:39:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 12:39:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 12:39:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-18 12:39:25,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-18 12:39:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-18 12:39:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-18 12:39:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-18 12:39:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-18 12:39:25,350 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-18 12:39:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-18 12:39:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-18 12:39:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-18 12:39:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-18 12:39:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-18 12:39:25,351 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-18 12:39:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-18 12:39:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-18 12:39:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-18 12:39:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 12:39:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:39:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 12:39:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 12:39:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 12:39:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 12:39:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 12:39:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-18 12:39:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-18 12:39:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-18 12:39:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 12:39:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 12:39:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 12:39:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 12:39:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 12:39:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 12:39:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 12:39:25,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 12:39:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 12:39:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 12:39:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 12:39:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 12:39:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 12:39:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 12:39:25,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 12:39:25,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 12:39:25,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 12:39:25,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-18 12:39:25,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-18 12:39:25,357 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-18 12:39:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-18 12:39:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-18 12:39:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-18 12:39:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-18 12:39:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-18 12:39:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-18 12:39:25,359 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-18 12:39:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-18 12:39:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-18 12:39:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-18 12:39:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-18 12:39:25,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-18 12:39:25,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-18 12:39:25,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-18 12:39:25,363 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-18 12:39:25,363 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-18 12:39:25,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 12:39:25,364 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 12:39:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:39:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 12:39:25,367 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 12:39:25,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 12:39:25,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 12:39:25,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 12:39:25,369 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-18 12:39:25,369 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-18 12:39:25,369 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-18 12:39:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:39:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-18 12:39:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-18 12:39:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-18 12:39:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:39:25,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-18 12:39:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-18 12:39:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-18 12:39:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-18 12:39:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-18 12:39:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:39:25,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-18 12:39:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-18 12:39:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-18 12:39:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 12:39:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 12:39:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 12:39:25,372 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:39:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 12:39:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:39:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 12:39:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:39:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:39:25,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-18 12:39:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:39:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 12:39:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 12:39:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 12:39:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 12:39:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 12:39:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 12:39:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 12:39:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 12:39:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-18 12:39:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 12:39:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-18 12:39:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-18 12:39:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-18 12:39:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-18 12:39:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-18 12:39:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-18 12:39:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-18 12:39:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-18 12:39:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-18 12:39:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-18 12:39:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-18 12:39:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-18 12:39:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-18 12:39:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-18 12:39:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-18 12:39:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-18 12:39:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-18 12:39:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-18 12:39:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:39:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-18 12:39:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-18 12:39:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-18 12:39:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-18 12:39:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-18 12:39:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-18 12:39:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-18 12:39:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-18 12:39:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-18 12:39:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 12:39:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 12:39:25,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:39:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 12:39:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 12:39:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 12:39:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 12:39:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 12:39:25,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 12:39:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 12:39:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 12:39:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 12:39:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 12:39:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 12:39:25,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 12:39:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 12:39:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:39:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 12:39:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:39:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 12:39:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:39:25,893 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 12:39:26,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:39:26,689 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 12:39:26,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:39:26 BoogieIcfgContainer [2020-08-18 12:39:26,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:39:26,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:39:26,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:39:26,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:39:26,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:39:23" (1/3) ... [2020-08-18 12:39:26,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a08d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:39:26, skipping insertion in model container [2020-08-18 12:39:26,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:24" (2/3) ... [2020-08-18 12:39:26,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a08d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:39:26, skipping insertion in model container [2020-08-18 12:39:26,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:39:26" (3/3) ... [2020-08-18 12:39:26,705 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 12:39:26,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:39:26,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:39:26,740 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:39:26,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:39:26,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:39:26,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:39:26,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:39:26,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:39:26,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:39:26,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:39:26,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:39:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-18 12:39:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 12:39:26,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:26,810 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 12:39:26,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:26,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:26,817 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-18 12:39:26,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:26,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062907449] [2020-08-18 12:39:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:39:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 12:39:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:27,538 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 12:39:27,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062907449] [2020-08-18 12:39:27,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:27,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:39:27,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749462329] [2020-08-18 12:39:27,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:39:27,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:27,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:39:27,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:39:27,576 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-18 12:39:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:32,784 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-18 12:39:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:39:32,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-18 12:39:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:32,819 INFO L225 Difference]: With dead ends: 1386 [2020-08-18 12:39:32,819 INFO L226 Difference]: Without dead ends: 987 [2020-08-18 12:39:32,829 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 12:39:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-18 12:39:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-18 12:39:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 12:39:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-18 12:39:33,031 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-18 12:39:33,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:33,032 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-18 12:39:33,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:39:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-18 12:39:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 12:39:33,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:33,050 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 12:39:33,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:39:33,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:33,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:33,054 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-18 12:39:33,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:33,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153259915] [2020-08-18 12:39:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:39:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:39:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:33,426 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 12:39:33,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153259915] [2020-08-18 12:39:33,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:33,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:39:33,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221442499] [2020-08-18 12:39:33,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:39:33,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:33,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:39:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:39:33,430 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-18 12:39:33,696 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-18 12:39:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:36,840 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-18 12:39:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:39:36,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-18 12:39:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:36,860 INFO L225 Difference]: With dead ends: 1673 [2020-08-18 12:39:36,861 INFO L226 Difference]: Without dead ends: 986 [2020-08-18 12:39:36,865 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 12:39:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-18 12:39:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-18 12:39:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-18 12:39:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-18 12:39:37,028 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-18 12:39:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:37,028 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-18 12:39:37,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:39:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-18 12:39:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 12:39:37,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:37,036 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 12:39:37,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:39:37,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:37,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-18 12:39:37,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:37,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143650778] [2020-08-18 12:39:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:39:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:39:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 12:39:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 12:39:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:37,700 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 12:39:37,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143650778] [2020-08-18 12:39:37,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:37,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:39:37,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963689271] [2020-08-18 12:39:37,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:39:37,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:39:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:37,702 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-18 12:39:43,200 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-18 12:39:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:43,651 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-18 12:39:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-18 12:39:43,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 12:39:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:43,663 INFO L225 Difference]: With dead ends: 2445 [2020-08-18 12:39:43,663 INFO L226 Difference]: Without dead ends: 1743 [2020-08-18 12:39:43,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-18 12:39:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-18 12:39:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-18 12:39:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-18 12:39:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-18 12:39:43,814 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-18 12:39:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:43,816 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-18 12:39:43,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:39:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-18 12:39:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 12:39:43,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:43,828 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 12:39:43,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:39:43,828 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-18 12:39:43,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:43,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32494687] [2020-08-18 12:39:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:39:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:39:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 12:39:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:39:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 12:39:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 12:39:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,413 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 12:39:44,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32494687] [2020-08-18 12:39:44,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:44,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:39:44,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35601506] [2020-08-18 12:39:44,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:39:44,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:44,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:39:44,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:39:44,420 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-18 12:39:45,585 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-08-18 12:39:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:49,257 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-18 12:39:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:39:49,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 12:39:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:49,281 INFO L225 Difference]: With dead ends: 4737 [2020-08-18 12:39:49,282 INFO L226 Difference]: Without dead ends: 3284 [2020-08-18 12:39:49,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 12:39:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-18 12:39:49,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-18 12:39:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-18 12:39:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-18 12:39:49,586 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-18 12:39:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:49,589 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-18 12:39:49,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:39:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-18 12:39:49,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 12:39:49,600 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:49,601 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 12:39:49,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:39:49,601 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-18 12:39:49,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:49,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898520022] [2020-08-18 12:39:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 12:39:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:39:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 12:39:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:39:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 12:39:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 12:39:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:50,079 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 12:39:50,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898520022] [2020-08-18 12:39:50,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:50,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:39:50,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783574847] [2020-08-18 12:39:50,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:39:50,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:39:50,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:39:50,084 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-18 12:39:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:53,610 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-18 12:39:53,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:39:53,611 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 12:39:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:53,621 INFO L225 Difference]: With dead ends: 4462 [2020-08-18 12:39:53,621 INFO L226 Difference]: Without dead ends: 1751 [2020-08-18 12:39:53,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-18 12:39:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-18 12:39:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-18 12:39:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-18 12:39:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-18 12:39:53,759 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-18 12:39:53,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:53,759 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-18 12:39:53,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:39:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-18 12:39:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 12:39:53,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:53,764 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 12:39:53,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:39:53,764 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:53,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-18 12:39:53,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:53,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250851665] [2020-08-18 12:39:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:39:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:39:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:39:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:39:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-18 12:39:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 12:39:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:54,248 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 12:39:54,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250851665] [2020-08-18 12:39:54,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:54,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:39:54,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372563432] [2020-08-18 12:39:54,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:39:54,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:54,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:39:54,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:39:54,251 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-18 12:39:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:56,824 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-18 12:39:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:39:56,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-18 12:39:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:56,839 INFO L225 Difference]: With dead ends: 2489 [2020-08-18 12:39:56,839 INFO L226 Difference]: Without dead ends: 1716 [2020-08-18 12:39:56,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:39:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-18 12:39:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-18 12:39:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-18 12:39:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-18 12:39:56,981 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-18 12:39:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:56,982 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-18 12:39:56,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:39:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-18 12:39:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-18 12:39:56,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:56,986 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 12:39:56,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:39:56,987 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-18 12:39:56,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:56,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630961723] [2020-08-18 12:39:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:39:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:39:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:39:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:39:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:39:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:39:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 12:39:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 12:39:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,552 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 12:39:57,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630961723] [2020-08-18 12:39:57,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:57,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 12:39:57,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577511959] [2020-08-18 12:39:57,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:39:57,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:57,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:39:57,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:39:57,556 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-18 12:39:59,428 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 12:40:00,534 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 12:40:00,743 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 12:40:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:04,421 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-18 12:40:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 12:40:04,422 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-18 12:40:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:04,441 INFO L225 Difference]: With dead ends: 3355 [2020-08-18 12:40:04,441 INFO L226 Difference]: Without dead ends: 1940 [2020-08-18 12:40:04,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-18 12:40:04,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-18 12:40:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-18 12:40:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-18 12:40:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-18 12:40:04,668 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-18 12:40:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:04,669 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-18 12:40:04,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:40:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-18 12:40:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-18 12:40:04,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:04,679 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 12:40:04,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:40:04,679 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-18 12:40:04,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:04,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566543267] [2020-08-18 12:40:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,021 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-18 12:40:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:40:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:40:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 12:40:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:40:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 12:40:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:40:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:40:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 12:40:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 12:40:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-18 12:40:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-18 12:40:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:06,000 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 12:40:06,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566543267] [2020-08-18 12:40:06,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:06,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 12:40:06,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846978063] [2020-08-18 12:40:06,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:40:06,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:06,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:40:06,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:40:06,003 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-18 12:40:06,131 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-18 12:40:06,464 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-18 12:40:06,796 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-18 12:40:08,744 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-18 12:40:10,114 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-18 12:40:10,326 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-18 12:40:14,893 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-18 12:40:15,119 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-08-18 12:40:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:18,381 INFO L93 Difference]: Finished difference Result 3441 states and 4458 transitions. [2020-08-18 12:40:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 12:40:18,382 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2020-08-18 12:40:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:18,397 INFO L225 Difference]: With dead ends: 3441 [2020-08-18 12:40:18,397 INFO L226 Difference]: Without dead ends: 2674 [2020-08-18 12:40:18,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 12:40:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-08-18 12:40:18,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1764. [2020-08-18 12:40:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-08-18 12:40:18,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2110 transitions. [2020-08-18 12:40:18,636 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2110 transitions. Word has length 197 [2020-08-18 12:40:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:18,637 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2110 transitions. [2020-08-18 12:40:18,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:40:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2110 transitions. [2020-08-18 12:40:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-08-18 12:40:18,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:18,643 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, 1, 1] [2020-08-18 12:40:18,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:40:18,644 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash -340207207, now seen corresponding path program 1 times [2020-08-18 12:40:18,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:18,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359566782] [2020-08-18 12:40:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat