/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 23:30:11,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:30:11,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:30:11,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:30:11,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:30:11,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:30:11,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:30:11,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:30:11,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:30:11,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:30:11,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:30:11,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:30:11,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:30:11,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:30:11,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:30:11,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:30:11,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:30:11,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:30:11,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:30:11,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:30:11,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:30:11,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:30:11,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:30:11,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:30:11,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:30:11,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:30:11,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:30:11,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:30:11,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:30:11,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:30:11,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:30:11,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:30:11,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:30:11,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:30:11,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:30:11,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:30:11,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:30:11,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:30:11,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:30:11,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:30:11,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:30:11,192 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 [2020-08-21 23:30:11,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:30:11,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:30:11,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:30:11,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:30:11,240 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:30:11,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:30:11,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:30:11,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:30:11,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:30:11,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:30:11,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:30:11,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:30:11,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:30:11,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:30:11,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:30:11,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:30:11,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:30:11,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:30:11,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:30:11,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:30:11,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:30:11,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:30:11,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:30:11,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:30:11,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:30:11,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:30:11,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 23:30:11,246 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 23:30:11,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:30:11,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:30:11,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:30:11,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:30:11,606 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:30:11,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 23:30:11,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e40925bd/d8fa3ce0867d4a4989477adc954f4fa3/FLAG2389c0567 [2020-08-21 23:30:12,531 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:30:12,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_x25.ko-entry_point.cil.out.i [2020-08-21 23:30:12,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e40925bd/d8fa3ce0867d4a4989477adc954f4fa3/FLAG2389c0567 [2020-08-21 23:30:13,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e40925bd/d8fa3ce0867d4a4989477adc954f4fa3 [2020-08-21 23:30:13,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:30:13,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:30:13,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:30:13,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:30:13,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:30:13,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:30:13" (1/1) ... [2020-08-21 23:30:13,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c563c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:13, skipping insertion in model container [2020-08-21 23:30:13,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:30:13" (1/1) ... [2020-08-21 23:30:13,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:30:13,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:30:14,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:30:14,589 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:30:14,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:30:15,025 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:30:15,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15 WrapperNode [2020-08-21 23:30:15,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:30:15,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:30:15,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:30:15,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:30:15,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (1/1) ... [2020-08-21 23:30:15,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:30:15,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:30:15,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:30:15,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:30:15,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (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 [2020-08-21 23:30:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:30:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:30:15,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 23:30:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 23:30:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2020-08-21 23:30:15,319 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2020-08-21 23:30:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2020-08-21 23:30:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2020-08-21 23:30:15,320 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_shared [2020-08-21 23:30:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_share_check [2020-08-21 23:30:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2020-08-21 23:30:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2020-08-21 23:30:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_cow [2020-08-21 23:30:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2020-08-21 23:30:15,321 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:30:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2020-08-21 23:30:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 23:30:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 23:30:15,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 23:30:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 23:30:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 23:30:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 23:30:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 23:30:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_off [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connect_disconnect [2020-08-21 23:30:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_connected [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_disconnected [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_indication [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_data_transmit [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_xmit [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_open [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_close [2020-08-21 23:30:15,325 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_rx [2020-08-21 23:30:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_ioctl [2020-08-21 23:30:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_init [2020-08-21 23:30:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_exit [2020-08-21 23:30:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 23:30:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:30:15,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2020-08-21 23:30:15,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_14 [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 23:30:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 23:30:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 23:30:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 23:30:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 23:30:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 23:30:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 23:30:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2020-08-21 23:30:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_hdlc_protocol [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2020-08-21 23:30:15,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2020-08-21 23:30:15,332 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2020-08-21 23:30:15,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2020-08-21 23:30:15,332 INFO L138 BoogieDeclarations]: Found implementation of procedure pskb_expand_head [2020-08-21 23:30:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure register_hdlc_protocol [2020-08-21 23:30:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_clone [2020-08-21 23:30:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2020-08-21 23:30:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2020-08-21 23:30:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2020-08-21 23:30:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hdlc_protocol [2020-08-21 23:30:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 23:30:15,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 23:30:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:30:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 23:30:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure skb_clone [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure pskb_expand_head [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:30:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_shared [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_share_check [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2020-08-21 23:30:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2020-08-21 23:30:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2020-08-21 23:30:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:30:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2020-08-21 23:30:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_cow [2020-08-21 23:30:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2020-08-21 23:30:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 23:30:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 23:30:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 23:30:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:30:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 23:30:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:30:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 23:30:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:30:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:30:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2020-08-21 23:30:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:30:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 23:30:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 23:30:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 23:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 23:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 23:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 23:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 23:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 23:30:15,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_hdlc_proto_1 [2020-08-21 23:30:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 23:30:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2020-08-21 23:30:15,348 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2020-08-21 23:30:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2020-08-21 23:30:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_14 [2020-08-21 23:30:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2020-08-21 23:30:15,349 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_off [2020-08-21 23:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2020-08-21 23:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure register_hdlc_protocol [2020-08-21 23:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hdlc_protocol [2020-08-21 23:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2020-08-21 23:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure attach_hdlc_protocol [2020-08-21 23:30:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2020-08-21 23:30:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2020-08-21 23:30:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2020-08-21 23:30:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2020-08-21 23:30:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2020-08-21 23:30:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2020-08-21 23:30:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2020-08-21 23:30:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:30:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure x25_ioctl [2020-08-21 23:30:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connect_disconnect [2020-08-21 23:30:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure x25_connected [2020-08-21 23:30:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_disconnected [2020-08-21 23:30:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_indication [2020-08-21 23:30:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_data_transmit [2020-08-21 23:30:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~netdev_tx_t~0 [2020-08-21 23:30:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_xmit [2020-08-21 23:30:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure x25_open [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_close [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure x25_rx [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure mod_init [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure mod_exit [2020-08-21 23:30:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 23:30:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 23:30:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:30:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 23:30:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:30:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 23:30:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:30:15,921 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 23:30:16,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:30:16,817 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 23:30:16,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:30:16 BoogieIcfgContainer [2020-08-21 23:30:16,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:30:16,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:30:16,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:30:16,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:30:16,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:30:13" (1/3) ... [2020-08-21 23:30:16,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9007bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:30:16, skipping insertion in model container [2020-08-21 23:30:16,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:30:15" (2/3) ... [2020-08-21 23:30:16,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9007bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:30:16, skipping insertion in model container [2020-08-21 23:30:16,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:30:16" (3/3) ... [2020-08-21 23:30:16,835 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 [2020-08-21 23:30:16,846 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:30:16,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:30:16,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:30:16,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:30:16,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:30:16,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:30:16,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:30:16,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:30:16,914 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:30:16,914 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:30:16,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:30:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states. [2020-08-21 23:30:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 23:30:16,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:16,979 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] [2020-08-21 23:30:16,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:16,987 INFO L82 PathProgramCache]: Analyzing trace with hash 856791813, now seen corresponding path program 1 times [2020-08-21 23:30:16,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:16,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432561765] [2020-08-21 23:30:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:30:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 23:30:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:30:17,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432561765] [2020-08-21 23:30:17,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:17,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:30:17,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70087118] [2020-08-21 23:30:17,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:30:17,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:30:17,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:30:17,787 INFO L87 Difference]: Start difference. First operand 477 states. Second operand 7 states. [2020-08-21 23:30:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:23,469 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-08-21 23:30:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:30:23,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-08-21 23:30:23,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:23,501 INFO L225 Difference]: With dead ends: 1386 [2020-08-21 23:30:23,501 INFO L226 Difference]: Without dead ends: 987 [2020-08-21 23:30:23,509 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 [2020-08-21 23:30:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-08-21 23:30:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 703. [2020-08-21 23:30:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 23:30:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2020-08-21 23:30:23,725 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 54 [2020-08-21 23:30:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:23,725 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2020-08-21 23:30:23,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:30:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2020-08-21 23:30:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 23:30:23,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:23,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:30:23,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:30:23,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash 226580861, now seen corresponding path program 1 times [2020-08-21 23:30:23,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:23,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385445906] [2020-08-21 23:30:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:30:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:30:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:30:24,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385445906] [2020-08-21 23:30:24,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:24,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:30:24,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496022394] [2020-08-21 23:30:24,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:30:24,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:24,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:30:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:30:24,211 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 9 states. [2020-08-21 23:30:27,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:27,942 INFO L93 Difference]: Finished difference Result 1673 states and 2071 transitions. [2020-08-21 23:30:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:30:27,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-21 23:30:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:27,954 INFO L225 Difference]: With dead ends: 1673 [2020-08-21 23:30:27,954 INFO L226 Difference]: Without dead ends: 986 [2020-08-21 23:30:27,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:30:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-08-21 23:30:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 702. [2020-08-21 23:30:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 23:30:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 839 transitions. [2020-08-21 23:30:28,074 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 839 transitions. Word has length 58 [2020-08-21 23:30:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:28,074 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 839 transitions. [2020-08-21 23:30:28,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:30:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 839 transitions. [2020-08-21 23:30:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 23:30:28,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:28,084 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] [2020-08-21 23:30:28,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:30:28,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1087478551, now seen corresponding path program 1 times [2020-08-21 23:30:28,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:28,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511004625] [2020-08-21 23:30:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:30:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:30:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 23:30:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 23:30:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-21 23:30:28,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511004625] [2020-08-21 23:30:28,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:28,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 23:30:28,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959660059] [2020-08-21 23:30:28,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:30:28,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:28,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:30:28,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:30:28,831 INFO L87 Difference]: Start difference. First operand 702 states and 839 transitions. Second operand 11 states. [2020-08-21 23:30:29,106 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-08-21 23:30:33,342 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-08-21 23:30:35,305 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-08-21 23:30:35,543 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-08-21 23:30:35,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:35,784 INFO L93 Difference]: Finished difference Result 2445 states and 3129 transitions. [2020-08-21 23:30:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 23:30:35,785 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-21 23:30:35,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:35,801 INFO L225 Difference]: With dead ends: 2445 [2020-08-21 23:30:35,801 INFO L226 Difference]: Without dead ends: 1743 [2020-08-21 23:30:35,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:30:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-08-21 23:30:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1469. [2020-08-21 23:30:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-08-21 23:30:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1818 transitions. [2020-08-21 23:30:36,060 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1818 transitions. Word has length 108 [2020-08-21 23:30:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:36,060 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1818 transitions. [2020-08-21 23:30:36,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:30:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1818 transitions. [2020-08-21 23:30:36,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 23:30:36,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:36,072 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] [2020-08-21 23:30:36,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:30:36,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1453768121, now seen corresponding path program 1 times [2020-08-21 23:30:36,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:36,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93468112] [2020-08-21 23:30:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:30:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:30:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 23:30:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:30:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 23:30:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 23:30:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 23:30:36,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93468112] [2020-08-21 23:30:36,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:36,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:30:36,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464142173] [2020-08-21 23:30:36,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:30:36,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:36,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:30:36,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:30:36,621 INFO L87 Difference]: Start difference. First operand 1469 states and 1818 transitions. Second operand 10 states. [2020-08-21 23:30:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:42,543 INFO L93 Difference]: Finished difference Result 4737 states and 6006 transitions. [2020-08-21 23:30:42,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:30:42,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 23:30:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:42,565 INFO L225 Difference]: With dead ends: 4737 [2020-08-21 23:30:42,565 INFO L226 Difference]: Without dead ends: 3284 [2020-08-21 23:30:42,572 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 [2020-08-21 23:30:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-08-21 23:30:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2727. [2020-08-21 23:30:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2727 states. [2020-08-21 23:30:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3337 transitions. [2020-08-21 23:30:42,856 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3337 transitions. Word has length 150 [2020-08-21 23:30:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:42,857 INFO L479 AbstractCegarLoop]: Abstraction has 2727 states and 3337 transitions. [2020-08-21 23:30:42,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:30:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3337 transitions. [2020-08-21 23:30:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 23:30:42,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:42,866 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] [2020-08-21 23:30:42,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:30:42,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash 385849721, now seen corresponding path program 1 times [2020-08-21 23:30:42,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:42,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255881841] [2020-08-21 23:30:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:30:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:30:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:30:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 23:30:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 23:30:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 23:30:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-08-21 23:30:43,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255881841] [2020-08-21 23:30:43,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:43,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:30:43,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261395934] [2020-08-21 23:30:43,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:30:43,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:43,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:30:43,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:30:43,330 INFO L87 Difference]: Start difference. First operand 2727 states and 3337 transitions. Second operand 10 states. [2020-08-21 23:30:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:47,127 INFO L93 Difference]: Finished difference Result 4462 states and 5539 transitions. [2020-08-21 23:30:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:30:47,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 23:30:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:47,140 INFO L225 Difference]: With dead ends: 4462 [2020-08-21 23:30:47,140 INFO L226 Difference]: Without dead ends: 1751 [2020-08-21 23:30:47,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-08-21 23:30:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2020-08-21 23:30:47,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1454. [2020-08-21 23:30:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-08-21 23:30:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1782 transitions. [2020-08-21 23:30:47,301 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1782 transitions. Word has length 150 [2020-08-21 23:30:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:47,301 INFO L479 AbstractCegarLoop]: Abstraction has 1454 states and 1782 transitions. [2020-08-21 23:30:47,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:30:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1782 transitions. [2020-08-21 23:30:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 23:30:47,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:47,308 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] [2020-08-21 23:30:47,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:30:47,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1808070535, now seen corresponding path program 2 times [2020-08-21 23:30:47,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:47,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548824475] [2020-08-21 23:30:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,558 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 23:30:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:30:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:30:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 23:30:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:30:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 23:30:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 23:30:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 23:30:47,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548824475] [2020-08-21 23:30:47,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:47,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:30:47,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223568113] [2020-08-21 23:30:47,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:30:47,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:47,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:30:47,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:30:47,867 INFO L87 Difference]: Start difference. First operand 1454 states and 1782 transitions. Second operand 10 states. [2020-08-21 23:30:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:50,630 INFO L93 Difference]: Finished difference Result 2489 states and 3208 transitions. [2020-08-21 23:30:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:30:50,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-08-21 23:30:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:50,647 INFO L225 Difference]: With dead ends: 2489 [2020-08-21 23:30:50,648 INFO L226 Difference]: Without dead ends: 1716 [2020-08-21 23:30:50,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:30:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2020-08-21 23:30:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1458. [2020-08-21 23:30:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1458 states. [2020-08-21 23:30:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1786 transitions. [2020-08-21 23:30:50,851 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1786 transitions. Word has length 150 [2020-08-21 23:30:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:50,853 INFO L479 AbstractCegarLoop]: Abstraction has 1458 states and 1786 transitions. [2020-08-21 23:30:50,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:30:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1786 transitions. [2020-08-21 23:30:50,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 23:30:50,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:50,859 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] [2020-08-21 23:30:50,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:30:50,859 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:50,859 INFO L82 PathProgramCache]: Analyzing trace with hash 464652536, now seen corresponding path program 1 times [2020-08-21 23:30:50,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:50,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546218307] [2020-08-21 23:30:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:30:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:30:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:30:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:30:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 23:30:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:30:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:30:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:30:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 23:30:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 23:30:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-08-21 23:30:51,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546218307] [2020-08-21 23:30:51,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:30:51,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 23:30:51,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594557307] [2020-08-21 23:30:51,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:30:51,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:30:51,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:30:51,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:30:51,463 INFO L87 Difference]: Start difference. First operand 1458 states and 1786 transitions. Second operand 13 states. [2020-08-21 23:30:53,501 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-08-21 23:30:54,829 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-21 23:30:55,072 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-08-21 23:30:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:30:59,305 INFO L93 Difference]: Finished difference Result 3355 states and 4229 transitions. [2020-08-21 23:30:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 23:30:59,306 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 23:30:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:30:59,319 INFO L225 Difference]: With dead ends: 3355 [2020-08-21 23:30:59,320 INFO L226 Difference]: Without dead ends: 1940 [2020-08-21 23:30:59,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-08-21 23:30:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-08-21 23:30:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1444. [2020-08-21 23:30:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-08-21 23:30:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1724 transitions. [2020-08-21 23:30:59,579 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1724 transitions. Word has length 152 [2020-08-21 23:30:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:30:59,580 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1724 transitions. [2020-08-21 23:30:59,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:30:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1724 transitions. [2020-08-21 23:30:59,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-08-21 23:30:59,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:30:59,590 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] [2020-08-21 23:30:59,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:30:59,590 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:30:59,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:30:59,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1292040904, now seen corresponding path program 1 times [2020-08-21 23:30:59,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:30:59,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561272342] [2020-08-21 23:30:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:30:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:30:59,956 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-08-21 23:30:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:30:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:31:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:31:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:31:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:31:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:31:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:31:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:31:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:31:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 23:31:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:31:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 23:31:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:31:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:31:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 23:31:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:31:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:31:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-21 23:31:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:31:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-21 23:31:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:31:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-08-21 23:31:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:31:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-08-21 23:31:00,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561272342] [2020-08-21 23:31:00,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:31:00,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 23:31:00,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847375664] [2020-08-21 23:31:00,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 23:31:00,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:31:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 23:31:00,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:31:00,959 INFO L87 Difference]: Start difference. First operand 1444 states and 1724 transitions. Second operand 15 states. [2020-08-21 23:31:01,111 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-08-21 23:31:01,483 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-08-21 23:31:01,845 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-08-21 23:31:03,867 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-08-21 23:31:05,323 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-08-21 23:31:05,571 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101