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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:00:47,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:00:47,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:00:47,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:00:47,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:00:47,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:00:47,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:00:47,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:00:47,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:00:47,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:00:47,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:00:47,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:00:47,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:00:47,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:00:47,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:00:47,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:00:47,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:00:47,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:00:47,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:00:47,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:00:47,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:00:47,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:00:47,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:00:47,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:00:47,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:00:47,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:00:47,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:00:47,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:00:47,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:00:47,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:00:47,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:00:47,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:00:47,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:00:47,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:00:47,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:00:47,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:00:47,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:00:47,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:00:47,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:00:47,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:00:47,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:00:47,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:00:47,239 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:00:47,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:00:47,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:00:47,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:00:47,241 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:00:47,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:00:47,241 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:00:47,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:00:47,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:00:47,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:00:47,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:00:47,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:00:47,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:00:47,244 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:00:47,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:00:47,245 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:00:47,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:00:47,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:00:47,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:00:47,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:00:47,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:00:47,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:00:47,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:00:47,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:00:47,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:00:47,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:00:47,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:00:47,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:00:47,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:00:47,536 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:00:47,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:00:47,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:00:47,555 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:00:47,555 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:00:47,557 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-14 23:00:47,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0044e86c/6ccf94a0876f4385a03b6f942e30ca91/FLAG510b78aeb [2019-10-14 23:00:48,357 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:00:48,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-14 23:00:48,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0044e86c/6ccf94a0876f4385a03b6f942e30ca91/FLAG510b78aeb [2019-10-14 23:00:48,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0044e86c/6ccf94a0876f4385a03b6f942e30ca91 [2019-10-14 23:00:48,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:00:48,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:00:48,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:00:48,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:00:48,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:00:48,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:00:48" (1/1) ... [2019-10-14 23:00:48,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709a20b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:48, skipping insertion in model container [2019-10-14 23:00:48,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:00:48" (1/1) ... [2019-10-14 23:00:48,541 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:00:48,648 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:00:49,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:00:49,854 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:00:50,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:00:50,136 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:00:50,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50 WrapperNode [2019-10-14 23:00:50,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:00:50,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:00:50,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:00:50,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:00:50,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... [2019-10-14 23:00:50,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:00:50,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:00:50,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:00:50,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:00:50,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-14 23:00:50,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:00:50,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:00:50,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-10-14 23:00:50,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-14 23:00:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 23:00:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 23:00:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-14 23:00:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-14 23:00:50,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 23:00:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 23:00:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 23:00:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 23:00:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2019-10-14 23:00:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2019-10-14 23:00:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2019-10-14 23:00:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2019-10-14 23:00:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2019-10-14 23:00:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2019-10-14 23:00:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2019-10-14 23:00:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2019-10-14 23:00:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2019-10-14 23:00:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:00:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_5 [2019-10-14 23:00:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_6 [2019-10-14 23:00:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 23:00:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-14 23:00:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-14 23:00:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-14 23:00:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-14 23:00:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-10-14 23:00:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2019-10-14 23:00:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2019-10-14 23:00:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 23:00:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 23:00:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 23:00:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 23:00:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:00:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_5 [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_6 [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-10-14 23:00:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:00:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:00:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:00:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 23:00:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:00:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:00:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 23:00:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-14 23:00:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-14 23:00:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2019-10-14 23:00:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2019-10-14 23:00:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2019-10-14 23:00:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2019-10-14 23:00:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2019-10-14 23:00:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:00:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:00:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-10-14 23:00:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2019-10-14 23:00:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-14 23:00:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2019-10-14 23:00:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2019-10-14 23:00:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-14 23:00:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 23:00:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:00:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:00:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:00:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:00:51,128 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 23:00:51,146 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-10-14 23:00:51,438 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:00:51,438 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:00:51,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:00:51 BoogieIcfgContainer [2019-10-14 23:00:51,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:00:51,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:00:51,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:00:51,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:00:51,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:00:48" (1/3) ... [2019-10-14 23:00:51,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7610046e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:00:51, skipping insertion in model container [2019-10-14 23:00:51,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:50" (2/3) ... [2019-10-14 23:00:51,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7610046e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:00:51, skipping insertion in model container [2019-10-14 23:00:51,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:00:51" (3/3) ... [2019-10-14 23:00:51,457 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-14 23:00:51,465 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:00:51,473 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:00:51,482 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:00:51,505 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:00:51,505 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:00:51,505 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:00:51,505 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:00:51,505 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:00:51,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:00:51,506 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:00:51,506 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:00:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2019-10-14 23:00:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-14 23:00:51,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:00:51,539 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:00:51,541 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:00:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:00:51,547 INFO L82 PathProgramCache]: Analyzing trace with hash 945988663, now seen corresponding path program 1 times [2019-10-14 23:00:51,556 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:00:51,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736746975] [2019-10-14 23:00:51,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:51,557 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:51,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:00:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,286 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:00:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:00:52,546 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736746975] [2019-10-14 23:00:52,547 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:00:52,547 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:00:52,547 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411077669] [2019-10-14 23:00:52,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:00:52,552 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:00:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:00:52,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:00:52,570 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 7 states. [2019-10-14 23:00:52,764 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-14 23:00:53,299 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:00:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:00:54,274 INFO L93 Difference]: Finished difference Result 351 states and 450 transitions. [2019-10-14 23:00:54,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:00:54,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-10-14 23:00:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:00:54,292 INFO L225 Difference]: With dead ends: 351 [2019-10-14 23:00:54,293 INFO L226 Difference]: Without dead ends: 234 [2019-10-14 23:00:54,297 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:00:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-10-14 23:00:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 187. [2019-10-14 23:00:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-10-14 23:00:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2019-10-14 23:00:54,380 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 69 [2019-10-14 23:00:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:00:54,381 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2019-10-14 23:00:54,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:00:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2019-10-14 23:00:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-14 23:00:54,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:00:54,385 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:00:54,385 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:00:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:00:54,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1444090839, now seen corresponding path program 1 times [2019-10-14 23:00:54,386 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:00:54,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101981998] [2019-10-14 23:00:54,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:54,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:54,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:00:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,590 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:00:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:00:54,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101981998] [2019-10-14 23:00:54,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:00:54,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:00:54,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319181852] [2019-10-14 23:00:54,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:00:54,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:00:54,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:00:54,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:00:54,830 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand 7 states. [2019-10-14 23:00:54,963 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-14 23:00:55,184 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:00:55,354 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 23:00:55,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:00:55,977 INFO L93 Difference]: Finished difference Result 241 states and 291 transitions. [2019-10-14 23:00:55,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:00:55,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-14 23:00:55,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:00:55,981 INFO L225 Difference]: With dead ends: 241 [2019-10-14 23:00:55,981 INFO L226 Difference]: Without dead ends: 236 [2019-10-14 23:00:55,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:00:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-10-14 23:00:56,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 187. [2019-10-14 23:00:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-10-14 23:00:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 226 transitions. [2019-10-14 23:00:56,019 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 226 transitions. Word has length 74 [2019-10-14 23:00:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:00:56,019 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 226 transitions. [2019-10-14 23:00:56,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:00:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 226 transitions. [2019-10-14 23:00:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-14 23:00:56,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:00:56,021 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:00:56,022 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:00:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:00:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1501349141, now seen corresponding path program 1 times [2019-10-14 23:00:56,022 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:00:56,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699792495] [2019-10-14 23:00:56,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:56,023 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:56,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:00:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,286 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:00:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:00:56,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699792495] [2019-10-14 23:00:56,453 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:00:56,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:00:56,454 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288682273] [2019-10-14 23:00:56,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:00:56,454 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:00:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:00:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:00:56,455 INFO L87 Difference]: Start difference. First operand 187 states and 226 transitions. Second operand 7 states. [2019-10-14 23:00:56,641 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-14 23:00:56,841 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:00:57,008 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 23:00:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:00:58,076 INFO L93 Difference]: Finished difference Result 534 states and 669 transitions. [2019-10-14 23:00:58,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:00:58,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-14 23:00:58,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:00:58,082 INFO L225 Difference]: With dead ends: 534 [2019-10-14 23:00:58,082 INFO L226 Difference]: Without dead ends: 371 [2019-10-14 23:00:58,084 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:00:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-14 23:00:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361. [2019-10-14 23:00:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2019-10-14 23:00:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 449 transitions. [2019-10-14 23:00:58,136 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 449 transitions. Word has length 74 [2019-10-14 23:00:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:00:58,137 INFO L462 AbstractCegarLoop]: Abstraction has 361 states and 449 transitions. [2019-10-14 23:00:58,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:00:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 449 transitions. [2019-10-14 23:00:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:00:58,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:00:58,140 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:00:58,140 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:00:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:00:58,140 INFO L82 PathProgramCache]: Analyzing trace with hash -173204652, now seen corresponding path program 1 times [2019-10-14 23:00:58,141 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:00:58,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574196374] [2019-10-14 23:00:58,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:58,141 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:00:58,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:00:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,346 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:00:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:00:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:00:58,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574196374] [2019-10-14 23:00:58,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:00:58,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:00:58,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162107671] [2019-10-14 23:00:58,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:00:58,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:00:58,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:00:58,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:00:58,509 INFO L87 Difference]: Start difference. First operand 361 states and 449 transitions. Second operand 8 states. [2019-10-14 23:00:58,654 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-14 23:00:58,892 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:00:59,073 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 23:01:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:00,061 INFO L93 Difference]: Finished difference Result 783 states and 985 transitions. [2019-10-14 23:01:00,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:01:00,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-14 23:01:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:00,069 INFO L225 Difference]: With dead ends: 783 [2019-10-14 23:01:00,070 INFO L226 Difference]: Without dead ends: 456 [2019-10-14 23:01:00,076 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:01:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2019-10-14 23:01:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 437. [2019-10-14 23:01:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-10-14 23:01:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 549 transitions. [2019-10-14 23:01:00,132 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 549 transitions. Word has length 88 [2019-10-14 23:01:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:00,132 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 549 transitions. [2019-10-14 23:01:00,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:01:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 549 transitions. [2019-10-14 23:01:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:01:00,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:00,135 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:00,135 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:00,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:00,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1275114055, now seen corresponding path program 1 times [2019-10-14 23:01:00,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:00,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153597405] [2019-10-14 23:01:00,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:00,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:00,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,490 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:01:00,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153597405] [2019-10-14 23:01:00,852 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672502493] [2019-10-14 23:01:00,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:01:01,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:01:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:01,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:01:01,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-10-14 23:01:01,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824015101] [2019-10-14 23:01:01,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:01:01,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:01:01,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:01:01,279 INFO L87 Difference]: Start difference. First operand 437 states and 549 transitions. Second operand 7 states. [2019-10-14 23:01:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:01,351 INFO L93 Difference]: Finished difference Result 860 states and 1087 transitions. [2019-10-14 23:01:01,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:01:01,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-14 23:01:01,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:01,355 INFO L225 Difference]: With dead ends: 860 [2019-10-14 23:01:01,355 INFO L226 Difference]: Without dead ends: 457 [2019-10-14 23:01:01,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:01:01,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-10-14 23:01:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 429. [2019-10-14 23:01:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-14 23:01:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 535 transitions. [2019-10-14 23:01:01,406 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 535 transitions. Word has length 107 [2019-10-14 23:01:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:01,406 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 535 transitions. [2019-10-14 23:01:01,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:01:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 535 transitions. [2019-10-14 23:01:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-14 23:01:01,409 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:01,409 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:01,617 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:01,617 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash -4749623, now seen corresponding path program 1 times [2019-10-14 23:01:01,618 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:01,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769094075] [2019-10-14 23:01:01,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:01,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:01,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,862 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:01:02,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769094075] [2019-10-14 23:01:02,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903548427] [2019-10-14 23:01:02,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-14 23:01:02,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:01:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:02,341 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:01:02,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2019-10-14 23:01:02,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140257091] [2019-10-14 23:01:02,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:01:02,342 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:01:02,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:01:02,343 INFO L87 Difference]: Start difference. First operand 429 states and 535 transitions. Second operand 3 states. [2019-10-14 23:01:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:02,388 INFO L93 Difference]: Finished difference Result 805 states and 1020 transitions. [2019-10-14 23:01:02,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:01:02,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-14 23:01:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:02,392 INFO L225 Difference]: With dead ends: 805 [2019-10-14 23:01:02,392 INFO L226 Difference]: Without dead ends: 410 [2019-10-14 23:01:02,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:01:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2019-10-14 23:01:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 392. [2019-10-14 23:01:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-10-14 23:01:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 488 transitions. [2019-10-14 23:01:02,432 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 488 transitions. Word has length 107 [2019-10-14 23:01:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:02,433 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 488 transitions. [2019-10-14 23:01:02,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:01:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 488 transitions. [2019-10-14 23:01:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-14 23:01:02,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:02,435 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:02,639 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:02,640 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:02,640 INFO L82 PathProgramCache]: Analyzing trace with hash 549282891, now seen corresponding path program 1 times [2019-10-14 23:01:02,641 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:02,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682587829] [2019-10-14 23:01:02,641 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:02,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:02,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,886 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:03,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682587829] [2019-10-14 23:01:03,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:01:03,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:01:03,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43156996] [2019-10-14 23:01:03,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:01:03,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:01:03,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:01:03,141 INFO L87 Difference]: Start difference. First operand 392 states and 488 transitions. Second operand 11 states. [2019-10-14 23:01:03,339 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-14 23:01:03,547 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:01:03,747 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 23:01:04,559 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-14 23:01:05,673 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2019-10-14 23:01:06,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:06,003 INFO L93 Difference]: Finished difference Result 631 states and 784 transitions. [2019-10-14 23:01:06,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:01:06,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2019-10-14 23:01:06,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:06,007 INFO L225 Difference]: With dead ends: 631 [2019-10-14 23:01:06,008 INFO L226 Difference]: Without dead ends: 628 [2019-10-14 23:01:06,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:01:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-14 23:01:06,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 599. [2019-10-14 23:01:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-14 23:01:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 751 transitions. [2019-10-14 23:01:06,066 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 751 transitions. Word has length 113 [2019-10-14 23:01:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:06,066 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 751 transitions. [2019-10-14 23:01:06,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:01:06,066 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 751 transitions. [2019-10-14 23:01:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:01:06,069 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:06,070 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:06,070 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:06,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:06,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1039387099, now seen corresponding path program 1 times [2019-10-14 23:01:06,070 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:06,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15751215] [2019-10-14 23:01:06,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:06,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:06,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,262 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:06,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15751215] [2019-10-14 23:01:06,446 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:01:06,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:01:06,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69715183] [2019-10-14 23:01:06,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:01:06,447 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:01:06,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:01:06,448 INFO L87 Difference]: Start difference. First operand 599 states and 751 transitions. Second operand 8 states. [2019-10-14 23:01:06,588 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-14 23:01:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:07,594 INFO L93 Difference]: Finished difference Result 1047 states and 1312 transitions. [2019-10-14 23:01:07,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:01:07,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2019-10-14 23:01:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:07,600 INFO L225 Difference]: With dead ends: 1047 [2019-10-14 23:01:07,600 INFO L226 Difference]: Without dead ends: 625 [2019-10-14 23:01:07,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:01:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-14 23:01:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 599. [2019-10-14 23:01:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-14 23:01:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 747 transitions. [2019-10-14 23:01:07,655 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 747 transitions. Word has length 122 [2019-10-14 23:01:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:07,656 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 747 transitions. [2019-10-14 23:01:07,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:01:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 747 transitions. [2019-10-14 23:01:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 23:01:07,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:07,660 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:07,660 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:07,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1173400605, now seen corresponding path program 1 times [2019-10-14 23:01:07,661 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:07,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229498228] [2019-10-14 23:01:07,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:07,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:07,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,887 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:01:08,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229498228] [2019-10-14 23:01:08,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031859545] [2019-10-14 23:01:08,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:08,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 23:01:08,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:01:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:08,535 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:01:08,535 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 16 [2019-10-14 23:01:08,535 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147106186] [2019-10-14 23:01:08,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:01:08,536 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:08,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:01:08,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:01:08,536 INFO L87 Difference]: Start difference. First operand 599 states and 747 transitions. Second operand 7 states. [2019-10-14 23:01:08,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:08,607 INFO L93 Difference]: Finished difference Result 1025 states and 1278 transitions. [2019-10-14 23:01:08,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:01:08,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-14 23:01:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:08,611 INFO L225 Difference]: With dead ends: 1025 [2019-10-14 23:01:08,612 INFO L226 Difference]: Without dead ends: 603 [2019-10-14 23:01:08,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:01:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-14 23:01:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 597. [2019-10-14 23:01:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2019-10-14 23:01:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 741 transitions. [2019-10-14 23:01:08,672 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 741 transitions. Word has length 122 [2019-10-14 23:01:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:08,673 INFO L462 AbstractCegarLoop]: Abstraction has 597 states and 741 transitions. [2019-10-14 23:01:08,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:01:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 741 transitions. [2019-10-14 23:01:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-14 23:01:08,676 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:08,676 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:08,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:08,881 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1755090979, now seen corresponding path program 1 times [2019-10-14 23:01:08,882 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:08,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086974398] [2019-10-14 23:01:08,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:08,883 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:08,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,067 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:09,300 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086974398] [2019-10-14 23:01:09,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308127591] [2019-10-14 23:01:09,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:09,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-14 23:01:09,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:01:09,666 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,667 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,669 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,672 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,687 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2019-10-14 23:01:09,688 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:01:09,706 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:09,712 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,714 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,715 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,716 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,717 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,718 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,719 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:09,720 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 13 [2019-10-14 23:01:09,720 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:01:09,728 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:09,728 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:01:09,728 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:10 [2019-10-14 23:01:09,770 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,777 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,778 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,780 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,782 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2019-10-14 23:01:09,782 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:01:09,797 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:09,802 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,803 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,804 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,806 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:01:09,807 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:09,808 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 13 [2019-10-14 23:01:09,809 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:01:09,815 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:09,816 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:01:09,816 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:10 [2019-10-14 23:01:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:01:10,215 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:01:10,215 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2019-10-14 23:01:10,215 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655555836] [2019-10-14 23:01:10,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:01:10,216 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:10,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:01:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:01:10,217 INFO L87 Difference]: Start difference. First operand 597 states and 741 transitions. Second operand 8 states. [2019-10-14 23:01:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:11,078 INFO L93 Difference]: Finished difference Result 1283 states and 1612 transitions. [2019-10-14 23:01:11,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:01:11,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2019-10-14 23:01:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:11,084 INFO L225 Difference]: With dead ends: 1283 [2019-10-14 23:01:11,084 INFO L226 Difference]: Without dead ends: 608 [2019-10-14 23:01:11,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:01:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-14 23:01:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-14 23:01:11,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-14 23:01:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 755 transitions. [2019-10-14 23:01:11,158 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 755 transitions. Word has length 137 [2019-10-14 23:01:11,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:11,158 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 755 transitions. [2019-10-14 23:01:11,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:01:11,159 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 755 transitions. [2019-10-14 23:01:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-14 23:01:11,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:11,162 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:11,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:11,369 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:11,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1387744378, now seen corresponding path program 1 times [2019-10-14 23:01:11,370 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:11,370 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582680594] [2019-10-14 23:01:11,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:11,370 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:11,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,615 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:01:11,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582680594] [2019-10-14 23:01:11,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383601976] [2019-10-14 23:01:11,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:12,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 23:01:12,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:01:12,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:01:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:01:12,277 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:01:12,277 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2019-10-14 23:01:12,277 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084652081] [2019-10-14 23:01:12,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:01:12,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:01:12,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:01:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:01:12,279 INFO L87 Difference]: Start difference. First operand 608 states and 755 transitions. Second operand 6 states. [2019-10-14 23:01:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:01:12,403 INFO L93 Difference]: Finished difference Result 1193 states and 1482 transitions. [2019-10-14 23:01:12,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:01:12,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-10-14 23:01:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:01:12,407 INFO L225 Difference]: With dead ends: 1193 [2019-10-14 23:01:12,407 INFO L226 Difference]: Without dead ends: 602 [2019-10-14 23:01:12,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:01:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-14 23:01:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 598. [2019-10-14 23:01:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-14 23:01:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 742 transitions. [2019-10-14 23:01:12,466 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 742 transitions. Word has length 138 [2019-10-14 23:01:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:01:12,466 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 742 transitions. [2019-10-14 23:01:12,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:01:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 742 transitions. [2019-10-14 23:01:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-14 23:01:12,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:01:12,469 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:01:12,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:12,675 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:01:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:01:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash -377252935, now seen corresponding path program 2 times [2019-10-14 23:01:12,676 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:01:12,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190164722] [2019-10-14 23:01:12,676 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:12,676 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:01:12,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:01:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:12,938 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-14 23:01:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:01:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-14 23:01:13,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190164722] [2019-10-14 23:01:13,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566328389] [2019-10-14 23:01:13,252 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:01:13,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:01:13,542 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:01:13,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 87 conjunts are in the unsatisfiable core [2019-10-14 23:01:13,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:01:13,686 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-14 23:01:13,687 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:01:13,704 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:13,708 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-14 23:01:13,709 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:01:13,716 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:01:13,716 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:01:13,716 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10