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-f4eb214f-m [2019-10-13 19:01:46,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:01:46,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:01:46,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:01:46,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:01:46,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:01:46,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:01:46,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:01:46,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:01:46,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:01:46,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:01:46,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:01:46,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:01:46,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:01:46,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:01:46,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:01:46,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:01:46,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:01:46,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:01:46,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:01:46,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:01:46,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:01:46,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:01:46,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:01:46,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:01:46,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:01:46,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:01:46,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:01:46,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:01:46,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:01:46,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:01:46,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:01:46,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:01:46,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:01:46,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:01:46,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:01:46,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:01:46,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:01:46,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:01:46,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:01:46,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:01:46,380 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 [2019-10-13 19:01:46,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:01:46,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:01:46,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:01:46,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:01:46,412 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:01:46,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:01:46,412 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:01:46,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:01:46,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:01:46,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:01:46,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:01:46,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:01:46,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:01:46,414 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:01:46,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:01:46,414 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:01:46,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:01:46,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:01:46,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:01:46,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:01:46,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:01:46,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:01:46,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:01:46,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:01:46,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:01:46,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:01:46,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:01:46,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:01:46,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:01:46,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:01:46,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:01:46,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:01:46,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:01:46,704 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:01:46,705 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-13 19:01:46,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3d9fe42e/92f9c23e78e243a4875f7d6256bc140b/FLAGaa1be5eff [2019-10-13 19:01:47,530 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:01:47,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-13 19:01:47,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3d9fe42e/92f9c23e78e243a4875f7d6256bc140b/FLAGaa1be5eff [2019-10-13 19:01:47,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3d9fe42e/92f9c23e78e243a4875f7d6256bc140b [2019-10-13 19:01:47,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:01:47,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:01:47,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:01:47,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:01:47,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:01:47,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:47" (1/1) ... [2019-10-13 19:01:47,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de48500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:47, skipping insertion in model container [2019-10-13 19:01:47,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:47" (1/1) ... [2019-10-13 19:01:47,624 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:01:47,719 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:01:48,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:01:48,952 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:01:49,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:01:49,271 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:01:49,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49 WrapperNode [2019-10-13 19:01:49,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:01:49,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:01:49,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:01:49,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:01:49,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (1/1) ... [2019-10-13 19:01:49,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:01:49,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:01:49,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:01:49,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:01:49,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (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 [2019-10-13 19:01:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:01:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:01:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-10-13 19:01:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 19:01:49,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 19:01:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 19:01:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 19:01:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 19:01:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 19:01:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 19:01:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 19:01:49,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 19:01:49,581 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2019-10-13 19:01:49,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2019-10-13 19:01:49,582 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2019-10-13 19:01:49,583 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2019-10-13 19:01:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2019-10-13 19:01:49,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2019-10-13 19:01:49,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2019-10-13 19:01:49,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2019-10-13 19:01:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2019-10-13 19:01:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:01:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_5 [2019-10-13 19:01:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_6 [2019-10-13 19:01:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 19:01:49,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 19:01:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 19:01:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 19:01:49,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 19:01:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-10-13 19:01:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-10-13 19:01:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-10-13 19:01:49,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-10-13 19:01:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-10-13 19:01:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 19:01:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-10-13 19:01:49,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2019-10-13 19:01:49,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 19:01:49,593 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2019-10-13 19:01:49,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2019-10-13 19:01:49,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2019-10-13 19:01:49,594 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2019-10-13 19:01:49,594 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2019-10-13 19:01:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2019-10-13 19:01:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 19:01:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 19:01:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 19:01:49,597 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 19:01:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:01:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-10-13 19:01:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 19:01:49,598 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2019-10-13 19:01:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_5 [2019-10-13 19:01:49,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_6 [2019-10-13 19:01:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-10-13 19:01:49,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-10-13 19:01:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:01:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:01:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:01:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 19:01:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:01:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:01:49,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 19:01:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:01:49,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 19:01:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 19:01:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 19:01:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 19:01:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 19:01:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 19:01:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 19:01:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 19:01:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 19:01:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2019-10-13 19:01:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2019-10-13 19:01:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2019-10-13 19:01:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2019-10-13 19:01:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2019-10-13 19:01:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2019-10-13 19:01:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2019-10-13 19:01:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2019-10-13 19:01:49,667 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2019-10-13 19:01:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2019-10-13 19:01:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2019-10-13 19:01:49,668 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2019-10-13 19:01:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:01:49,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:01:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:01:49,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:01:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:01:49,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-10-13 19:01:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2019-10-13 19:01:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 19:01:49,672 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2019-10-13 19:01:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2019-10-13 19:01:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 19:01:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 19:01:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:01:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:01:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 19:01:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 19:01:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 19:01:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:01:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 19:01:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:01:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:01:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:01:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:01:50,635 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 19:01:50,652 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-10-13 19:01:51,153 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:01:51,153 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:01:51,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:51 BoogieIcfgContainer [2019-10-13 19:01:51,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:01:51,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:01:51,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:01:51,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:01:51,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:01:47" (1/3) ... [2019-10-13 19:01:51,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c22b255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:51, skipping insertion in model container [2019-10-13 19:01:51,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:49" (2/3) ... [2019-10-13 19:01:51,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c22b255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:51, skipping insertion in model container [2019-10-13 19:01:51,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:51" (3/3) ... [2019-10-13 19:01:51,163 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2019-10-13 19:01:51,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:01:51,180 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:01:51,190 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:01:51,220 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:01:51,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:01:51,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:01:51,220 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:01:51,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:01:51,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:01:51,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:01:51,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:01:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2019-10-13 19:01:51,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-13 19:01:51,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:01:51,254 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] [2019-10-13 19:01:51,256 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:01:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:01:51,261 INFO L82 PathProgramCache]: Analyzing trace with hash 945988663, now seen corresponding path program 1 times [2019-10-13 19:01:51,268 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:01:51,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10216670] [2019-10-13 19:01:51,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:51,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:51,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:01:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,082 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:01:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:01:52,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10216670] [2019-10-13 19:01:52,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:01:52,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:01:52,325 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139765473] [2019-10-13 19:01:52,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:01:52,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:01:52,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:01:52,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:01:52,348 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 7 states. [2019-10-13 19:01:52,588 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-13 19:01:53,309 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:01:54,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:01:54,535 INFO L93 Difference]: Finished difference Result 351 states and 450 transitions. [2019-10-13 19:01:54,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:01:54,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-10-13 19:01:54,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:01:54,554 INFO L225 Difference]: With dead ends: 351 [2019-10-13 19:01:54,555 INFO L226 Difference]: Without dead ends: 234 [2019-10-13 19:01:54,559 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:01:54,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-10-13 19:01:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 187. [2019-10-13 19:01:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-10-13 19:01:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2019-10-13 19:01:54,655 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 69 [2019-10-13 19:01:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:01:54,656 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2019-10-13 19:01:54,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:01:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2019-10-13 19:01:54,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 19:01:54,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:01:54,661 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] [2019-10-13 19:01:54,661 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:01:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:01:54,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1444090839, now seen corresponding path program 1 times [2019-10-13 19:01:54,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:01:54,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236800945] [2019-10-13 19:01:54,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:54,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:54,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:01:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,003 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:01:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:01:55,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236800945] [2019-10-13 19:01:55,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:01:55,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:01:55,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745807081] [2019-10-13 19:01:55,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:01:55,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:01:55,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:01:55,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:01:55,160 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand 7 states. [2019-10-13 19:01:55,339 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-13 19:01:55,629 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:01:55,868 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 19:01:56,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:01:56,660 INFO L93 Difference]: Finished difference Result 241 states and 291 transitions. [2019-10-13 19:01:56,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:01:56,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-13 19:01:56,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:01:56,665 INFO L225 Difference]: With dead ends: 241 [2019-10-13 19:01:56,665 INFO L226 Difference]: Without dead ends: 236 [2019-10-13 19:01:56,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:01:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-10-13 19:01:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 187. [2019-10-13 19:01:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2019-10-13 19:01:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 226 transitions. [2019-10-13 19:01:56,713 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 226 transitions. Word has length 74 [2019-10-13 19:01:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:01:56,714 INFO L462 AbstractCegarLoop]: Abstraction has 187 states and 226 transitions. [2019-10-13 19:01:56,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:01:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 226 transitions. [2019-10-13 19:01:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 19:01:56,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:01:56,717 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] [2019-10-13 19:01:56,718 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:01:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:01:56,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1501349141, now seen corresponding path program 1 times [2019-10-13 19:01:56,718 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:01:56,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320899947] [2019-10-13 19:01:56,719 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:56,719 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:56,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:01:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,054 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:01:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:01:57,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320899947] [2019-10-13 19:01:57,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:01:57,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:01:57,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576646327] [2019-10-13 19:01:57,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:01:57,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:01:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:01:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:01:57,239 INFO L87 Difference]: Start difference. First operand 187 states and 226 transitions. Second operand 7 states. [2019-10-13 19:01:57,417 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-13 19:01:57,699 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:01:57,920 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 19:01:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:01:59,253 INFO L93 Difference]: Finished difference Result 534 states and 669 transitions. [2019-10-13 19:01:59,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:01:59,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-13 19:01:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:01:59,258 INFO L225 Difference]: With dead ends: 534 [2019-10-13 19:01:59,259 INFO L226 Difference]: Without dead ends: 371 [2019-10-13 19:01:59,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:01:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-13 19:01:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361. [2019-10-13 19:01:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2019-10-13 19:01:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 449 transitions. [2019-10-13 19:01:59,316 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 449 transitions. Word has length 74 [2019-10-13 19:01:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:01:59,317 INFO L462 AbstractCegarLoop]: Abstraction has 361 states and 449 transitions. [2019-10-13 19:01:59,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:01:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 449 transitions. [2019-10-13 19:01:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:01:59,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:01:59,320 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] [2019-10-13 19:01:59,321 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:01:59,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:01:59,321 INFO L82 PathProgramCache]: Analyzing trace with hash -173204652, now seen corresponding path program 1 times [2019-10-13 19:01:59,321 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:01:59,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934612929] [2019-10-13 19:01:59,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:59,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:01:59,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:01:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,579 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:01:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:01:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:01:59,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934612929] [2019-10-13 19:01:59,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:01:59,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:01:59,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236070147] [2019-10-13 19:01:59,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:01:59,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:01:59,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:01:59,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:01:59,753 INFO L87 Difference]: Start difference. First operand 361 states and 449 transitions. Second operand 8 states. [2019-10-13 19:01:59,930 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-13 19:02:00,210 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:02:00,416 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 19:02:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:01,652 INFO L93 Difference]: Finished difference Result 783 states and 985 transitions. [2019-10-13 19:02:01,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:02:01,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-13 19:02:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:01,659 INFO L225 Difference]: With dead ends: 783 [2019-10-13 19:02:01,660 INFO L226 Difference]: Without dead ends: 456 [2019-10-13 19:02:01,663 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:02:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2019-10-13 19:02:01,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 437. [2019-10-13 19:02:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-10-13 19:02:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 549 transitions. [2019-10-13 19:02:01,710 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 549 transitions. Word has length 88 [2019-10-13 19:02:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:01,710 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 549 transitions. [2019-10-13 19:02:01,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:02:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 549 transitions. [2019-10-13 19:02:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 19:02:01,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:01,713 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] [2019-10-13 19:02:01,714 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1275114055, now seen corresponding path program 1 times [2019-10-13 19:02:01,714 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:01,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818815727] [2019-10-13 19:02:01,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:01,715 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:01,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,078 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 19:02:02,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818815727] [2019-10-13 19:02:02,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801874831] [2019-10-13 19:02:02,420 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 [2019-10-13 19:02:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:02,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:02:02,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:02:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:02,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:02:02,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2019-10-13 19:02:02,916 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380197042] [2019-10-13 19:02:02,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:02:02,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:02,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:02:02,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:02:02,918 INFO L87 Difference]: Start difference. First operand 437 states and 549 transitions. Second operand 7 states. [2019-10-13 19:02:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:03,017 INFO L93 Difference]: Finished difference Result 860 states and 1087 transitions. [2019-10-13 19:02:03,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:02:03,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-10-13 19:02:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:03,024 INFO L225 Difference]: With dead ends: 860 [2019-10-13 19:02:03,024 INFO L226 Difference]: Without dead ends: 457 [2019-10-13 19:02:03,026 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:02:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2019-10-13 19:02:03,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 429. [2019-10-13 19:02:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-13 19:02:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 535 transitions. [2019-10-13 19:02:03,099 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 535 transitions. Word has length 107 [2019-10-13 19:02:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:03,099 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 535 transitions. [2019-10-13 19:02:03,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:02:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 535 transitions. [2019-10-13 19:02:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 19:02:03,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:03,104 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] [2019-10-13 19:02:03,309 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:02:03,309 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:03,310 INFO L82 PathProgramCache]: Analyzing trace with hash -4749623, now seen corresponding path program 1 times [2019-10-13 19:02:03,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:03,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430543829] [2019-10-13 19:02:03,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:03,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:03,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,599 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:02:03,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430543829] [2019-10-13 19:02:03,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275078683] [2019-10-13 19:02:03,789 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 [2019-10-13 19:02:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 19:02:04,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:02:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:04,192 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:02:04,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2019-10-13 19:02:04,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093775695] [2019-10-13 19:02:04,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:02:04,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:04,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:02:04,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:02:04,203 INFO L87 Difference]: Start difference. First operand 429 states and 535 transitions. Second operand 3 states. [2019-10-13 19:02:04,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:04,264 INFO L93 Difference]: Finished difference Result 805 states and 1020 transitions. [2019-10-13 19:02:04,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:02:04,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-10-13 19:02:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:04,269 INFO L225 Difference]: With dead ends: 805 [2019-10-13 19:02:04,269 INFO L226 Difference]: Without dead ends: 410 [2019-10-13 19:02:04,271 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 [2019-10-13 19:02:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2019-10-13 19:02:04,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 392. [2019-10-13 19:02:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-10-13 19:02:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 488 transitions. [2019-10-13 19:02:04,326 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 488 transitions. Word has length 107 [2019-10-13 19:02:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:04,326 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 488 transitions. [2019-10-13 19:02:04,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:02:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 488 transitions. [2019-10-13 19:02:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 19:02:04,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:04,329 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] [2019-10-13 19:02:04,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:02:04,535 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:04,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:04,536 INFO L82 PathProgramCache]: Analyzing trace with hash 549282891, now seen corresponding path program 1 times [2019-10-13 19:02:04,536 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:04,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427537731] [2019-10-13 19:02:04,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:04,537 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:04,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,858 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:05,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427537731] [2019-10-13 19:02:05,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:02:05,125 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:02:05,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580465894] [2019-10-13 19:02:05,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:02:05,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:05,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:02:05,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:02:05,126 INFO L87 Difference]: Start difference. First operand 392 states and 488 transitions. Second operand 11 states. [2019-10-13 19:02:05,392 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-13 19:02:05,664 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:02:05,927 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-13 19:02:06,999 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2019-10-13 19:02:08,409 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2019-10-13 19:02:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:08,880 INFO L93 Difference]: Finished difference Result 631 states and 784 transitions. [2019-10-13 19:02:08,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:02:08,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2019-10-13 19:02:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:08,886 INFO L225 Difference]: With dead ends: 631 [2019-10-13 19:02:08,887 INFO L226 Difference]: Without dead ends: 628 [2019-10-13 19:02:08,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:02:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-13 19:02:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 599. [2019-10-13 19:02:08,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 19:02:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 751 transitions. [2019-10-13 19:02:08,958 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 751 transitions. Word has length 113 [2019-10-13 19:02:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:08,959 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 751 transitions. [2019-10-13 19:02:08,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:02:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 751 transitions. [2019-10-13 19:02:08,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:02:08,962 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:08,963 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] [2019-10-13 19:02:08,963 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:08,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1039387099, now seen corresponding path program 1 times [2019-10-13 19:02:08,964 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:08,964 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526706473] [2019-10-13 19:02:08,964 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:08,964 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:08,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,205 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:09,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526706473] [2019-10-13 19:02:09,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:02:09,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:02:09,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77118713] [2019-10-13 19:02:09,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:02:09,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:02:09,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:02:09,413 INFO L87 Difference]: Start difference. First operand 599 states and 751 transitions. Second operand 8 states. [2019-10-13 19:02:09,587 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-10-13 19:02:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:10,706 INFO L93 Difference]: Finished difference Result 1047 states and 1312 transitions. [2019-10-13 19:02:10,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:02:10,706 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2019-10-13 19:02:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:10,711 INFO L225 Difference]: With dead ends: 1047 [2019-10-13 19:02:10,711 INFO L226 Difference]: Without dead ends: 625 [2019-10-13 19:02:10,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:02:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-13 19:02:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 599. [2019-10-13 19:02:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 19:02:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 747 transitions. [2019-10-13 19:02:10,771 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 747 transitions. Word has length 122 [2019-10-13 19:02:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:10,772 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 747 transitions. [2019-10-13 19:02:10,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:02:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 747 transitions. [2019-10-13 19:02:10,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 19:02:10,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:10,776 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] [2019-10-13 19:02:10,777 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:10,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1173400605, now seen corresponding path program 1 times [2019-10-13 19:02:10,777 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:10,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292952609] [2019-10-13 19:02:10,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:10,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:10,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,148 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:02:11,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292952609] [2019-10-13 19:02:11,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557264230] [2019-10-13 19:02:11,624 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 [2019-10-13 19:02:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:11,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 19:02:11,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:02:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:12,049 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:02:12,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 16 [2019-10-13 19:02:12,050 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795479034] [2019-10-13 19:02:12,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:02:12,050 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:02:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:02:12,051 INFO L87 Difference]: Start difference. First operand 599 states and 747 transitions. Second operand 7 states. [2019-10-13 19:02:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:12,152 INFO L93 Difference]: Finished difference Result 1025 states and 1278 transitions. [2019-10-13 19:02:12,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:02:12,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2019-10-13 19:02:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:12,157 INFO L225 Difference]: With dead ends: 1025 [2019-10-13 19:02:12,157 INFO L226 Difference]: Without dead ends: 603 [2019-10-13 19:02:12,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:02:12,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-13 19:02:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 597. [2019-10-13 19:02:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2019-10-13 19:02:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 741 transitions. [2019-10-13 19:02:12,223 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 741 transitions. Word has length 122 [2019-10-13 19:02:12,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:12,224 INFO L462 AbstractCegarLoop]: Abstraction has 597 states and 741 transitions. [2019-10-13 19:02:12,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:02:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 741 transitions. [2019-10-13 19:02:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 19:02:12,228 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:12,228 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] [2019-10-13 19:02:12,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:02:12,442 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:12,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1755090979, now seen corresponding path program 1 times [2019-10-13 19:02:12,443 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:12,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910979618] [2019-10-13 19:02:12,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:12,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:12,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,710 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:13,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910979618] [2019-10-13 19:02:13,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279102980] [2019-10-13 19:02:13,009 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 [2019-10-13 19:02:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:13,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-13 19:02:13,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:02:13,502 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,504 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,506 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,507 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,509 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,511 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,520 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 [2019-10-13 19:02:13,521 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:02:13,540 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:13,546 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,548 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,550 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,553 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,555 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:13,556 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 [2019-10-13 19:02:13,557 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 19:02:13,565 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:13,566 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:02:13,566 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:10 [2019-10-13 19:02:13,617 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,618 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,619 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,620 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,622 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,624 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,625 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 [2019-10-13 19:02:13,626 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:02:13,644 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:13,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,651 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,653 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,654 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,656 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,657 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-13 19:02:13,659 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:13,659 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 [2019-10-13 19:02:13,660 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 19:02:13,667 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:13,667 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:02:13,668 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:78, output treesize:10 [2019-10-13 19:02:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 19:02:14,144 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:02:14,144 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2019-10-13 19:02:14,144 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599310259] [2019-10-13 19:02:14,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:02:14,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:14,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:02:14,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:02:14,146 INFO L87 Difference]: Start difference. First operand 597 states and 741 transitions. Second operand 8 states. [2019-10-13 19:02:14,896 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-13 19:02:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:15,099 INFO L93 Difference]: Finished difference Result 1283 states and 1612 transitions. [2019-10-13 19:02:15,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:02:15,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2019-10-13 19:02:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:15,104 INFO L225 Difference]: With dead ends: 1283 [2019-10-13 19:02:15,104 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 19:02:15,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:02:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 19:02:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2019-10-13 19:02:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-13 19:02:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 755 transitions. [2019-10-13 19:02:15,163 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 755 transitions. Word has length 137 [2019-10-13 19:02:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:15,164 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 755 transitions. [2019-10-13 19:02:15,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:02:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 755 transitions. [2019-10-13 19:02:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 19:02:15,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:15,168 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] [2019-10-13 19:02:15,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:02:15,374 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1387744378, now seen corresponding path program 1 times [2019-10-13 19:02:15,375 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:15,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835857499] [2019-10-13 19:02:15,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:15,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:15,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,747 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:02:16,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835857499] [2019-10-13 19:02:16,022 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190331262] [2019-10-13 19:02:16,022 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 [2019-10-13 19:02:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:16,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 19:02:16,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:02:16,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 19:02:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:02:16,408 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:02:16,409 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2019-10-13 19:02:16,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364988719] [2019-10-13 19:02:16,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:02:16,410 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:02:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:02:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:02:16,411 INFO L87 Difference]: Start difference. First operand 608 states and 755 transitions. Second operand 6 states. [2019-10-13 19:02:16,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:02:16,565 INFO L93 Difference]: Finished difference Result 1193 states and 1482 transitions. [2019-10-13 19:02:16,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:02:16,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2019-10-13 19:02:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:02:16,571 INFO L225 Difference]: With dead ends: 1193 [2019-10-13 19:02:16,571 INFO L226 Difference]: Without dead ends: 602 [2019-10-13 19:02:16,574 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 [2019-10-13 19:02:16,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-10-13 19:02:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 598. [2019-10-13 19:02:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2019-10-13 19:02:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 742 transitions. [2019-10-13 19:02:16,647 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 742 transitions. Word has length 138 [2019-10-13 19:02:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:02:16,649 INFO L462 AbstractCegarLoop]: Abstraction has 598 states and 742 transitions. [2019-10-13 19:02:16,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:02:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 742 transitions. [2019-10-13 19:02:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-13 19:02:16,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:02:16,651 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] [2019-10-13 19:02:16,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:02:16,858 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:02:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:02:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash -377252935, now seen corresponding path program 2 times [2019-10-13 19:02:16,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:02:16,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865308136] [2019-10-13 19:02:16,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:16,858 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:02:16,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:02:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,109 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-10-13 19:02:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:02:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 19:02:17,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865308136] [2019-10-13 19:02:17,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566929955] [2019-10-13 19:02:17,521 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 [2019-10-13 19:02:17,907 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-13 19:02:17,908 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 19:02:17,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 87 conjunts are in the unsatisfiable core [2019-10-13 19:02:17,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:02:18,019 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 [2019-10-13 19:02:18,020 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:02:18,036 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:18,040 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 [2019-10-13 19:02:18,041 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 19:02:18,048 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:02:18,049 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:02:18,049 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10