/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 22:15:56,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 22:15:56,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 22:15:56,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 22:15:56,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 22:15:56,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 22:15:56,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 22:15:56,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 22:15:56,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 22:15:56,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 22:15:56,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 22:15:56,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 22:15:56,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 22:15:56,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 22:15:56,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 22:15:56,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 22:15:56,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 22:15:56,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 22:15:56,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 22:15:56,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 22:15:56,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 22:15:56,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 22:15:56,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 22:15:56,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 22:15:56,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 22:15:56,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 22:15:56,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 22:15:56,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 22:15:56,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 22:15:56,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 22:15:56,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 22:15:56,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 22:15:56,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 22:15:56,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 22:15:56,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 22:15:56,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 22:15:56,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 22:15:56,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 22:15:56,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 22:15:56,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 22:15:56,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 22:15:56,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-07-19 22:15:56,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 22:15:56,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 22:15:56,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 22:15:56,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 22:15:56,311 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 22:15:56,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 22:15:56,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 22:15:56,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 22:15:56,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 22:15:56,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 22:15:56,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 22:15:56,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 22:15:56,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 22:15:56,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 22:15:56,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 22:15:56,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 22:15:56,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 22:15:56,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 22:15:56,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 22:15:56,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 22:15:56,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 22:15:56,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 22:15:56,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 22:15:56,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 22:15:56,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 22:15:56,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 22:15:56,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-19 22:15:56,316 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 22:15:56,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 22:15:56,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 22:15:56,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 22:15:56,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 22:15:56,625 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 22:15:56,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-19 22:15:56,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6e8448d/3dc1637367134aec904b0b9c3f99a5a2/FLAG175b8e921 [2020-07-19 22:15:57,492 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 22:15:57,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-19 22:15:57,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6e8448d/3dc1637367134aec904b0b9c3f99a5a2/FLAG175b8e921 [2020-07-19 22:15:58,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6e8448d/3dc1637367134aec904b0b9c3f99a5a2 [2020-07-19 22:15:58,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 22:15:58,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 22:15:58,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 22:15:58,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 22:15:58,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 22:15:58,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:15:58" (1/1) ... [2020-07-19 22:15:58,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec48294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:58, skipping insertion in model container [2020-07-19 22:15:58,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:15:58" (1/1) ... [2020-07-19 22:15:58,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 22:15:58,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 22:15:59,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 22:15:59,085 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 22:15:59,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 22:15:59,339 INFO L208 MainTranslator]: Completed translation [2020-07-19 22:15:59,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59 WrapperNode [2020-07-19 22:15:59,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 22:15:59,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 22:15:59,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 22:15:59,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 22:15:59,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (1/1) ... [2020-07-19 22:15:59,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 22:15:59,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 22:15:59,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 22:15:59,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 22:15:59,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (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 [2020-07-19 22:15:59,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 22:15:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 22:15:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-07-19 22:15:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-07-19 22:15:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-07-19 22:15:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-07-19 22:15:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-07-19 22:15:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-07-19 22:15:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-07-19 22:15:59,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-07-19 22:15:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-07-19 22:15:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-07-19 22:15:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-07-19 22:15:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 22:15:59,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-07-19 22:15:59,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-07-19 22:15:59,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-07-19 22:15:59,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-07-19 22:15:59,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-07-19 22:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-07-19 22:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-19 22:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-07-19 22:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-07-19 22:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-07-19 22:15:59,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-19 22:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-07-19 22:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-07-19 22:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-07-19 22:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-07-19 22:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-07-19 22:15:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-07-19 22:15:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-07-19 22:15:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-07-19 22:15:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-07-19 22:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 22:15:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-07-19 22:15:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-07-19 22:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-07-19 22:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-07-19 22:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-07-19 22:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-07-19 22:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-07-19 22:15:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-07-19 22:15:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-07-19 22:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 22:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 22:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 22:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 22:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-07-19 22:15:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-07-19 22:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 22:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-07-19 22:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-07-19 22:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-07-19 22:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-19 22:15:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-19 22:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 22:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 22:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-07-19 22:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-07-19 22:15:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 22:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-07-19 22:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 22:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 22:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-19 22:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 22:15:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 22:15:59,889 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-19 22:15:59,973 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-19 22:15:59,973 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-19 22:15:59,974 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-07-19 22:15:59,974 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-07-19 22:15:59,975 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-19 22:16:00,002 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-07-19 22:16:00,002 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-07-19 22:16:00,109 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-07-19 22:16:00,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 22:16:00,287 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 22:16:00,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:16:00 BoogieIcfgContainer [2020-07-19 22:16:00,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 22:16:00,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 22:16:00,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 22:16:00,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 22:16:00,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:15:58" (1/3) ... [2020-07-19 22:16:00,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ab81a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:16:00, skipping insertion in model container [2020-07-19 22:16:00,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:15:59" (2/3) ... [2020-07-19 22:16:00,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ab81a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:16:00, skipping insertion in model container [2020-07-19 22:16:00,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:16:00" (3/3) ... [2020-07-19 22:16:00,300 INFO L109 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-07-19 22:16:00,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 22:16:00,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 22:16:00,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 22:16:00,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 22:16:00,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 22:16:00,358 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 22:16:00,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 22:16:00,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 22:16:00,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 22:16:00,358 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 22:16:00,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 22:16:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-07-19 22:16:00,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 22:16:00,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:16:00,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 22:16:00,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:16:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:16:00,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1611807670, now seen corresponding path program 1 times [2020-07-19 22:16:00,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:16:00,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671109904] [2020-07-19 22:16:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@50ce482a [2020-07-19 22:16:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:16:00,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671109904] [2020-07-19 22:16:00,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:16:00,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 22:16:00,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035137315] [2020-07-19 22:16:00,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 22:16:00,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:16:00,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 22:16:00,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 22:16:00,869 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 4 states. [2020-07-19 22:16:01,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:16:01,506 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2020-07-19 22:16:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 22:16:01,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-19 22:16:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:16:01,529 INFO L225 Difference]: With dead ends: 241 [2020-07-19 22:16:01,529 INFO L226 Difference]: Without dead ends: 153 [2020-07-19 22:16:01,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 22:16:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-19 22:16:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2020-07-19 22:16:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-19 22:16:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2020-07-19 22:16:01,730 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 24 [2020-07-19 22:16:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:16:01,731 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2020-07-19 22:16:01,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 22:16:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2020-07-19 22:16:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-19 22:16:01,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:16:01,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 22:16:01,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 22:16:01,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:16:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:16:01,737 INFO L82 PathProgramCache]: Analyzing trace with hash 321457227, now seen corresponding path program 1 times [2020-07-19 22:16:01,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:16:01,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956368219] [2020-07-19 22:16:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@50ce482a [2020-07-19 22:16:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:16:02,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956368219] [2020-07-19 22:16:02,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:16:02,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:16:02,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133425501] [2020-07-19 22:16:02,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:16:02,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:16:02,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:16:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:16:02,054 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 9 states. [2020-07-19 22:16:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:16:02,802 INFO L93 Difference]: Finished difference Result 269 states and 321 transitions. [2020-07-19 22:16:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 22:16:02,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-07-19 22:16:02,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:16:02,809 INFO L225 Difference]: With dead ends: 269 [2020-07-19 22:16:02,809 INFO L226 Difference]: Without dead ends: 139 [2020-07-19 22:16:02,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-07-19 22:16:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-19 22:16:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 126. [2020-07-19 22:16:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-19 22:16:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2020-07-19 22:16:02,857 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 56 [2020-07-19 22:16:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:16:02,857 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2020-07-19 22:16:02,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:16:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2020-07-19 22:16:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-19 22:16:02,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:16:02,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 22:16:02,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 22:16:02,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:16:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:16:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash 751196711, now seen corresponding path program 1 times [2020-07-19 22:16:02,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:16:02,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440324011] [2020-07-19 22:16:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@50ce482a [2020-07-19 22:16:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:16:03,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440324011] [2020-07-19 22:16:03,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:16:03,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 22:16:03,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708316801] [2020-07-19 22:16:03,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 22:16:03,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:16:03,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 22:16:03,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 22:16:03,081 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand 7 states. [2020-07-19 22:16:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:16:03,702 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2020-07-19 22:16:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 22:16:03,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-07-19 22:16:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:16:03,706 INFO L225 Difference]: With dead ends: 186 [2020-07-19 22:16:03,706 INFO L226 Difference]: Without dead ends: 183 [2020-07-19 22:16:03,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-19 22:16:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-07-19 22:16:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 125. [2020-07-19 22:16:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-19 22:16:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2020-07-19 22:16:03,731 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 62 [2020-07-19 22:16:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:16:03,732 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2020-07-19 22:16:03,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 22:16:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2020-07-19 22:16:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-19 22:16:03,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:16:03,735 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-19 22:16:03,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 22:16:03,735 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:16:03,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:16:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1928601058, now seen corresponding path program 1 times [2020-07-19 22:16:03,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:16:03,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474474884] [2020-07-19 22:16:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@50ce482a [2020-07-19 22:16:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 22:16:03,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474474884] [2020-07-19 22:16:03,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 22:16:03,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 22:16:03,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027547643] [2020-07-19 22:16:03,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 22:16:03,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 22:16:03,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 22:16:03,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:16:03,985 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 9 states. [2020-07-19 22:16:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 22:16:04,390 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2020-07-19 22:16:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 22:16:04,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-07-19 22:16:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 22:16:04,394 INFO L225 Difference]: With dead ends: 201 [2020-07-19 22:16:04,394 INFO L226 Difference]: Without dead ends: 129 [2020-07-19 22:16:04,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 22:16:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-19 22:16:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2020-07-19 22:16:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-19 22:16:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2020-07-19 22:16:04,413 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 66 [2020-07-19 22:16:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 22:16:04,414 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2020-07-19 22:16:04,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 22:16:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2020-07-19 22:16:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-19 22:16:04,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 22:16:04,416 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-19 22:16:04,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 22:16:04,417 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 22:16:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 22:16:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash -167984647, now seen corresponding path program 1 times [2020-07-19 22:16:04,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 22:16:04,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139737408] [2020-07-19 22:16:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@50ce482a [2020-07-19 22:16:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 22:16:04,481 ERROR L253 erpolLogProxyWrapper]: Interpolant 19 not inductive [2020-07-19 22:16:04,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 22:16:04,482 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-19 22:16:04,489 INFO L168 Benchmark]: Toolchain (without parser) took 6429.64 ms. Allocated memory was 136.8 MB in the beginning and 323.0 MB in the end (delta: 186.1 MB). Free memory was 95.2 MB in the beginning and 130.6 MB in the end (delta: -35.5 MB). Peak memory consumption was 150.7 MB. Max. memory is 7.1 GB. [2020-07-19 22:16:04,490 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-19 22:16:04,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1278.73 ms. Allocated memory was 136.8 MB in the beginning and 207.1 MB in the end (delta: 70.3 MB). Free memory was 94.7 MB in the beginning and 132.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-07-19 22:16:04,491 INFO L168 Benchmark]: Boogie Preprocessor took 92.94 ms. Allocated memory is still 207.1 MB. Free memory was 132.4 MB in the beginning and 128.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-19 22:16:04,492 INFO L168 Benchmark]: RCFGBuilder took 857.44 ms. Allocated memory was 207.1 MB in the beginning and 237.5 MB in the end (delta: 30.4 MB). Free memory was 128.6 MB in the beginning and 183.8 MB in the end (delta: -55.2 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-07-19 22:16:04,493 INFO L168 Benchmark]: TraceAbstraction took 4193.15 ms. Allocated memory was 237.5 MB in the beginning and 323.0 MB in the end (delta: 85.5 MB). Free memory was 182.3 MB in the beginning and 130.6 MB in the end (delta: 51.7 MB). Peak memory consumption was 137.2 MB. Max. memory is 7.1 GB. [2020-07-19 22:16:04,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1278.73 ms. Allocated memory was 136.8 MB in the beginning and 207.1 MB in the end (delta: 70.3 MB). Free memory was 94.7 MB in the beginning and 132.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.94 ms. Allocated memory is still 207.1 MB. Free memory was 132.4 MB in the beginning and 128.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 857.44 ms. Allocated memory was 207.1 MB in the beginning and 237.5 MB in the end (delta: 30.4 MB). Free memory was 128.6 MB in the beginning and 183.8 MB in the end (delta: -55.2 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4193.15 ms. Allocated memory was 237.5 MB in the beginning and 323.0 MB in the end (delta: 85.5 MB). Free memory was 182.3 MB in the beginning and 130.6 MB in the end (delta: 51.7 MB). Peak memory consumption was 137.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...