/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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 0.2.0-b8ad66e [2020-10-23 19:09:50,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:09:50,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:09:50,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:09:50,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:09:50,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:09:50,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:09:50,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:09:50,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:09:50,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:09:50,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:09:50,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:09:50,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:09:50,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:09:50,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:09:50,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:09:50,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:09:50,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:09:50,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:09:50,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:09:50,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:09:50,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:09:50,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:09:50,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:09:50,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:09:50,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:09:50,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:09:50,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:09:50,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:09:50,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:09:50,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:09:50,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:09:50,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:09:50,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:09:50,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:09:50,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:09:50,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:09:50,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:09:50,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:09:50,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:09:50,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:09:50,614 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 [2020-10-23 19:09:50,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:09:50,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:09:50,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 19:09:50,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 19:09:50,645 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 19:09:50,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:09:50,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:09:50,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:09:50,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:09:50,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:09:50,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:09:50,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:09:50,648 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:09:50,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:09:50,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:09:50,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 19:09:50,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:09:50,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:09:50,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:09:50,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:09:50,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 19:09:50,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 19:09:50,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 19:09:50,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 19:09:50,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:09:50,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 19:09:50,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-23 19:09:50,653 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:09:51,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:09:51,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:09:51,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:09:51,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:09:51,080 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:09:51,081 INFO L432 ainManager$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 [2020-10-23 19:09:51,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df0974a37/9bde2b3c75824292974127cdd6ef36d5/FLAG1ca4c65e7 [2020-10-23 19:09:52,064 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:09:52,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-10-23 19:09:52,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df0974a37/9bde2b3c75824292974127cdd6ef36d5/FLAG1ca4c65e7 [2020-10-23 19:09:52,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df0974a37/9bde2b3c75824292974127cdd6ef36d5 [2020-10-23 19:09:52,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:09:52,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:09:52,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:09:52,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:09:52,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:09:52,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:09:52" (1/1) ... [2020-10-23 19:09:52,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6146d11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:52, skipping insertion in model container [2020-10-23 19:09:52,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:09:52" (1/1) ... [2020-10-23 19:09:52,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:09:52,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:09:53,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:09:53,131 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:09:53,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:09:53,399 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:09:53,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53 WrapperNode [2020-10-23 19:09:53,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:09:53,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:09:53,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:09:53,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:09:53,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (1/1) ... [2020-10-23 19:09:53,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:09:53,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:09:53,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:09:53,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:09:53,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (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 [2020-10-23 19:09:53,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:09:53,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:09:53,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-10-23 19:09:53,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-10-23 19:09:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:09:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-10-23 19:09:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-10-23 19:09:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-10-23 19:09:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-10-23 19:09:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-10-23 19:09:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-10-23 19:09:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-10-23 19:09:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-10-23 19:09:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-10-23 19:09:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:09:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-10-23 19:09:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-10-23 19:09:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-10-23 19:09:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-10-23 19:09:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-10-23 19:09:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-10-23 19:09:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-23 19:09:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-10-23 19:09:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-10-23 19:09:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-10-23 19:09:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-23 19:09:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-10-23 19:09:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-10-23 19:09:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-10-23 19:09:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-10-23 19:09:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-10-23 19:09:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-10-23 19:09:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-10-23 19:09:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-10-23 19:09:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-23 19:09:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:09:53,631 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-10-23 19:09:53,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-10-23 19:09:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-10-23 19:09:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-10-23 19:09:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-10-23 19:09:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-10-23 19:09:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-10-23 19:09:53,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-10-23 19:09:53,634 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-10-23 19:09:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-10-23 19:09:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-10-23 19:09:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-10-23 19:09:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-10-23 19:09:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-10-23 19:09:53,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-10-23 19:09:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-10-23 19:09:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-10-23 19:09:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-23 19:09:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-23 19:09:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:09:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:09:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-10-23 19:09:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-10-23 19:09:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:09:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-23 19:09:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:09:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:09:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:09:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-23 19:09:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:09:54,000 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 19:09:54,112 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-23 19:09:54,113 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-23 19:09:54,113 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-23 19:09:54,113 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-23 19:09:54,114 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 19:09:54,216 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-23 19:09:54,217 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-23 19:09:54,277 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-10-23 19:09:54,712 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:09:54,713 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 19:09:54,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:09:54 BoogieIcfgContainer [2020-10-23 19:09:54,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:09:54,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:09:54,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:09:54,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:09:54,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:09:52" (1/3) ... [2020-10-23 19:09:54,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74726582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:09:54, skipping insertion in model container [2020-10-23 19:09:54,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:09:53" (2/3) ... [2020-10-23 19:09:54,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74726582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:09:54, skipping insertion in model container [2020-10-23 19:09:54,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:09:54" (3/3) ... [2020-10-23 19:09:54,729 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-10-23 19:09:54,743 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:09:54,750 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 19:09:54,764 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 19:09:54,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:09:54,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:09:54,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 19:09:54,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:09:54,793 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:09:54,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:09:54,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:09:54,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:09:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-10-23 19:09:54,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 19:09:54,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:09:54,821 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] [2020-10-23 19:09:54,821 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:09:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:09:54,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1464910287, now seen corresponding path program 1 times [2020-10-23 19:09:54,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:09:54,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857261926] [2020-10-23 19:09:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:09:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:55,445 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-23 19:09:55,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:09:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:09:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:55,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:09:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:55,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:09:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:09:55,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857261926] [2020-10-23 19:09:55,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:09:55,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:09:55,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932527806] [2020-10-23 19:09:55,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:09:55,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:09:55,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:09:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:09:55,575 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 4 states. [2020-10-23 19:09:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:09:56,697 INFO L93 Difference]: Finished difference Result 250 states and 311 transitions. [2020-10-23 19:09:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:09:56,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-23 19:09:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:09:56,713 INFO L225 Difference]: With dead ends: 250 [2020-10-23 19:09:56,714 INFO L226 Difference]: Without dead ends: 157 [2020-10-23 19:09:56,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:09:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-23 19:09:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2020-10-23 19:09:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-23 19:09:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 178 transitions. [2020-10-23 19:09:56,806 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 178 transitions. Word has length 26 [2020-10-23 19:09:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:09:56,807 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 178 transitions. [2020-10-23 19:09:56,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:09:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 178 transitions. [2020-10-23 19:09:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 19:09:56,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:09:56,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 19:09:56,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:09:56,811 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:09:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:09:56,812 INFO L82 PathProgramCache]: Analyzing trace with hash -874489320, now seen corresponding path program 1 times [2020-10-23 19:09:56,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:09:56,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949601164] [2020-10-23 19:09:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:09:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:09:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:09:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:09:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:09:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 19:09:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:09:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 19:09:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:09:57,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949601164] [2020-10-23 19:09:57,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:09:57,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:09:57,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282278077] [2020-10-23 19:09:57,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:09:57,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:09:57,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:09:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:09:57,234 INFO L87 Difference]: Start difference. First operand 152 states and 178 transitions. Second operand 9 states. [2020-10-23 19:09:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:09:58,240 INFO L93 Difference]: Finished difference Result 273 states and 325 transitions. [2020-10-23 19:09:58,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:09:58,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-23 19:09:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:09:58,243 INFO L225 Difference]: With dead ends: 273 [2020-10-23 19:09:58,243 INFO L226 Difference]: Without dead ends: 141 [2020-10-23 19:09:58,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:09:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-23 19:09:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2020-10-23 19:09:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-23 19:09:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-10-23 19:09:58,272 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 58 [2020-10-23 19:09:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:09:58,273 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-10-23 19:09:58,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:09:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-10-23 19:09:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-23 19:09:58,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:09:58,276 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, 1, 1] [2020-10-23 19:09:58,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:09:58,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:09:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:09:58,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2146185900, now seen corresponding path program 1 times [2020-10-23 19:09:58,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:09:58,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258338506] [2020-10-23 19:09:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:09:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:09:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:09:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:09:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:09:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 19:09:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:09:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:09:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 19:09:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:09:58,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258338506] [2020-10-23 19:09:58,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:09:58,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 19:09:58,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514480626] [2020-10-23 19:09:58,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 19:09:58,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:09:58,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 19:09:58,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:09:58,571 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 8 states. [2020-10-23 19:09:59,543 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-23 19:09:59,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:09:59,801 INFO L93 Difference]: Finished difference Result 218 states and 250 transitions. [2020-10-23 19:09:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 19:09:59,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-23 19:09:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:09:59,812 INFO L225 Difference]: With dead ends: 218 [2020-10-23 19:09:59,812 INFO L226 Difference]: Without dead ends: 213 [2020-10-23 19:09:59,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-23 19:09:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-23 19:09:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 192. [2020-10-23 19:09:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-23 19:09:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 226 transitions. [2020-10-23 19:09:59,877 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 226 transitions. Word has length 64 [2020-10-23 19:09:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:09:59,877 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 226 transitions. [2020-10-23 19:09:59,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 19:09:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 226 transitions. [2020-10-23 19:09:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-23 19:09:59,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:09:59,881 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] [2020-10-23 19:09:59,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:09:59,882 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:09:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:09:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash 32937335, now seen corresponding path program 1 times [2020-10-23 19:09:59,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:09:59,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064494647] [2020-10-23 19:09:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:09:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:09:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:09:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:59,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:09:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:09:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:09:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:10:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-23 19:10:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:10:00,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064494647] [2020-10-23 19:10:00,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:10:00,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:10:00,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942558450] [2020-10-23 19:10:00,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:10:00,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:10:00,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:10:00,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:10:00,108 INFO L87 Difference]: Start difference. First operand 192 states and 226 transitions. Second operand 9 states. [2020-10-23 19:10:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:10:00,716 INFO L93 Difference]: Finished difference Result 334 states and 394 transitions. [2020-10-23 19:10:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:10:00,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-23 19:10:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:10:00,720 INFO L225 Difference]: With dead ends: 334 [2020-10-23 19:10:00,720 INFO L226 Difference]: Without dead ends: 195 [2020-10-23 19:10:00,722 INFO L677 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 [2020-10-23 19:10:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-23 19:10:00,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2020-10-23 19:10:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-23 19:10:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 224 transitions. [2020-10-23 19:10:00,753 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 224 transitions. Word has length 68 [2020-10-23 19:10:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:10:00,754 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 224 transitions. [2020-10-23 19:10:00,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:10:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 224 transitions. [2020-10-23 19:10:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-23 19:10:00,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:10:00,757 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, 1, 1] [2020-10-23 19:10:00,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:10:00,757 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:10:00,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:10:00,758 INFO L82 PathProgramCache]: Analyzing trace with hash -280432123, now seen corresponding path program 1 times [2020-10-23 19:10:00,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:10:00,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646394825] [2020-10-23 19:10:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:10:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:10:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:00,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:10:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 19:10:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 19:10:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:10:01,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646394825] [2020-10-23 19:10:01,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:10:01,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 19:10:01,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201527658] [2020-10-23 19:10:01,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 19:10:01,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:10:01,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 19:10:01,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 19:10:01,052 INFO L87 Difference]: Start difference. First operand 192 states and 224 transitions. Second operand 7 states. [2020-10-23 19:10:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:10:01,884 INFO L93 Difference]: Finished difference Result 382 states and 457 transitions. [2020-10-23 19:10:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:10:01,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-23 19:10:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:10:01,887 INFO L225 Difference]: With dead ends: 382 [2020-10-23 19:10:01,887 INFO L226 Difference]: Without dead ends: 210 [2020-10-23 19:10:01,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:10:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-23 19:10:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 198. [2020-10-23 19:10:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-23 19:10:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 230 transitions. [2020-10-23 19:10:01,918 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 230 transitions. Word has length 83 [2020-10-23 19:10:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:10:01,920 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 230 transitions. [2020-10-23 19:10:01,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 19:10:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 230 transitions. [2020-10-23 19:10:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-23 19:10:01,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:10:01,931 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, 1, 1] [2020-10-23 19:10:01,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:10:01,934 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:10:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:10:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1106353287, now seen corresponding path program 1 times [2020-10-23 19:10:01,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:10:01,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668301567] [2020-10-23 19:10:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:10:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:10:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:10:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 19:10:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-23 19:10:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 19:10:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668301567] [2020-10-23 19:10:02,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:10:02,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 19:10:02,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221823638] [2020-10-23 19:10:02,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 19:10:02,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:10:02,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 19:10:02,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-23 19:10:02,614 INFO L87 Difference]: Start difference. First operand 198 states and 230 transitions. Second operand 15 states. [2020-10-23 19:10:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:10:04,796 INFO L93 Difference]: Finished difference Result 321 states and 364 transitions. [2020-10-23 19:10:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 19:10:04,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2020-10-23 19:10:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:10:04,802 INFO L225 Difference]: With dead ends: 321 [2020-10-23 19:10:04,802 INFO L226 Difference]: Without dead ends: 170 [2020-10-23 19:10:04,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-10-23 19:10:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-23 19:10:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 150. [2020-10-23 19:10:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-23 19:10:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2020-10-23 19:10:04,834 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 83 [2020-10-23 19:10:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:10:04,835 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2020-10-23 19:10:04,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 19:10:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2020-10-23 19:10:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-23 19:10:04,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:10:04,843 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, 1, 1, 1, 1] [2020-10-23 19:10:04,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:10:04,843 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:10:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:10:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash -62830113, now seen corresponding path program 1 times [2020-10-23 19:10:04,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:10:04,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792447454] [2020-10-23 19:10:04,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:10:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:04,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:10:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:10:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 19:10:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 19:10:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 19:10:05,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792447454] [2020-10-23 19:10:05,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:10:05,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 19:10:05,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752528299] [2020-10-23 19:10:05,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 19:10:05,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:10:05,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 19:10:05,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:10:05,210 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand 10 states. [2020-10-23 19:10:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:10:05,788 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2020-10-23 19:10:05,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 19:10:05,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-23 19:10:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:10:05,790 INFO L225 Difference]: With dead ends: 154 [2020-10-23 19:10:05,790 INFO L226 Difference]: Without dead ends: 140 [2020-10-23 19:10:05,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-10-23 19:10:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-23 19:10:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-23 19:10:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-23 19:10:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 157 transitions. [2020-10-23 19:10:05,809 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 157 transitions. Word has length 85 [2020-10-23 19:10:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:10:05,810 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 157 transitions. [2020-10-23 19:10:05,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 19:10:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 157 transitions. [2020-10-23 19:10:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-23 19:10:05,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:10:05,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-23 19:10:05,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 19:10:05,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 19:10:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:10:05,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1310040124, now seen corresponding path program 1 times [2020-10-23 19:10:05,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 19:10:05,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270502560] [2020-10-23 19:10:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:10:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:10:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 19:10:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 19:10:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:10:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 19:10:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 19:10:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-23 19:10:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 19:10:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:10:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-23 19:10:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-23 19:10:06,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270502560] [2020-10-23 19:10:06,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634906910] [2020-10-23 19:10:06,063 INFO L95 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 [2020-10-23 19:10:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:10:06,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 19:10:06,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 19:10:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 19:10:06,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 19:10:06,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2020-10-23 19:10:06,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60960221] [2020-10-23 19:10:06,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:10:06,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 19:10:06,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:10:06,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-23 19:10:06,600 INFO L87 Difference]: Start difference. First operand 140 states and 157 transitions. Second operand 6 states. [2020-10-23 19:10:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:10:06,815 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-10-23 19:10:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 19:10:06,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-23 19:10:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:10:06,819 INFO L225 Difference]: With dead ends: 140 [2020-10-23 19:10:06,819 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 19:10:06,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-23 19:10:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 19:10:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 19:10:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 19:10:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 19:10:06,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2020-10-23 19:10:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:10:06,823 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 19:10:06,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:10:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 19:10:06,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 19:10:07,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-23 19:10:07,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 19:10:08,007 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-10-23 19:10:08,408 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 19:10:08,409 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 19:10:08,409 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 19:10:08,409 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 19:10:08,409 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point ldv_module_getEXIT(lines 5000 5009) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point L5003(lines 5003 5006) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point ldv_module_getENTRY(lines 5000 5009) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point L5003-2(lines 5000 5009) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point kfreeEXIT(lines 5125 5127) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point kfreeENTRY(lines 5125 5127) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point kfreeFINAL(lines 5125 5127) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point might_faultFINAL(lines 5104 5106) no Hoare annotation was computed. [2020-10-23 19:10:08,410 INFO L274 CegarLoopResult]: For program point might_faultEXIT(lines 5104 5106) no Hoare annotation was computed. [2020-10-23 19:10:08,411 INFO L274 CegarLoopResult]: For program point L4867(line 4867) no Hoare annotation was computed. [2020-10-23 19:10:08,411 INFO L274 CegarLoopResult]: For program point L4805(lines 4805 4863) no Hoare annotation was computed. [2020-10-23 19:10:08,411 INFO L274 CegarLoopResult]: For program point L4797(line 4797) no Hoare annotation was computed. [2020-10-23 19:10:08,411 INFO L274 CegarLoopResult]: For program point L4797-1(line 4797) no Hoare annotation was computed. [2020-10-23 19:10:08,411 INFO L274 CegarLoopResult]: For program point L4818(lines 4818 4842) no Hoare annotation was computed. [2020-10-23 19:10:08,412 INFO L274 CegarLoopResult]: For program point pppox_ioctlFINAL(lines 4785 4871) no Hoare annotation was computed. [2020-10-23 19:10:08,412 INFO L274 CegarLoopResult]: For program point L4814(line 4814) no Hoare annotation was computed. [2020-10-23 19:10:08,412 INFO L274 CegarLoopResult]: For program point L4843(lines 4805 4862) no Hoare annotation was computed. [2020-10-23 19:10:08,412 INFO L274 CegarLoopResult]: For program point L4814-1(line 4814) no Hoare annotation was computed. [2020-10-23 19:10:08,412 INFO L274 CegarLoopResult]: For program point L4802(lines 4801 4864) no Hoare annotation was computed. [2020-10-23 19:10:08,412 INFO L274 CegarLoopResult]: For program point L4856-1(line 4856) no Hoare annotation was computed. [2020-10-23 19:10:08,413 INFO L274 CegarLoopResult]: For program point L4856(line 4856) no Hoare annotation was computed. [2020-10-23 19:10:08,413 INFO L274 CegarLoopResult]: For program point L4852(lines 4852 4861) no Hoare annotation was computed. [2020-10-23 19:10:08,413 INFO L274 CegarLoopResult]: For program point L4815(line 4815) no Hoare annotation was computed. [2020-10-23 19:10:08,413 INFO L274 CegarLoopResult]: For program point L4815-1(line 4815) no Hoare annotation was computed. [2020-10-23 19:10:08,414 INFO L274 CegarLoopResult]: For program point pppox_ioctlEXIT(lines 4785 4871) no Hoare annotation was computed. [2020-10-23 19:10:08,414 INFO L274 CegarLoopResult]: For program point pppox_ioctlENTRY(lines 4785 4871) no Hoare annotation was computed. [2020-10-23 19:10:08,414 INFO L274 CegarLoopResult]: For program point L4799(line 4799) no Hoare annotation was computed. [2020-10-23 19:10:08,415 INFO L274 CegarLoopResult]: For program point L4799-1(lines 4794 4870) no Hoare annotation was computed. [2020-10-23 19:10:08,416 INFO L274 CegarLoopResult]: For program point L4808(lines 4808 4811) no Hoare annotation was computed. [2020-10-23 19:10:08,416 INFO L274 CegarLoopResult]: For program point L4804(lines 4803 4864) no Hoare annotation was computed. [2020-10-23 19:10:08,416 INFO L274 CegarLoopResult]: For program point lock_sockENTRY(lines 4719 4727) no Hoare annotation was computed. [2020-10-23 19:10:08,416 INFO L274 CegarLoopResult]: For program point lock_sockFINAL(lines 4719 4727) no Hoare annotation was computed. [2020-10-23 19:10:08,416 INFO L274 CegarLoopResult]: For program point lock_sockEXIT(lines 4719 4727) no Hoare annotation was computed. [2020-10-23 19:10:08,417 INFO L274 CegarLoopResult]: For program point L4723(line 4723) no Hoare annotation was computed. [2020-10-23 19:10:08,417 INFO L270 CegarLoopResult]: At program point L4957(lines 4956 4970) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,417 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 4933 4991) no Hoare annotation was computed. [2020-10-23 19:10:08,417 INFO L274 CegarLoopResult]: For program point L4947(lines 4947 4950) no Hoare annotation was computed. [2020-10-23 19:10:08,418 INFO L274 CegarLoopResult]: For program point L4945(line 4945) no Hoare annotation was computed. [2020-10-23 19:10:08,418 INFO L274 CegarLoopResult]: For program point L4976(lines 4976 4980) no Hoare annotation was computed. [2020-10-23 19:10:08,418 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 4933 4991) no Hoare annotation was computed. [2020-10-23 19:10:08,419 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 4933 4991) the Hoare annotation is: (or (and (= ~ldv_module_refcounter~0 1) (= |old(~LDV_IN_INTERRUPT~0)| ~LDV_IN_INTERRUPT~0)) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,419 INFO L274 CegarLoopResult]: For program point L4987(line 4987) no Hoare annotation was computed. [2020-10-23 19:10:08,419 INFO L274 CegarLoopResult]: For program point L4956(lines 4956 4970) no Hoare annotation was computed. [2020-10-23 19:10:08,419 INFO L270 CegarLoopResult]: At program point L4983(lines 4941 4990) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 1) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,419 INFO L270 CegarLoopResult]: At program point L4979(lines 4941 4990) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 1) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,419 INFO L270 CegarLoopResult]: At program point L4944-1(line 4944) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,419 INFO L270 CegarLoopResult]: At program point L4977(lines 4941 4990) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,420 INFO L270 CegarLoopResult]: At program point L4944(line 4944) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,420 INFO L270 CegarLoopResult]: At program point L4971(lines 4941 4990) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,420 INFO L274 CegarLoopResult]: For program point L4963(line 4963) no Hoare annotation was computed. [2020-10-23 19:10:08,421 INFO L270 CegarLoopResult]: At program point ldv_try_module_getENTRY(lines 5010 5027) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 1) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,422 INFO L270 CegarLoopResult]: At program point L5015(line 5015) the Hoare annotation is: (or (and (= ~ldv_module_refcounter~0 1) (= ldv_try_module_get_~module.base |ldv_try_module_get_#in~module.base|) (= ldv_try_module_get_~module.offset |ldv_try_module_get_#in~module.offset|) (<= (+ |ldv_try_module_get_#in~module.base| |ldv_try_module_get_#in~module.offset|) (+ (* 18446744073709551616 (div (+ |ldv_try_module_get_#in~module.base| |ldv_try_module_get_#in~module.offset| (- 1)) 18446744073709551616)) 18446744073709551615))) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point L5015-1(line 5015) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point L5017(lines 5017 5022) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point ldv_try_module_getFINAL(lines 5010 5027) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point L5013(lines 5013 5024) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point ldv_try_module_getEXIT(lines 5010 5027) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point lock_sock_nestedFINAL(lines 5101 5103) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point lock_sock_nestedENTRY(lines 5101 5103) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point lock_sock_nestedEXIT(lines 5101 5103) no Hoare annotation was computed. [2020-10-23 19:10:08,422 INFO L274 CegarLoopResult]: For program point ##fun~$Pointer$~X~int~X~int~TO~intENTRY(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,423 INFO L274 CegarLoopResult]: For program point ##fun~$Pointer$~X~int~X~int~TO~intFINAL(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,423 INFO L274 CegarLoopResult]: For program point ##fun~$Pointer$~X~int~X~int~TO~intEXIT(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,423 INFO L277 CegarLoopResult]: At program point sock_unregisterENTRY(lines 5121 5123) the Hoare annotation is: true [2020-10-23 19:10:08,423 INFO L274 CegarLoopResult]: For program point sock_unregisterEXIT(lines 5121 5123) no Hoare annotation was computed. [2020-10-23 19:10:08,423 INFO L274 CegarLoopResult]: For program point sock_unregisterFINAL(lines 5121 5123) no Hoare annotation was computed. [2020-10-23 19:10:08,423 INFO L274 CegarLoopResult]: For program point pppox_skEXIT(lines 4729 4734) no Hoare annotation was computed. [2020-10-23 19:10:08,424 INFO L274 CegarLoopResult]: For program point pppox_skENTRY(lines 4729 4734) no Hoare annotation was computed. [2020-10-23 19:10:08,424 INFO L274 CegarLoopResult]: For program point pppox_skFINAL(lines 4729 4734) no Hoare annotation was computed. [2020-10-23 19:10:08,424 INFO L277 CegarLoopResult]: At program point ldv_undefined_intENTRY(lines 5098 5100) the Hoare annotation is: true [2020-10-23 19:10:08,424 INFO L274 CegarLoopResult]: For program point ldv_undefined_intEXIT(lines 5098 5100) no Hoare annotation was computed. [2020-10-23 19:10:08,424 INFO L274 CegarLoopResult]: For program point ldv_undefined_intFINAL(lines 5098 5100) no Hoare annotation was computed. [2020-10-23 19:10:08,426 INFO L274 CegarLoopResult]: For program point __request_moduleEXIT(lines 5091 5093) no Hoare annotation was computed. [2020-10-23 19:10:08,426 INFO L274 CegarLoopResult]: For program point __request_moduleENTRY(lines 5091 5093) no Hoare annotation was computed. [2020-10-23 19:10:08,426 INFO L274 CegarLoopResult]: For program point __request_moduleFINAL(lines 5091 5093) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L270 CegarLoopResult]: At program point L4895(line 4895) the Hoare annotation is: (or (not (= |old(~ldv_module_refcounter~0)| 1)) (let ((.cse2 (+ (* pppox_create_~protocol 8) |~#pppox_protos~0.offset|))) (let ((.cse0 (select (select |#memory_$Pointer$.base| |~#pppox_protos~0.base|) .cse2)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |~#pppox_protos~0.base|) .cse2) 16))) (and (= ~ldv_module_refcounter~0 1) (= |pppox_create_#t~mem38.offset| (select (select |#memory_$Pointer$.offset| .cse0) .cse1)) (= |pppox_create_#t~mem38.base| (select (select |#memory_$Pointer$.base| .cse0) .cse1)))))) [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point L4895-1(line 4895) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point L4897(lines 4897 4900) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point L4891(lines 4891 4901) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point L4885-2(lines 4885 4890) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point L4885(lines 4885 4890) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L270 CegarLoopResult]: At program point L4906(lines 4875 4908) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 1) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point pppox_createFINAL(lines 4872 4909) no Hoare annotation was computed. [2020-10-23 19:10:08,428 INFO L274 CegarLoopResult]: For program point L4877(lines 4877 4883) no Hoare annotation was computed. [2020-10-23 19:10:08,429 INFO L274 CegarLoopResult]: For program point L4904-1(line 4904) no Hoare annotation was computed. [2020-10-23 19:10:08,429 INFO L270 CegarLoopResult]: At program point L4904(line 4904) the Hoare annotation is: (or (let ((.cse5 (+ |old(~ldv_module_refcounter~0)| 1))) (and (<= 1 pppox_create_~tmp~2) (<= (+ |pppox_create_#t~mem48.base| |pppox_create_#t~mem48.offset|) (+ (* 18446744073709551616 (div (+ |pppox_create_#t~mem48.base| |pppox_create_#t~mem48.offset| (- 1)) 18446744073709551616)) 18446744073709551615)) (let ((.cse4 (+ (* pppox_create_~protocol 8) |~#pppox_protos~0.offset|))) (let ((.cse2 (select (select |#memory_$Pointer$.base| |~#pppox_protos~0.base|) .cse4)) (.cse3 (+ (select (select |#memory_$Pointer$.offset| |~#pppox_protos~0.base|) .cse4) 16))) (let ((.cse0 (select (select |#memory_$Pointer$.base| .cse2) .cse3)) (.cse1 (select (select |#memory_$Pointer$.offset| .cse2) .cse3))) (<= (+ .cse0 .cse1) (+ (* 18446744073709551616 (div (+ .cse0 .cse1 (- 1)) 18446744073709551616)) 18446744073709551615))))) (<= .cse5 ~ldv_module_refcounter~0) (<= ~ldv_module_refcounter~0 .cse5))) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,429 INFO L270 CegarLoopResult]: At program point pppox_createENTRY(lines 4872 4909) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 1) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,429 INFO L274 CegarLoopResult]: For program point L4880(lines 4880 4883) no Hoare annotation was computed. [2020-10-23 19:10:08,429 INFO L270 CegarLoopResult]: At program point L4903(line 4903) the Hoare annotation is: (or (let ((.cse5 (+ |old(~ldv_module_refcounter~0)| 1))) (and (<= 1 pppox_create_~tmp~2) (let ((.cse4 (+ (* pppox_create_~protocol 8) |~#pppox_protos~0.offset|))) (let ((.cse2 (select (select |#memory_$Pointer$.base| |~#pppox_protos~0.base|) .cse4)) (.cse3 (+ (select (select |#memory_$Pointer$.offset| |~#pppox_protos~0.base|) .cse4) 16))) (let ((.cse0 (select (select |#memory_$Pointer$.base| .cse2) .cse3)) (.cse1 (select (select |#memory_$Pointer$.offset| .cse2) .cse3))) (<= (+ .cse0 .cse1) (+ (* 18446744073709551616 (div (+ .cse0 .cse1 (- 1)) 18446744073709551616)) 18446744073709551615))))) (<= .cse5 ~ldv_module_refcounter~0) (<= ~ldv_module_refcounter~0 .cse5))) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,429 INFO L274 CegarLoopResult]: For program point L4903-1(line 4903) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point pppox_createEXIT(lines 4872 4909) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L277 CegarLoopResult]: At program point ldv_initializeFINAL(lines 5094 5096) the Hoare annotation is: true [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point ldv_initializeEXIT(lines 5094 5096) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point ##fun~$Pointer$~X~$Pointer$~TO~intEXIT(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L277 CegarLoopResult]: At program point ##fun~$Pointer$~X~$Pointer$~TO~intENTRY(line -1) the Hoare annotation is: true [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point ##fun~$Pointer$~X~$Pointer$~TO~intFINAL(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point ldv_module_put_and_exitEXIT(lines 5044 5053) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point L5048(lines 5046 5052) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point ldv_module_put_and_exitENTRY(lines 5044 5053) no Hoare annotation was computed. [2020-10-23 19:10:08,430 INFO L274 CegarLoopResult]: For program point unregister_pppox_protoEXIT(lines 4758 4770) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point L4762(lines 4762 4765) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point unregister_pppox_protoENTRY(lines 4758 4770) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point L4761(lines 4761 4767) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point L4761-1(lines 4758 4770) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point pppox_exitEXIT(lines 4920 4928) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L277 CegarLoopResult]: At program point pppox_exitENTRY(lines 4920 4928) the Hoare annotation is: true [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point pppox_exitFINAL(lines 4920 4928) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point pppox_unbind_sockEXIT(lines 4771 4784) no Hoare annotation was computed. [2020-10-23 19:10:08,431 INFO L274 CegarLoopResult]: For program point pppox_unbind_sockENTRY(lines 4771 4784) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point L4776-1(line 4776) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point L4774(lines 4774 4781) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point L4777(line 4777) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point L4776(line 4776) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point L4777-1(line 4777) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point L4774-2(lines 4771 4784) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point ldv_module_refcountFINAL(lines 5054 5059) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point ldv_module_refcountENTRY(lines 5054 5059) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point ldv_module_refcountEXIT(lines 5054 5059) no Hoare annotation was computed. [2020-10-23 19:10:08,432 INFO L274 CegarLoopResult]: For program point release_sockENTRY(lines 5114 5116) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point release_sockEXIT(lines 5114 5116) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point release_sockFINAL(lines 5114 5116) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point pppox_initFINAL(lines 4911 4919) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L277 CegarLoopResult]: At program point pppox_initENTRY(lines 4911 4919) the Hoare annotation is: true [2020-10-23 19:10:08,433 INFO L277 CegarLoopResult]: At program point L4915(line 4915) the Hoare annotation is: true [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point L4915-1(line 4915) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point pppox_initEXIT(lines 4911 4919) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point L4750(lines 4750 4753) no Hoare annotation was computed. [2020-10-23 19:10:08,433 INFO L274 CegarLoopResult]: For program point L4746(lines 4746 4749) no Hoare annotation was computed. [2020-10-23 19:10:08,434 INFO L274 CegarLoopResult]: For program point L4743(lines 4743 4749) no Hoare annotation was computed. [2020-10-23 19:10:08,434 INFO L274 CegarLoopResult]: For program point register_pppox_protoEXIT(lines 4740 4757) no Hoare annotation was computed. [2020-10-23 19:10:08,434 INFO L274 CegarLoopResult]: For program point register_pppox_protoENTRY(lines 4740 4757) no Hoare annotation was computed. [2020-10-23 19:10:08,434 INFO L274 CegarLoopResult]: For program point register_pppox_protoFINAL(lines 4740 4757) no Hoare annotation was computed. [2020-10-23 19:10:08,434 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,434 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#pppox_protos~0.offset| |old(~#pppox_protos~0.offset)|) (= |old(#t~string1.offset)| |#t~string1.offset|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |#t~string35.base| |old(#t~string35.base)|) (= |old(#length)| |#length|) (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|) (= |old(~#pppox_protos~0.base)| |~#pppox_protos~0.base|) (= |#t~string0.base| |old(#t~string0.base)|) (= |old(#valid)| |#valid|) (= |old(~#pppox_proto_family~0.base)| |~#pppox_proto_family~0.base|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string1.base| |old(#t~string1.base)|) (= |~#pppox_proto_family~0.offset| |old(~#pppox_proto_family~0.offset)|) (= |#t~string35.offset| |old(#t~string35.offset)|) (= |old(~LDV_IN_INTERRUPT~0)| ~LDV_IN_INTERRUPT~0) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-23 19:10:08,435 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,435 INFO L277 CegarLoopResult]: At program point ldv_check_final_stateENTRY(lines 5060 5071) the Hoare annotation is: true [2020-10-23 19:10:08,436 INFO L274 CegarLoopResult]: For program point L5063(lines 5060 5071) no Hoare annotation was computed. [2020-10-23 19:10:08,436 INFO L270 CegarLoopResult]: At program point L5065(line 5065) the Hoare annotation is: (not (= ~ldv_module_refcounter~0 1)) [2020-10-23 19:10:08,436 INFO L274 CegarLoopResult]: For program point ldv_check_final_stateEXIT(lines 5060 5071) no Hoare annotation was computed. [2020-10-23 19:10:08,436 INFO L274 CegarLoopResult]: For program point ppp_unregister_channelEXIT(lines 5111 5113) no Hoare annotation was computed. [2020-10-23 19:10:08,436 INFO L274 CegarLoopResult]: For program point ppp_unregister_channelENTRY(lines 5111 5113) no Hoare annotation was computed. [2020-10-23 19:10:08,436 INFO L274 CegarLoopResult]: For program point ppp_unregister_channelFINAL(lines 5111 5113) no Hoare annotation was computed. [2020-10-23 19:10:08,437 INFO L274 CegarLoopResult]: For program point ppp_channel_indexENTRY(lines 5108 5110) no Hoare annotation was computed. [2020-10-23 19:10:08,437 INFO L274 CegarLoopResult]: For program point ppp_channel_indexEXIT(lines 5108 5110) no Hoare annotation was computed. [2020-10-23 19:10:08,437 INFO L274 CegarLoopResult]: For program point ppp_channel_indexFINAL(lines 5108 5110) no Hoare annotation was computed. [2020-10-23 19:10:08,437 INFO L274 CegarLoopResult]: For program point ldv_try_module_get_1FINAL(lines 5072 5080) no Hoare annotation was computed. [2020-10-23 19:10:08,437 INFO L274 CegarLoopResult]: For program point ldv_try_module_get_1EXIT(lines 5072 5080) no Hoare annotation was computed. [2020-10-23 19:10:08,438 INFO L270 CegarLoopResult]: At program point ldv_try_module_get_1ENTRY(lines 5072 5080) the Hoare annotation is: (or (= ~ldv_module_refcounter~0 1) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,438 INFO L274 CegarLoopResult]: For program point L5076-1(line 5076) no Hoare annotation was computed. [2020-10-23 19:10:08,438 INFO L270 CegarLoopResult]: At program point L5076(line 5076) the Hoare annotation is: (or (and (= ldv_try_module_get_1_~module.base |ldv_try_module_get_1_#in~module.base|) (= ~ldv_module_refcounter~0 1) (= |ldv_try_module_get_1_#in~module.offset| ldv_try_module_get_1_~module.offset)) (not (= |old(~ldv_module_refcounter~0)| 1))) [2020-10-23 19:10:08,438 INFO L277 CegarLoopResult]: At program point sock_registerENTRY(lines 5118 5120) the Hoare annotation is: true [2020-10-23 19:10:08,438 INFO L274 CegarLoopResult]: For program point sock_registerEXIT(lines 5118 5120) no Hoare annotation was computed. [2020-10-23 19:10:08,438 INFO L274 CegarLoopResult]: For program point sock_registerFINAL(lines 5118 5120) no Hoare annotation was computed. [2020-10-23 19:10:08,438 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,438 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= ~ldv_module_refcounter~0 1) [2020-10-23 19:10:08,439 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 19:10:08,439 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 19:10:08,439 INFO L270 CegarLoopResult]: At program point ldv_module_putENTRY(lines 5028 5043) the Hoare annotation is: (or (not (<= 2 |old(~ldv_module_refcounter~0)|)) (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|)) [2020-10-23 19:10:08,439 INFO L274 CegarLoopResult]: For program point ldv_module_putEXIT(lines 5028 5043) no Hoare annotation was computed. [2020-10-23 19:10:08,439 INFO L270 CegarLoopResult]: At program point L5034(line 5034) the Hoare annotation is: (not (<= 2 |old(~ldv_module_refcounter~0)|)) [2020-10-23 19:10:08,439 INFO L274 CegarLoopResult]: For program point L5031(lines 5031 5040) no Hoare annotation was computed. [2020-10-23 19:10:08,439 INFO L274 CegarLoopResult]: For program point L5032-1(lines 5032 5037) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L274 CegarLoopResult]: For program point L5032(lines 5032 5037) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L274 CegarLoopResult]: For program point L5031-2(lines 5028 5043) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L277 CegarLoopResult]: At program point ldv_blast_assertENTRY(lines 4992 4997) the Hoare annotation is: true [2020-10-23 19:10:08,440 INFO L274 CegarLoopResult]: For program point ldv_blast_assertEXIT(lines 4992 4997) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L274 CegarLoopResult]: For program point ldv_blast_assertFINAL(lines 4992 4997) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L274 CegarLoopResult]: For program point L4995(line 4995) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L274 CegarLoopResult]: For program point ldv_module_put_2FINAL(lines 5081 5089) no Hoare annotation was computed. [2020-10-23 19:10:08,440 INFO L270 CegarLoopResult]: At program point L5085(line 5085) the Hoare annotation is: (or (not (<= 2 |old(~ldv_module_refcounter~0)|)) (and (= ldv_module_put_2_~ldv_func_arg1.base |ldv_module_put_2_#in~ldv_func_arg1.base|) (= |ldv_module_put_2_#in~ldv_func_arg1.offset| ldv_module_put_2_~ldv_func_arg1.offset) (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|))) [2020-10-23 19:10:08,441 INFO L274 CegarLoopResult]: For program point ldv_module_put_2EXIT(lines 5081 5089) no Hoare annotation was computed. [2020-10-23 19:10:08,441 INFO L270 CegarLoopResult]: At program point ldv_module_put_2ENTRY(lines 5081 5089) the Hoare annotation is: (or (not (<= 2 |old(~ldv_module_refcounter~0)|)) (= ~ldv_module_refcounter~0 |old(~ldv_module_refcounter~0)|)) [2020-10-23 19:10:08,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:10:08 BoogieIcfgContainer [2020-10-23 19:10:08,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:10:08,479 INFO L168 Benchmark]: Toolchain (without parser) took 16293.12 ms. Allocated memory was 153.1 MB in the beginning and 285.2 MB in the end (delta: 132.1 MB). Free memory was 123.1 MB in the beginning and 192.6 MB in the end (delta: -69.4 MB). Peak memory consumption was 175.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:10:08,480 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:10:08,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1211.23 ms. Allocated memory is still 153.1 MB. Free memory was 122.4 MB in the beginning and 84.5 MB in the end (delta: 37.9 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:10:08,482 INFO L168 Benchmark]: Boogie Preprocessor took 138.96 ms. Allocated memory is still 153.1 MB. Free memory was 84.5 MB in the beginning and 81.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:10:08,483 INFO L168 Benchmark]: RCFGBuilder took 1174.09 ms. Allocated memory was 153.1 MB in the beginning and 223.3 MB in the end (delta: 70.3 MB). Free memory was 81.3 MB in the beginning and 186.1 MB in the end (delta: -104.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. [2020-10-23 19:10:08,487 INFO L168 Benchmark]: TraceAbstraction took 13752.28 ms. Allocated memory was 223.3 MB in the beginning and 285.2 MB in the end (delta: 61.9 MB). Free memory was 185.6 MB in the beginning and 192.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 166.6 MB. Max. memory is 8.0 GB. [2020-10-23 19:10:08,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1211.23 ms. Allocated memory is still 153.1 MB. Free memory was 122.4 MB in the beginning and 84.5 MB in the end (delta: 37.9 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 138.96 ms. Allocated memory is still 153.1 MB. Free memory was 84.5 MB in the beginning and 81.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1174.09 ms. Allocated memory was 153.1 MB in the beginning and 223.3 MB in the end (delta: 70.3 MB). Free memory was 81.3 MB in the beginning and 186.1 MB in the end (delta: -104.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13752.28 ms. Allocated memory was 223.3 MB in the beginning and 285.2 MB in the end (delta: 61.9 MB). Free memory was 185.6 MB in the beginning and 192.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 166.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4941]: Loop Invariant Derived loop invariant: ldv_module_refcounter == 1 || !(\old(ldv_module_refcounter) == 1) - InvariantResult [Line: 4875]: Loop Invariant Derived loop invariant: ldv_module_refcounter == 1 || !(\old(ldv_module_refcounter) == 1) - InvariantResult [Line: 4941]: Loop Invariant Derived loop invariant: ldv_module_refcounter == \old(ldv_module_refcounter) || !(\old(ldv_module_refcounter) == 1) - InvariantResult [Line: 4941]: Loop Invariant Derived loop invariant: ldv_module_refcounter == \old(ldv_module_refcounter) || !(\old(ldv_module_refcounter) == 1) - InvariantResult [Line: 4941]: Loop Invariant Derived loop invariant: ldv_module_refcounter == 1 || !(\old(ldv_module_refcounter) == 1) - InvariantResult [Line: 4956]: Loop Invariant Derived loop invariant: ldv_module_refcounter == \old(ldv_module_refcounter) || !(\old(ldv_module_refcounter) == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 177 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 665 SDtfs, 1007 SDslu, 1153 SDs, 0 SdLazy, 2796 SolverSat, 459 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 389 GetRequests, 297 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 242 PreInvPairs, 262 NumberOfFragments, 562 HoareAnnotationTreeSize, 242 FomulaSimplifications, 3984 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 36 FomulaSimplificationsInter, 1567 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 695 NumberOfCodeBlocks, 695 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 686 ConstructedInterpolants, 0 QuantifiedInterpolants, 199557 SizeOfPredicates, 4 NumberOfNonLiveVariables, 602 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 85/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...