/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/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_64.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:42:03,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:42:03,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:42:03,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:42:03,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:42:03,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:42:03,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:42:03,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:42:03,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:42:03,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:42:03,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:42:03,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:42:03,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:42:03,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:42:03,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:42:03,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:42:03,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:42:03,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:42:03,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:42:03,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:42:03,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:42:03,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:42:03,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:42:03,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:42:03,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:42:03,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:42:03,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:42:03,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:42:03,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:42:03,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:42:03,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:42:03,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:42:03,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:42:03,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:42:03,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:42:03,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:42:03,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:42:03,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:42:03,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:42:03,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:42:03,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:42:03,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_64.epf [2021-02-22 02:42:03,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:42:03,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:42:03,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:42:03,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:42:03,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:42:03,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:42:03,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:42:03,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:42:03,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:42:03,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:42:03,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:42:03,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:42:03,867 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:42:03,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:42:03,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:42:03,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:42:03,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:42:03,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:42:03,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:42:03,869 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:42:03,870 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:42:04,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:42:04,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:42:04,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:42:04,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:42:04,368 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:42:04,370 INFO L432 ainManager$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 [2021-02-22 02:42:04,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b25db5aed/e31dd1b282d5414dadd05b71f6c26d50/FLAG3452a904b [2021-02-22 02:42:05,396 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:42:05,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2021-02-22 02:42:05,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b25db5aed/e31dd1b282d5414dadd05b71f6c26d50/FLAG3452a904b [2021-02-22 02:42:05,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b25db5aed/e31dd1b282d5414dadd05b71f6c26d50 [2021-02-22 02:42:05,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:42:05,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:42:05,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:42:05,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:42:05,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:42:05,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:42:05" (1/1) ... [2021-02-22 02:42:05,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5e255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:05, skipping insertion in model container [2021-02-22 02:42:05,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:42:05" (1/1) ... [2021-02-22 02:42:05,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:42:05,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:42:06,289 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i[141033,141046] [2021-02-22 02:42:06,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:42:06,332 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:42:06,579 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i[141033,141046] [2021-02-22 02:42:06,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:42:06,621 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:42:06,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06 WrapperNode [2021-02-22 02:42:06,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:42:06,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:42:06,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:42:06,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:42:06,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (1/1) ... [2021-02-22 02:42:06,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:42:06,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:42:06,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:42:06,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:42:06,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (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 [2021-02-22 02:42:06,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:42:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:42:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-02-22 02:42:06,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-02-22 02:42:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:42:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2021-02-22 02:42:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2021-02-22 02:42:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2021-02-22 02:42:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2021-02-22 02:42:06,827 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2021-02-22 02:42:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2021-02-22 02:42:06,828 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2021-02-22 02:42:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2021-02-22 02:42:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2021-02-22 02:42:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:42:06,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-02-22 02:42:06,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2021-02-22 02:42:06,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-02-22 02:42:06,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-02-22 02:42:06,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2021-02-22 02:42:06,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2021-02-22 02:42:06,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-22 02:42:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2021-02-22 02:42:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2021-02-22 02:42:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2021-02-22 02:42:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-22 02:42:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2021-02-22 02:42:06,835 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2021-02-22 02:42:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-02-22 02:42:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2021-02-22 02:42:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-02-22 02:42:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2021-02-22 02:42:06,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2021-02-22 02:42:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2021-02-22 02:42:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-02-22 02:42:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:42:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:42:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:42:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:42:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:42:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:42:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-02-22 02:42:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2021-02-22 02:42:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2021-02-22 02:42:06,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2021-02-22 02:42:06,839 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2021-02-22 02:42:06,840 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2021-02-22 02:42:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2021-02-22 02:42:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2021-02-22 02:42:06,841 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2021-02-22 02:42:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:42:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:42:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:42:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:42:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-02-22 02:42:06,842 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2021-02-22 02:42:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-02-22 02:42:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2021-02-22 02:42:06,843 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2021-02-22 02:42:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-22 02:42:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-22 02:42:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:42:06,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:42:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-02-22 02:42:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2021-02-22 02:42:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:42:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-02-22 02:42:06,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:42:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:42:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:42:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-22 02:42:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:42:07,357 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 02:42:07,598 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-02-22 02:42:07,599 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-02-22 02:42:07,599 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-02-22 02:42:07,599 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-02-22 02:42:07,600 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-22 02:42:07,635 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-02-22 02:42:07,635 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-02-22 02:42:07,679 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2021-02-22 02:42:08,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:42:08,066 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:42:08,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:42:08 BoogieIcfgContainer [2021-02-22 02:42:08,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:42:08,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:42:08,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:42:08,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:42:08,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:42:05" (1/3) ... [2021-02-22 02:42:08,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83d3e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:42:08, skipping insertion in model container [2021-02-22 02:42:08,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:42:06" (2/3) ... [2021-02-22 02:42:08,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83d3e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:42:08, skipping insertion in model container [2021-02-22 02:42:08,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:42:08" (3/3) ... [2021-02-22 02:42:08,080 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2021-02-22 02:42:08,089 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:42:08,097 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:42:08,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:42:08,213 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:42:08,213 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:42:08,214 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:42:08,214 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:42:08,217 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:42:08,217 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:42:08,217 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:42:08,218 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:42:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2021-02-22 02:42:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-22 02:42:08,268 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:42:08,269 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] [2021-02-22 02:42:08,270 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:42:08,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:42:08,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1261740688, now seen corresponding path program 1 times [2021-02-22 02:42:08,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:42:08,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553374307] [2021-02-22 02:42:08,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:42:08,399 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:42:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:08,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:42:08,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:42:08,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:42:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:08,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:08,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:42:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-22 02:42:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:08,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-22 02:42:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:08,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 02:42:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:08,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:08,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:42:09,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553374307] [2021-02-22 02:42:09,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:42:09,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:42:09,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404785997] [2021-02-22 02:42:09,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:42:09,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:42:09,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:42:09,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:42:09,044 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2021-02-22 02:42:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:42:10,123 INFO L93 Difference]: Finished difference Result 431 states and 487 transitions. [2021-02-22 02:42:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:42:10,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2021-02-22 02:42:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:42:10,152 INFO L225 Difference]: With dead ends: 431 [2021-02-22 02:42:10,152 INFO L226 Difference]: Without dead ends: 295 [2021-02-22 02:42:10,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:42:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-22 02:42:10,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2021-02-22 02:42:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-02-22 02:42:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2021-02-22 02:42:10,278 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 57 [2021-02-22 02:42:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:42:10,279 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2021-02-22 02:42:10,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:42:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2021-02-22 02:42:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-02-22 02:42:10,285 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:42:10,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:42:10,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:42:10,286 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:42:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:42:10,287 INFO L82 PathProgramCache]: Analyzing trace with hash -976874129, now seen corresponding path program 1 times [2021-02-22 02:42:10,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:42:10,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134829312] [2021-02-22 02:42:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:42:10,295 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:42:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:42:10,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:42:10,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:42:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-22 02:42:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-22 02:42:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-22 02:42:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-02-22 02:42:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:42:10,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:42:10,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:42:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:42:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:42:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 02:42:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:42:10,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:42:10,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:42:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:42:10,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134829312] [2021-02-22 02:42:10,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:42:10,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 02:42:10,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636967168] [2021-02-22 02:42:10,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 02:42:10,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:42:10,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 02:42:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-22 02:42:10,839 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand 10 states. [2021-02-22 02:42:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:42:12,269 INFO L93 Difference]: Finished difference Result 499 states and 551 transitions. [2021-02-22 02:42:12,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 02:42:12,270 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2021-02-22 02:42:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:42:12,274 INFO L225 Difference]: With dead ends: 499 [2021-02-22 02:42:12,274 INFO L226 Difference]: Without dead ends: 261 [2021-02-22 02:42:12,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-02-22 02:42:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-02-22 02:42:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 248. [2021-02-22 02:42:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-22 02:42:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2021-02-22 02:42:12,343 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 124 [2021-02-22 02:42:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:42:12,344 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2021-02-22 02:42:12,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 02:42:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2021-02-22 02:42:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-02-22 02:42:12,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:42:12,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:42:12,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:42:12,348 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:42:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:42:12,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2115492300, now seen corresponding path program 1 times [2021-02-22 02:42:12,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:42:12,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424968499] [2021-02-22 02:42:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:42:12,402 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-22 02:42:12,406 INFO L168 Benchmark]: Toolchain (without parser) took 6927.55 ms. Allocated memory was 155.2 MB in the beginning and 217.1 MB in the end (delta: 61.9 MB). Free memory was 126.0 MB in the beginning and 124.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 64.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:42:12,407 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 155.2 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:42:12,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1127.55 ms. Allocated memory is still 155.2 MB. Free memory was 124.9 MB in the beginning and 87.7 MB in the end (delta: 37.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:42:12,409 INFO L168 Benchmark]: Boogie Preprocessor took 82.24 ms. Allocated memory is still 155.2 MB. Free memory was 87.7 MB in the beginning and 84.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:42:12,410 INFO L168 Benchmark]: RCFGBuilder took 1363.20 ms. Allocated memory was 155.2 MB in the beginning and 217.1 MB in the end (delta: 61.9 MB). Free memory was 84.6 MB in the beginning and 174.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:42:12,411 INFO L168 Benchmark]: TraceAbstraction took 4333.32 ms. Allocated memory is still 217.1 MB. Free memory was 174.1 MB in the beginning and 124.1 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:42:12,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 155.2 MB. Free memory is still 133.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1127.55 ms. Allocated memory is still 155.2 MB. Free memory was 124.9 MB in the beginning and 87.7 MB in the end (delta: 37.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.24 ms. Allocated memory is still 155.2 MB. Free memory was 87.7 MB in the beginning and 84.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1363.20 ms. Allocated memory was 155.2 MB in the beginning and 217.1 MB in the end (delta: 61.9 MB). Free memory was 84.6 MB in the beginning and 174.6 MB in the end (delta: -90.0 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4333.32 ms. Allocated memory is still 217.1 MB. Free memory was 174.1 MB in the beginning and 124.1 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...