/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-36cd7be [2021-02-24 05:07:49,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 05:07:49,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 05:07:49,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 05:07:49,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 05:07:49,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 05:07:49,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 05:07:49,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 05:07:49,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 05:07:49,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 05:07:49,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 05:07:49,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 05:07:49,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 05:07:49,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 05:07:49,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 05:07:49,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 05:07:49,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 05:07:49,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 05:07:49,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 05:07:49,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 05:07:49,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 05:07:49,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 05:07:49,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 05:07:49,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 05:07:49,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 05:07:49,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 05:07:49,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 05:07:49,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 05:07:49,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 05:07:49,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 05:07:49,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 05:07:49,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 05:07:49,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 05:07:49,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 05:07:49,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 05:07:49,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 05:07:49,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 05:07:49,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 05:07:49,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 05:07:49,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 05:07:49,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 05:07:49,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_64.epf [2021-02-24 05:07:49,264 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 05:07:49,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 05:07:49,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 05:07:49,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 05:07:49,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 05:07:49,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 05:07:49,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 05:07:49,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 05:07:49,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 05:07:49,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 05:07:49,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 05:07:49,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 05:07:49,273 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 05:07:49,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 05:07:49,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 05:07:49,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 05:07:49,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 05:07:49,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 05:07:49,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 05:07:49,275 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 05:07:49,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 05:07:49,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 05:07:49,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 05:07:49,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 05:07:49,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 05:07:49,764 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 05:07:49,765 INFO L432 ainManager$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 [2021-02-24 05:07:49,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d102801e/35904dcc6a5d4e34bfcc504a66a71fe6/FLAG1129e83a1 [2021-02-24 05:07:50,819 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 05:07:50,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2021-02-24 05:07:50,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d102801e/35904dcc6a5d4e34bfcc504a66a71fe6/FLAG1129e83a1 [2021-02-24 05:07:51,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d102801e/35904dcc6a5d4e34bfcc504a66a71fe6 [2021-02-24 05:07:51,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 05:07:51,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 05:07:51,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 05:07:51,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 05:07:51,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 05:07:51,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 05:07:51" (1/1) ... [2021-02-24 05:07:51,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d5d913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:51, skipping insertion in model container [2021-02-24 05:07:51,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 05:07:51" (1/1) ... [2021-02-24 05:07:51,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 05:07:51,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 05:07:52,254 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] [2021-02-24 05:07:52,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 05:07:52,292 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 05:07:52,660 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] [2021-02-24 05:07:52,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 05:07:52,716 INFO L208 MainTranslator]: Completed translation [2021-02-24 05:07:52,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52 WrapperNode [2021-02-24 05:07:52,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 05:07:52,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 05:07:52,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 05:07:52,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 05:07:52,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (1/1) ... [2021-02-24 05:07:52,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 05:07:52,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 05:07:52,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 05:07:52,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 05:07:52,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (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 [2021-02-24 05:07:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 05:07:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 05:07:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-02-24 05:07:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-02-24 05:07:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 05:07:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2021-02-24 05:07:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2021-02-24 05:07:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2021-02-24 05:07:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2021-02-24 05:07:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2021-02-24 05:07:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2021-02-24 05:07:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2021-02-24 05:07:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2021-02-24 05:07:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2021-02-24 05:07:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 05:07:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-02-24 05:07:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2021-02-24 05:07:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-02-24 05:07:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-02-24 05:07:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2021-02-24 05:07:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2021-02-24 05:07:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-24 05:07:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2021-02-24 05:07:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2021-02-24 05:07:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2021-02-24 05:07:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-24 05:07:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2021-02-24 05:07:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2021-02-24 05:07:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-02-24 05:07:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2021-02-24 05:07:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-02-24 05:07:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2021-02-24 05:07:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2021-02-24 05:07:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2021-02-24 05:07:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-02-24 05:07:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 05:07:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 05:07:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 05:07:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 05:07:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-02-24 05:07:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-02-24 05:07:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2021-02-24 05:07:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2021-02-24 05:07:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-02-24 05:07:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2021-02-24 05:07:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2021-02-24 05:07:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-24 05:07:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-24 05:07:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 05:07:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 05:07:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 05:07:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-24 05:07:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 05:07:53,313 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 05:07:53,430 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-02-24 05:07:53,431 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-02-24 05:07:53,431 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-02-24 05:07:53,431 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-02-24 05:07:53,433 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-02-24 05:07:53,457 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-02-24 05:07:53,457 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-02-24 05:07:53,486 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2021-02-24 05:07:53,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 05:07:53,797 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 05:07:53,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 05:07:53 BoogieIcfgContainer [2021-02-24 05:07:53,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 05:07:53,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 05:07:53,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 05:07:53,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 05:07:53,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 05:07:51" (1/3) ... [2021-02-24 05:07:53,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b21a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 05:07:53, skipping insertion in model container [2021-02-24 05:07:53,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 05:07:52" (2/3) ... [2021-02-24 05:07:53,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b21a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 05:07:53, skipping insertion in model container [2021-02-24 05:07:53,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 05:07:53" (3/3) ... [2021-02-24 05:07:53,832 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2021-02-24 05:07:53,845 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 05:07:53,854 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 05:07:53,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 05:07:53,944 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 05:07:53,944 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 05:07:53,944 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 05:07:53,945 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 05:07:53,945 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 05:07:53,945 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 05:07:53,945 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 05:07:53,945 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 05:07:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2021-02-24 05:07:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-24 05:07:53,976 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 05:07:53,977 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] [2021-02-24 05:07:53,978 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 05:07:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 05:07:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1261740688, now seen corresponding path program 1 times [2021-02-24 05:07:53,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 05:07:53,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757065781] [2021-02-24 05:07:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 05:07:54,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 05:07:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:54,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 05:07:54,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 05:07:54,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:54,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 05:07:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:54,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:54,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 05:07:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 05:07:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:54,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-24 05:07:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:54,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 05:07:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:54,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:54,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 05:07:54,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757065781] [2021-02-24 05:07:54,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 05:07:54,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 05:07:54,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893547678] [2021-02-24 05:07:54,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 05:07:54,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 05:07:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 05:07:54,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 05:07:54,696 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2021-02-24 05:07:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 05:07:55,474 INFO L93 Difference]: Finished difference Result 431 states and 487 transitions. [2021-02-24 05:07:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 05:07:55,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2021-02-24 05:07:55,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 05:07:55,492 INFO L225 Difference]: With dead ends: 431 [2021-02-24 05:07:55,493 INFO L226 Difference]: Without dead ends: 295 [2021-02-24 05:07:55,497 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 [2021-02-24 05:07:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-24 05:07:55,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 291. [2021-02-24 05:07:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2021-02-24 05:07:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2021-02-24 05:07:55,628 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 57 [2021-02-24 05:07:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 05:07:55,629 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2021-02-24 05:07:55,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 05:07:55,629 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2021-02-24 05:07:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-02-24 05:07:55,635 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 05:07:55,635 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] [2021-02-24 05:07:55,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 05:07:55,636 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 05:07:55,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 05:07:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash -976874129, now seen corresponding path program 1 times [2021-02-24 05:07:55,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 05:07:55,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965283380] [2021-02-24 05:07:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 05:07:55,645 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 05:07:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 05:07:55,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 05:07:55,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 05:07:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-24 05:07:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-24 05:07:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 05:07:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-02-24 05:07:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 05:07:55,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 05:07:55,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 05:07:55,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 05:07:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:55,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 05:07:55,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 05:07:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 05:07:55,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 05:07:55,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 05:07:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 05:07:56,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965283380] [2021-02-24 05:07:56,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 05:07:56,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 05:07:56,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664431467] [2021-02-24 05:07:56,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 05:07:56,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 05:07:56,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 05:07:56,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-24 05:07:56,014 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand 10 states. [2021-02-24 05:07:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 05:07:57,229 INFO L93 Difference]: Finished difference Result 499 states and 551 transitions. [2021-02-24 05:07:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 05:07:57,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2021-02-24 05:07:57,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 05:07:57,240 INFO L225 Difference]: With dead ends: 499 [2021-02-24 05:07:57,240 INFO L226 Difference]: Without dead ends: 261 [2021-02-24 05:07:57,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-02-24 05:07:57,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-02-24 05:07:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 248. [2021-02-24 05:07:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-24 05:07:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2021-02-24 05:07:57,324 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 124 [2021-02-24 05:07:57,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 05:07:57,325 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2021-02-24 05:07:57,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 05:07:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2021-02-24 05:07:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-02-24 05:07:57,328 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 05:07:57,328 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] [2021-02-24 05:07:57,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 05:07:57,329 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 05:07:57,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 05:07:57,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2115492300, now seen corresponding path program 1 times [2021-02-24 05:07:57,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 05:07:57,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247326345] [2021-02-24 05:07:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 05:07:57,394 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) [2021-02-24 05:07:57,407 INFO L168 Benchmark]: Toolchain (without parser) took 6050.13 ms. Allocated memory was 151.0 MB in the beginning and 248.5 MB in the end (delta: 97.5 MB). Free memory was 120.8 MB in the beginning and 141.4 MB in the end (delta: -20.7 MB). Peak memory consumption was 78.2 MB. Max. memory is 8.0 GB. [2021-02-24 05:07:57,408 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.3 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 05:07:57,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1348.67 ms. Allocated memory is still 151.0 MB. Free memory was 119.4 MB in the beginning and 110.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2021-02-24 05:07:57,410 INFO L168 Benchmark]: Boogie Preprocessor took 113.77 ms. Allocated memory is still 151.0 MB. Free memory was 110.1 MB in the beginning and 106.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 05:07:57,411 INFO L168 Benchmark]: RCFGBuilder took 971.52 ms. Allocated memory was 151.0 MB in the beginning and 206.6 MB in the end (delta: 55.6 MB). Free memory was 106.4 MB in the beginning and 134.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. [2021-02-24 05:07:57,416 INFO L168 Benchmark]: TraceAbstraction took 3595.48 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 134.2 MB in the beginning and 141.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-24 05:07:57,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.3 MB in the end (delta: 436.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1348.67 ms. Allocated memory is still 151.0 MB. Free memory was 119.4 MB in the beginning and 110.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.77 ms. Allocated memory is still 151.0 MB. Free memory was 110.1 MB in the beginning and 106.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 971.52 ms. Allocated memory was 151.0 MB in the beginning and 206.6 MB in the end (delta: 55.6 MB). Free memory was 106.4 MB in the beginning and 134.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3595.48 ms. Allocated memory was 206.6 MB in the beginning and 248.5 MB in the end (delta: 41.9 MB). Free memory was 134.2 MB in the beginning and 141.4 MB in the end (delta: -7.2 MB). Peak memory consumption was 35.8 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...