/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/acceleratedInterpolationFastUPR_64.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:37:43,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:37:43,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:37:43,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:37:43,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:37:43,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:37:43,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:37:43,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:37:43,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:37:43,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:37:43,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:37:43,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:37:43,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:37:43,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:37:43,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:37:43,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:37:43,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:37:43,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:37:43,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:37:43,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:37:43,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:37:43,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:37:43,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:37:43,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:37:43,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:37:43,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:37:43,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:37:43,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:37:43,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:37:43,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:37:43,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:37:43,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:37:43,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:37:43,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:37:43,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:37:43,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:37:43,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:37:43,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:37:43,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:37:43,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:37:43,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:37:43,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_64.epf [2020-11-07 02:37:43,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:37:43,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:37:43,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:37:43,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:37:43,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:37:43,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:37:43,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:37:43,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:37:43,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:37:43,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:37:43,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:37:43,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:37:43,207 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:37:43,207 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:37:43,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:37:43,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:37:43,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:37:43,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:37:43,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:37:43,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:37:43,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:37:43,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:37:43,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:37:43,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:37:43,758 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:37:43,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-11-07 02:37:43,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935335ac9/85d474b8df7f480a8d135e2da5fd7644/FLAG95054367d [2020-11-07 02:37:44,849 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:37:44,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-11-07 02:37:44,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935335ac9/85d474b8df7f480a8d135e2da5fd7644/FLAG95054367d [2020-11-07 02:37:45,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935335ac9/85d474b8df7f480a8d135e2da5fd7644 [2020-11-07 02:37:45,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:37:45,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:37:45,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:37:45,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:37:45,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:37:45,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:37:45" (1/1) ... [2020-11-07 02:37:45,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353a72ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:45, skipping insertion in model container [2020-11-07 02:37:45,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:37:45" (1/1) ... [2020-11-07 02:37:45,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:37:45,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:37:46,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:37:46,361 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:37:46,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:37:46,707 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:37:46,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46 WrapperNode [2020-11-07 02:37:46,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:37:46,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:37:46,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:37:46,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:37:46,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... [2020-11-07 02:37:46,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:37:46,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:37:46,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:37:46,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:37:46,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:37:46,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:37:46,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:37:46,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-11-07 02:37:46,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-11-07 02:37:46,927 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:37:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-11-07 02:37:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-11-07 02:37:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-11-07 02:37:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-11-07 02:37:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-11-07 02:37:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-11-07 02:37:46,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-11-07 02:37:46,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-11-07 02:37:46,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-11-07 02:37:46,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:37:46,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-11-07 02:37:46,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-11-07 02:37:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-11-07 02:37:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-11-07 02:37:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-11-07 02:37:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-11-07 02:37:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-11-07 02:37:46,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-11-07 02:37:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-11-07 02:37:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-11-07 02:37:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-11-07 02:37:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-11-07 02:37:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-11-07 02:37:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-11-07 02:37:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-11-07 02:37:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-11-07 02:37:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-11-07 02:37:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-11-07 02:37:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-11-07 02:37:46,932 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-11-07 02:37:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:37:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:37:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 02:37:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 02:37:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:37:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:37:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-11-07 02:37:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-11-07 02:37:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-11-07 02:37:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-11-07 02:37:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-11-07 02:37:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-11-07 02:37:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-11-07 02:37:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-11-07 02:37:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-11-07 02:37:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-11-07 02:37:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-11-07 02:37:46,935 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-11-07 02:37:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-11-07 02:37:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-11-07 02:37:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-11-07 02:37:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-11-07 02:37:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-11-07 02:37:46,936 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-11-07 02:37:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-11-07 02:37:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-11-07 02:37:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-11-07 02:37:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-07 02:37:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-07 02:37:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:37:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:37:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-11-07 02:37:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-11-07 02:37:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-11-07 02:37:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-11-07 02:37:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-11-07 02:37:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-07 02:37:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-11-07 02:37:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:37:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:37:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:37:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-07 02:37:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:37:47,345 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 02:37:47,512 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-11-07 02:37:47,512 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-11-07 02:37:47,512 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-11-07 02:37:47,512 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-11-07 02:37:47,513 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-07 02:37:47,555 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-11-07 02:37:47,555 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-11-07 02:37:47,603 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-11-07 02:37:47,886 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:37:47,886 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:37:47,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:37:47 BoogieIcfgContainer [2020-11-07 02:37:47,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:37:47,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:37:47,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:37:47,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:37:47,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:37:45" (1/3) ... [2020-11-07 02:37:47,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bafb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:37:47, skipping insertion in model container [2020-11-07 02:37:47,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:37:46" (2/3) ... [2020-11-07 02:37:47,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bafb6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:37:47, skipping insertion in model container [2020-11-07 02:37:47,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:37:47" (3/3) ... [2020-11-07 02:37:47,899 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-11-07 02:37:47,914 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:37:47,919 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:37:47,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:37:47,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:37:47,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:37:47,952 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:37:47,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:37:47,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:37:47,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:37:47,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:37:47,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:37:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-11-07 02:37:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 02:37:47,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:37:47,986 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] [2020-11-07 02:37:47,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:37:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:37:47,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2045042801, now seen corresponding path program 1 times [2020-11-07 02:37:48,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:37:48,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592543178] [2020-11-07 02:37:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:37:48,096 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:37:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-07 02:37:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:37:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:48,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 02:37:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:37:48,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592543178] [2020-11-07 02:37:48,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:37:48,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 02:37:48,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628698006] [2020-11-07 02:37:48,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 02:37:48,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:37:48,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 02:37:48,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 02:37:48,625 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-11-07 02:37:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:37:49,578 INFO L93 Difference]: Finished difference Result 440 states and 501 transitions. [2020-11-07 02:37:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 02:37:49,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-07 02:37:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:37:49,597 INFO L225 Difference]: With dead ends: 440 [2020-11-07 02:37:49,597 INFO L226 Difference]: Without dead ends: 299 [2020-11-07 02:37:49,602 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 [2020-11-07 02:37:49,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-07 02:37:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2020-11-07 02:37:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-11-07 02:37:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 319 transitions. [2020-11-07 02:37:49,743 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 319 transitions. Word has length 59 [2020-11-07 02:37:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:37:49,744 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 319 transitions. [2020-11-07 02:37:49,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 02:37:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 319 transitions. [2020-11-07 02:37:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-11-07 02:37:49,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:37:49,751 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, 1, 1] [2020-11-07 02:37:49,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:37:49,752 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:37:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:37:49,753 INFO L82 PathProgramCache]: Analyzing trace with hash -447191702, now seen corresponding path program 1 times [2020-11-07 02:37:49,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:37:49,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602166253] [2020-11-07 02:37:49,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:37:49,763 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:37:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-07 02:37:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:37:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 02:37:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-11-07 02:37:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:37:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-11-07 02:37:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:37:50,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602166253] [2020-11-07 02:37:50,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:37:50,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:37:50,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415200570] [2020-11-07 02:37:50,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:37:50,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:37:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:37:50,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:37:50,284 INFO L87 Difference]: Start difference. First operand 293 states and 319 transitions. Second operand 10 states. [2020-11-07 02:37:51,228 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-11-07 02:37:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:37:51,857 INFO L93 Difference]: Finished difference Result 503 states and 555 transitions. [2020-11-07 02:37:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 02:37:51,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-11-07 02:37:51,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:37:51,862 INFO L225 Difference]: With dead ends: 503 [2020-11-07 02:37:51,862 INFO L226 Difference]: Without dead ends: 263 [2020-11-07 02:37:51,866 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 [2020-11-07 02:37:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-07 02:37:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 250. [2020-11-07 02:37:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-07 02:37:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2020-11-07 02:37:51,948 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 126 [2020-11-07 02:37:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:37:51,949 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2020-11-07 02:37:51,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:37:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2020-11-07 02:37:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-07 02:37:51,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:37:51,953 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, 1, 1] [2020-11-07 02:37:51,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:37:51,953 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:37:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:37:51,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1939745105, now seen corresponding path program 1 times [2020-11-07 02:37:51,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:37:51,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697047273] [2020-11-07 02:37:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:37:51,998 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:37:52,011 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:37:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-07 02:37:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:37:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 02:37:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 02:37:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 02:37:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:37:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:37:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-11-07 02:37:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:37:52,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697047273] [2020-11-07 02:37:52,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:37:52,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:37:52,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089682160] [2020-11-07 02:37:52,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:37:52,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:37:52,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:37:52,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:37:52,408 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 10 states. [2020-11-07 02:37:53,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:37:53,465 INFO L93 Difference]: Finished difference Result 383 states and 415 transitions. [2020-11-07 02:37:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:37:53,465 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2020-11-07 02:37:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:37:53,474 INFO L225 Difference]: With dead ends: 383 [2020-11-07 02:37:53,474 INFO L226 Difference]: Without dead ends: 254 [2020-11-07 02:37:53,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:37:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-07 02:37:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2020-11-07 02:37:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-07 02:37:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 269 transitions. [2020-11-07 02:37:53,556 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 269 transitions. Word has length 135 [2020-11-07 02:37:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:37:53,560 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 269 transitions. [2020-11-07 02:37:53,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:37:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 269 transitions. [2020-11-07 02:37:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 02:37:53,572 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:37:53,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:37:53,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:37:53,573 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:37:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:37:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1791393763, now seen corresponding path program 1 times [2020-11-07 02:37:53,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:37:53,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230102961] [2020-11-07 02:37:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:37:53,587 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:37:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-07 02:37:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:37:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 02:37:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-11-07 02:37:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:37:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:37:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:37:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:37:53,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230102961] [2020-11-07 02:37:53,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:37:53,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:37:53,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864778521] [2020-11-07 02:37:53,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:37:53,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:37:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:37:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:37:53,951 INFO L87 Difference]: Start difference. First operand 250 states and 269 transitions. Second operand 7 states. [2020-11-07 02:37:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:37:55,310 INFO L93 Difference]: Finished difference Result 392 states and 423 transitions. [2020-11-07 02:37:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 02:37:55,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-11-07 02:37:55,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:37:55,314 INFO L225 Difference]: With dead ends: 392 [2020-11-07 02:37:55,314 INFO L226 Difference]: Without dead ends: 387 [2020-11-07 02:37:55,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:37:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-11-07 02:37:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2020-11-07 02:37:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-11-07 02:37:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 401 transitions. [2020-11-07 02:37:55,390 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 401 transitions. Word has length 137 [2020-11-07 02:37:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:37:55,391 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 401 transitions. [2020-11-07 02:37:55,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:37:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 401 transitions. [2020-11-07 02:37:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-11-07 02:37:55,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:37:55,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:37:55,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:37:55,398 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:37:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:37:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash -735301059, now seen corresponding path program 1 times [2020-11-07 02:37:55,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:37:55,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665113769] [2020-11-07 02:37:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:37:55,432 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:37:55,439 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:37:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-07 02:37:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-11-07 02:37:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 02:37:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 02:37:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 02:37:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:37:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:37:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:37:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 02:37:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-07 02:37:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 02:37:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:37:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:37:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:37:56,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665113769] [2020-11-07 02:37:56,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:37:56,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 02:37:56,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967826355] [2020-11-07 02:37:56,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 02:37:56,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:37:56,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 02:37:56,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:37:56,377 INFO L87 Difference]: Start difference. First operand 369 states and 401 transitions. Second operand 17 states. [2020-11-07 02:37:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:37:59,965 INFO L93 Difference]: Finished difference Result 576 states and 619 transitions. [2020-11-07 02:37:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-07 02:37:59,968 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-11-07 02:37:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:37:59,972 INFO L225 Difference]: With dead ends: 576 [2020-11-07 02:37:59,972 INFO L226 Difference]: Without dead ends: 320 [2020-11-07 02:37:59,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 02:37:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-11-07 02:38:00,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 286. [2020-11-07 02:38:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-11-07 02:38:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 304 transitions. [2020-11-07 02:38:00,036 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 304 transitions. Word has length 160 [2020-11-07 02:38:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:38:00,037 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 304 transitions. [2020-11-07 02:38:00,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 02:38:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 304 transitions. [2020-11-07 02:38:00,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-11-07 02:38:00,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:38:00,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:38:00,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:38:00,041 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:38:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:38:00,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1542049195, now seen corresponding path program 1 times [2020-11-07 02:38:00,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:38:00,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480297834] [2020-11-07 02:38:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:38:01,577 WARN L194 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 247 DAG size of output: 219 [2020-11-07 02:38:01,992 WARN L194 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-11-07 02:38:02,365 WARN L194 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-11-07 02:38:02,621 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.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) at de.uni_freiburg.informatik.ultimate.icfgtransformer.loopacceleration.fastupr.FastUPRCore.(FastUPRCore.java:133) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.fastUprAcceleration(Accelerator.java:109) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.loopaccelerator.Accelerator.accelerateLoop(Accelerator.java:89) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:292) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) 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:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) 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) [2020-11-07 02:38:02,630 INFO L168 Benchmark]: Toolchain (without parser) took 17346.91 ms. Allocated memory was 152.0 MB in the beginning and 361.8 MB in the end (delta: 209.7 MB). Free memory was 122.1 MB in the beginning and 260.0 MB in the end (delta: -137.9 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:38:02,632 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 125.8 MB. Free memory is still 104.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:38:02,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1421.13 ms. Allocated memory is still 152.0 MB. Free memory was 121.5 MB in the beginning and 112.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:38:02,633 INFO L168 Benchmark]: Boogie Preprocessor took 142.11 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 109.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:38:02,634 INFO L168 Benchmark]: RCFGBuilder took 1036.74 ms. Allocated memory was 152.0 MB in the beginning and 208.7 MB in the end (delta: 56.6 MB). Free memory was 109.3 MB in the beginning and 166.6 MB in the end (delta: -57.3 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:38:02,635 INFO L168 Benchmark]: TraceAbstraction took 14734.16 ms. Allocated memory was 208.7 MB in the beginning and 361.8 MB in the end (delta: 153.1 MB). Free memory was 166.6 MB in the beginning and 260.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:38:02,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 125.8 MB. Free memory is still 104.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1421.13 ms. Allocated memory is still 152.0 MB. Free memory was 121.5 MB in the beginning and 112.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.11 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 109.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1036.74 ms. Allocated memory was 152.0 MB in the beginning and 208.7 MB in the end (delta: 56.6 MB). Free memory was 109.3 MB in the beginning and 166.6 MB in the end (delta: -57.3 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14734.16 ms. Allocated memory was 208.7 MB in the beginning and 361.8 MB in the end (delta: 153.1 MB). Free memory was 166.6 MB in the beginning and 260.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 59.7 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.icfgtransformer.loopacceleration.fastupr.paraoct.OctagonCalculator.normalizeVarNames(OctagonCalculator.java:153) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...