/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-b8ad66e [2020-10-23 22:26:21,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:26:21,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:26:21,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:26:21,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:26:21,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:26:21,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:26:21,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:26:21,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:26:21,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:26:21,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:26:21,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:26:21,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:26:21,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:26:21,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:26:21,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:26:21,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:26:21,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:26:21,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:26:21,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:26:21,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:26:21,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:26:21,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:26:21,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:26:21,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:26:21,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:26:21,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:26:21,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:26:21,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:26:21,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:26:21,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:26:21,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:26:21,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:26:21,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:26:21,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:26:21,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:26:21,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:26:21,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:26:21,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:26:21,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:26:21,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:26:21,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_64.epf [2020-10-23 22:26:21,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:26:21,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:26:21,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:26:21,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:26:21,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:26:21,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:26:21,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:26:21,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:26:21,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:26:21,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:26:21,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:26:21,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:26:21,352 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:26:21,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:26:21,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:26:21,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:26:21,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:26:21,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:26:21,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:26:21,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:26:21,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:26:21,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:26:21,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:26:21,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:26:21,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:26:21,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-10-23 22:26:21,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc5992e4/57ce90c7cd6447eba366dd2f0250e857/FLAG3114fb345 [2020-10-23 22:26:22,949 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:26:22,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/module_get_put-drivers-net-pppox.ko.cil.out.i [2020-10-23 22:26:22,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc5992e4/57ce90c7cd6447eba366dd2f0250e857/FLAG3114fb345 [2020-10-23 22:26:23,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc5992e4/57ce90c7cd6447eba366dd2f0250e857 [2020-10-23 22:26:23,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:26:23,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:26:23,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:26:23,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:26:23,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:26:23,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:26:23" (1/1) ... [2020-10-23 22:26:23,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e77f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:23, skipping insertion in model container [2020-10-23 22:26:23,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:26:23" (1/1) ... [2020-10-23 22:26:23,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:26:23,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:26:23,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:26:23,940 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:26:24,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:26:24,301 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:26:24,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24 WrapperNode [2020-10-23 22:26:24,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:26:24,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:26:24,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:26:24,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:26:24,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... [2020-10-23 22:26:24,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:26:24,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:26:24,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:26:24,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:26:24,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:26:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:26:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:26:24,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-10-23 22:26:24,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-10-23 22:26:24,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:26:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock [2020-10-23 22:26:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_sk [2020-10-23 22:26:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure register_pppox_proto [2020-10-23 22:26:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_pppox_proto [2020-10-23 22:26:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_unbind_sock [2020-10-23 22:26:24,525 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_ioctl [2020-10-23 22:26:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_create [2020-10-23 22:26:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_init [2020-10-23 22:26:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pppox_exit [2020-10-23 22:26:24,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:26:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2020-10-23 22:26:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-10-23 22:26:24,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-10-23 22:26:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-10-23 22:26:24,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-10-23 22:26:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-10-23 22:26:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-10-23 22:26:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get_1 [2020-10-23 22:26:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_2 [2020-10-23 22:26:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_module [2020-10-23 22:26:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-10-23 22:26:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_int [2020-10-23 22:26:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_sock_nested [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_index [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure release_sock [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_register [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sock_unregister [2020-10-23 22:26:24,532 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2020-10-23 22:26:24,533 INFO L130 BoogieDeclarations]: Found specification of procedure __request_module [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get_1 [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_2 [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-10-23 22:26:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure sock_register [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure sock_unregister [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_index [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock_nested [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure lock_sock [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure release_sock [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_sk [2020-10-23 22:26:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure register_pppox_proto [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_pppox_proto [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_unbind_sock [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_ioctl [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:26:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2020-10-23 22:26:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_create [2020-10-23 22:26:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-10-23 22:26:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_init [2020-10-23 22:26:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure pppox_exit [2020-10-23 22:26:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-10-23 22:26:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-10-23 22:26:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:26:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:26:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2020-10-23 22:26:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_int [2020-10-23 22:26:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 22:26:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-10-23 22:26:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:26:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:26:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:26:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-23 22:26:24,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:26:25,096 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 22:26:25,237 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-23 22:26:25,237 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-23 22:26:25,237 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-23 22:26:25,238 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-23 22:26:25,239 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-23 22:26:25,280 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2020-10-23 22:26:25,280 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2020-10-23 22:26:25,322 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-10-23 22:26:25,609 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:26:25,610 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:26:25,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:26:25 BoogieIcfgContainer [2020-10-23 22:26:25,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:26:25,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:26:25,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:26:25,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:26:25,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:26:23" (1/3) ... [2020-10-23 22:26:25,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa9fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:26:25, skipping insertion in model container [2020-10-23 22:26:25,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:26:24" (2/3) ... [2020-10-23 22:26:25,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa9fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:26:25, skipping insertion in model container [2020-10-23 22:26:25,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:26:25" (3/3) ... [2020-10-23 22:26:25,623 INFO L111 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-net-pppox.ko.cil.out.i [2020-10-23 22:26:25,637 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:26:25,643 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:26:25,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:26:25,686 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:26:25,686 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:26:25,686 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:26:25,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:26:25,687 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:26:25,688 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:26:25,688 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:26:25,688 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:26:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-10-23 22:26:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-23 22:26:25,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:26:25,733 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] [2020-10-23 22:26:25,733 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:26:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:26:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2045042801, now seen corresponding path program 1 times [2020-10-23 22:26:25,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:26:25,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311636903] [2020-10-23 22:26:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:26:25,889 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:26:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 22:26:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 22:26:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 22:26:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:26:26,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311636903] [2020-10-23 22:26:26,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:26:26,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:26:26,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368901633] [2020-10-23 22:26:26,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:26:26,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:26:26,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:26:26,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:26:26,458 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-10-23 22:26:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:26:27,501 INFO L93 Difference]: Finished difference Result 440 states and 501 transitions. [2020-10-23 22:26:27,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:26:27,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-23 22:26:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:26:27,521 INFO L225 Difference]: With dead ends: 440 [2020-10-23 22:26:27,521 INFO L226 Difference]: Without dead ends: 299 [2020-10-23 22:26:27,526 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 [2020-10-23 22:26:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-23 22:26:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 293. [2020-10-23 22:26:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-23 22:26:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 319 transitions. [2020-10-23 22:26:27,655 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 319 transitions. Word has length 59 [2020-10-23 22:26:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:26:27,656 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 319 transitions. [2020-10-23 22:26:27,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:26:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 319 transitions. [2020-10-23 22:26:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-23 22:26:27,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:26:27,664 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] [2020-10-23 22:26:27,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:26:27,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:26:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:26:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash -447191702, now seen corresponding path program 1 times [2020-10-23 22:26:27,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:26:27,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76747439] [2020-10-23 22:26:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:26:27,675 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:26:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:27,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 22:26:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:27,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 22:26:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:27,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 22:26:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 22:26:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:28,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:26:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 22:26:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:26:28,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76747439] [2020-10-23 22:26:28,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:26:28,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:26:28,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241304480] [2020-10-23 22:26:28,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:26:28,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:26:28,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:26:28,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:26:28,085 INFO L87 Difference]: Start difference. First operand 293 states and 319 transitions. Second operand 10 states. [2020-10-23 22:26:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:26:29,743 INFO L93 Difference]: Finished difference Result 503 states and 555 transitions. [2020-10-23 22:26:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 22:26:29,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-10-23 22:26:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:26:29,747 INFO L225 Difference]: With dead ends: 503 [2020-10-23 22:26:29,748 INFO L226 Difference]: Without dead ends: 263 [2020-10-23 22:26:29,751 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 [2020-10-23 22:26:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-23 22:26:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 250. [2020-10-23 22:26:29,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-23 22:26:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2020-10-23 22:26:29,828 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 126 [2020-10-23 22:26:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:26:29,829 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2020-10-23 22:26:29,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:26:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2020-10-23 22:26:29,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-23 22:26:29,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:26:29,832 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] [2020-10-23 22:26:29,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:26:29,833 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:26:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:26:29,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1939745105, now seen corresponding path program 1 times [2020-10-23 22:26:29,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:26:29,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973822422] [2020-10-23 22:26:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:26:29,950 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:26:29,955 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:26:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 22:26:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 22:26:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 22:26:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-23 22:26:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 22:26:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:26:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:26:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-23 22:26:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:26:30,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973822422] [2020-10-23 22:26:30,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:26:30,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:26:30,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401103856] [2020-10-23 22:26:30,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:26:30,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:26:30,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:26:30,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:26:30,301 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 10 states. [2020-10-23 22:26:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:26:31,327 INFO L93 Difference]: Finished difference Result 383 states and 415 transitions. [2020-10-23 22:26:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 22:26:31,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2020-10-23 22:26:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:26:31,342 INFO L225 Difference]: With dead ends: 383 [2020-10-23 22:26:31,342 INFO L226 Difference]: Without dead ends: 254 [2020-10-23 22:26:31,344 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 [2020-10-23 22:26:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-23 22:26:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2020-10-23 22:26:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-23 22:26:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 269 transitions. [2020-10-23 22:26:31,389 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 269 transitions. Word has length 135 [2020-10-23 22:26:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:26:31,389 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 269 transitions. [2020-10-23 22:26:31,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:26:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 269 transitions. [2020-10-23 22:26:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-23 22:26:31,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:26:31,392 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] [2020-10-23 22:26:31,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:26:31,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:26:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:26:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1791393763, now seen corresponding path program 1 times [2020-10-23 22:26:31,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:26:31,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415786332] [2020-10-23 22:26:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:26:31,399 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:26:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 22:26:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 22:26:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 22:26:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 22:26:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:26:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:26:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-23 22:26:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:26:31,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415786332] [2020-10-23 22:26:31,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:26:31,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:26:31,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600431289] [2020-10-23 22:26:31,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:26:31,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:26:31,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:26:31,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:26:31,694 INFO L87 Difference]: Start difference. First operand 250 states and 269 transitions. Second operand 7 states. [2020-10-23 22:26:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:26:33,028 INFO L93 Difference]: Finished difference Result 392 states and 423 transitions. [2020-10-23 22:26:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 22:26:33,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-23 22:26:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:26:33,035 INFO L225 Difference]: With dead ends: 392 [2020-10-23 22:26:33,035 INFO L226 Difference]: Without dead ends: 387 [2020-10-23 22:26:33,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:26:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-23 22:26:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2020-10-23 22:26:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-10-23 22:26:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 401 transitions. [2020-10-23 22:26:33,110 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 401 transitions. Word has length 137 [2020-10-23 22:26:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:26:33,112 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 401 transitions. [2020-10-23 22:26:33,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:26:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 401 transitions. [2020-10-23 22:26:33,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 22:26:33,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:26:33,125 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] [2020-10-23 22:26:33,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:26:33,126 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:26:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:26:33,126 INFO L82 PathProgramCache]: Analyzing trace with hash -735301059, now seen corresponding path program 1 times [2020-10-23 22:26:33,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:26:33,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586060652] [2020-10-23 22:26:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:26:33,242 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:26:33,246 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:26:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 22:26:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-23 22:26:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 22:26:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-23 22:26:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 22:26:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:26:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 22:26:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-23 22:26:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-23 22:26:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 22:26:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 22:26:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:34,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:26:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:26:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:26:34,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586060652] [2020-10-23 22:26:34,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:26:34,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-23 22:26:34,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357527742] [2020-10-23 22:26:34,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 22:26:34,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:26:34,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 22:26:34,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-23 22:26:34,190 INFO L87 Difference]: Start difference. First operand 369 states and 401 transitions. Second operand 17 states. [2020-10-23 22:26:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:26:37,911 INFO L93 Difference]: Finished difference Result 576 states and 619 transitions. [2020-10-23 22:26:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 22:26:37,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-23 22:26:37,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:26:37,914 INFO L225 Difference]: With dead ends: 576 [2020-10-23 22:26:37,914 INFO L226 Difference]: Without dead ends: 320 [2020-10-23 22:26:37,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 22:26:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-23 22:26:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 286. [2020-10-23 22:26:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-23 22:26:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 304 transitions. [2020-10-23 22:26:37,973 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 304 transitions. Word has length 160 [2020-10-23 22:26:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:26:37,974 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 304 transitions. [2020-10-23 22:26:37,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 22:26:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 304 transitions. [2020-10-23 22:26:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 22:26:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:26:37,977 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] [2020-10-23 22:26:37,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:26:37,977 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:26:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:26:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1542049195, now seen corresponding path program 1 times [2020-10-23 22:26:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:26:37,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932879595] [2020-10-23 22:26:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:26:39,431 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 251 DAG size of output: 223 [2020-10-23 22:26:39,875 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-23 22:26:40,271 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-23 22:26:41,730 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 248 DAG size of output: 220 [2020-10-23 22:26:42,125 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-23 22:26:42,502 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-23 22:26:43,943 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 247 DAG size of output: 219 [2020-10-23 22:26:44,349 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-23 22:26:44,725 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-23 22:26:46,138 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 248 DAG size of output: 220 [2020-10-23 22:26:46,521 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:26:46,895 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-23 22:26:47,045 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:285) 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:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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) [2020-10-23 22:26:47,051 INFO L168 Benchmark]: Toolchain (without parser) took 24041.17 ms. Allocated memory was 125.8 MB in the beginning and 367.0 MB in the end (delta: 241.2 MB). Free memory was 95.9 MB in the beginning and 283.1 MB in the end (delta: -187.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:26:47,051 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:26:47,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1286.54 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 95.3 MB in the beginning and 134.8 MB in the end (delta: -39.5 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:26:47,054 INFO L168 Benchmark]: Boogie Preprocessor took 120.91 ms. Allocated memory is still 168.8 MB. Free memory was 134.8 MB in the beginning and 131.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:26:47,054 INFO L168 Benchmark]: RCFGBuilder took 1187.77 ms. Allocated memory is still 168.8 MB. Free memory was 131.1 MB in the beginning and 119.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:26:47,055 INFO L168 Benchmark]: TraceAbstraction took 21434.23 ms. Allocated memory was 168.8 MB in the beginning and 367.0 MB in the end (delta: 198.2 MB). Free memory was 118.5 MB in the beginning and 283.1 MB in the end (delta: -164.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:26:47,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 88.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1286.54 ms. Allocated memory was 125.8 MB in the beginning and 168.8 MB in the end (delta: 43.0 MB). Free memory was 95.3 MB in the beginning and 134.8 MB in the end (delta: -39.5 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 120.91 ms. Allocated memory is still 168.8 MB. Free memory was 134.8 MB in the beginning and 131.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1187.77 ms. Allocated memory is still 168.8 MB. Free memory was 131.1 MB in the beginning and 119.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21434.23 ms. Allocated memory was 168.8 MB in the beginning and 367.0 MB in the end (delta: 198.2 MB). Free memory was 118.5 MB in the beginning and 283.1 MB in the end (delta: -164.6 MB). Peak memory consumption was 33.6 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...