/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:19:15,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:19:15,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:19:15,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:19:15,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:19:15,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:19:15,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:19:15,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:19:15,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:19:15,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:19:15,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:19:15,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:19:15,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:19:15,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:19:15,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:19:15,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:19:15,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:19:15,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:19:15,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:19:15,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:19:15,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:19:15,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:19:15,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:19:15,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:19:15,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:19:15,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:19:15,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:19:15,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:19:15,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:19:15,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:19:15,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:19:15,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:19:15,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:19:15,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:19:15,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:19:15,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:19:15,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:19:15,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:19:15,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:19:15,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:19:15,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:19:15,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:19:15,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:19:15,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:19:15,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:19:15,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:19:15,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:19:15,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:19:15,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:19:15,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:19:15,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:19:15,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:19:15,398 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:19:15,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:19:15,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:19:15,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:19:15,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:19:15,400 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:19:15,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:19:15,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:19:15,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:19:15,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:19:15,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:19:15,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:19:15,401 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:19:15,401 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:19:15,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:19:15,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:19:15,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:19:15,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:19:15,795 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:19:15,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2021-02-24 04:19:15,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab575f2d/9fa1103231064523ad6e9ea08e15d549/FLAG856059afe [2021-02-24 04:19:16,596 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:19:16,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2021-02-24 04:19:16,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab575f2d/9fa1103231064523ad6e9ea08e15d549/FLAG856059afe [2021-02-24 04:19:16,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ab575f2d/9fa1103231064523ad6e9ea08e15d549 [2021-02-24 04:19:16,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:19:16,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:19:16,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:19:16,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:19:16,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:19:16,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:19:16" (1/1) ... [2021-02-24 04:19:16,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509e774a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:16, skipping insertion in model container [2021-02-24 04:19:16,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:19:16" (1/1) ... [2021-02-24 04:19:16,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:19:16,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:19:17,221 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-02-24 04:19:17,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:19:17,260 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:19:17,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2021-02-24 04:19:17,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:19:17,387 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:19:17,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17 WrapperNode [2021-02-24 04:19:17,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:19:17,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:19:17,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:19:17,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:19:17,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... [2021-02-24 04:19:17,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:19:17,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:19:17,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:19:17,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:19:17,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:19:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:19:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:19:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:19:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-24 04:19:17,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-24 04:19:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-02-24 04:19:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-02-24 04:19:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2021-02-24 04:19:17,674 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2021-02-24 04:19:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2021-02-24 04:19:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2021-02-24 04:19:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2021-02-24 04:19:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2021-02-24 04:19:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2021-02-24 04:19:17,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:19:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:19:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:19:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:19:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:19:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-24 04:19:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-24 04:19:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-24 04:19:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-24 04:19:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-24 04:19:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-24 04:19:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-24 04:19:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-24 04:19:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-24 04:19:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-24 04:19:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-24 04:19:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-24 04:19:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-24 04:19:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-24 04:19:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-24 04:19:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-24 04:19:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-24 04:19:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-24 04:19:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-24 04:19:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-24 04:19:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-24 04:19:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-24 04:19:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-24 04:19:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-24 04:19:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:19:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-24 04:19:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-24 04:19:17,690 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 04:19:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-24 04:19:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-24 04:19:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-24 04:19:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-24 04:19:17,691 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-24 04:19:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-24 04:19:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:19:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-24 04:19:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-24 04:19:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-24 04:19:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-24 04:19:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-24 04:19:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-24 04:19:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-24 04:19:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-24 04:19:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-24 04:19:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-24 04:19:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-24 04:19:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-24 04:19:17,695 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-24 04:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-24 04:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-24 04:19:17,698 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-24 04:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-24 04:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-24 04:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-02-24 04:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-24 04:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2021-02-24 04:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2021-02-24 04:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2021-02-24 04:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2021-02-24 04:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2021-02-24 04:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:19:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:19:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:19:18,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:19:18,668 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-02-24 04:19:18,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:19:18 BoogieIcfgContainer [2021-02-24 04:19:18,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:19:18,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:19:18,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:19:18,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:19:18,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:19:16" (1/3) ... [2021-02-24 04:19:18,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b9847c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:19:18, skipping insertion in model container [2021-02-24 04:19:18,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:19:17" (2/3) ... [2021-02-24 04:19:18,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b9847c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:19:18, skipping insertion in model container [2021-02-24 04:19:18,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:19:18" (3/3) ... [2021-02-24 04:19:18,681 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2021-02-24 04:19:18,689 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:19:18,695 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:19:18,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:19:18,742 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:19:18,742 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:19:18,742 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:19:18,742 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:19:18,742 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:19:18,743 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:19:18,743 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:19:18,743 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:19:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states. [2021-02-24 04:19:18,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 04:19:18,778 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:19:18,779 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] [2021-02-24 04:19:18,780 INFO L428 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:19:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:19:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1428598154, now seen corresponding path program 1 times [2021-02-24 04:19:18,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:19:18,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962521408] [2021-02-24 04:19:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:19:18,894 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:19:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:19,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:19,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:19,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:19,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:19:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:19,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:19,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:19:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:19,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:19,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:19,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:19,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:19:19,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962521408] [2021-02-24 04:19:19,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:19:19,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:19:19,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449492007] [2021-02-24 04:19:19,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:19:19,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:19:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:19:19,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:19:19,231 INFO L87 Difference]: Start difference. First operand 213 states. Second operand 4 states. [2021-02-24 04:19:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:19:20,002 INFO L93 Difference]: Finished difference Result 428 states and 577 transitions. [2021-02-24 04:19:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:19:20,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2021-02-24 04:19:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:19:20,021 INFO L225 Difference]: With dead ends: 428 [2021-02-24 04:19:20,021 INFO L226 Difference]: Without dead ends: 215 [2021-02-24 04:19:20,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:19:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-24 04:19:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 192. [2021-02-24 04:19:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-24 04:19:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2021-02-24 04:19:20,111 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 45 [2021-02-24 04:19:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:19:20,112 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2021-02-24 04:19:20,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:19:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2021-02-24 04:19:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-24 04:19:20,116 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:19:20,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:19:20,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:19:20,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:19:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:19:20,118 INFO L82 PathProgramCache]: Analyzing trace with hash -505106365, now seen corresponding path program 1 times [2021-02-24 04:19:20,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:19:20,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285828735] [2021-02-24 04:19:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:19:20,125 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:19:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:20,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:20,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:19:20,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:19:20,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:19:20,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:20,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:20,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:20,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:19:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:20,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:20,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:19:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:20,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:19:20,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:19:20,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:19:20,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:19:20,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-24 04:19:20,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:20,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:19:21,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:19:21,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:19:21,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 04:19:21,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:19:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-24 04:19:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:21,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:19:21,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:19:21,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:19:21,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:19:21,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:19:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:21,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:21,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:21,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:21,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-24 04:19:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:21,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:19:21,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-02-24 04:19:21,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-02-24 04:19:21,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:21,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-02-24 04:19:22,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 950 [2021-02-24 04:19:22,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 950 [2021-02-24 04:19:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:19:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:22,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:19:22,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:19:22,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:19:22,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:19:22,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:22,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-02-24 04:19:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 04:19:22,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285828735] [2021-02-24 04:19:22,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:19:22,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-02-24 04:19:22,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62754438] [2021-02-24 04:19:22,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-02-24 04:19:22,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:19:22,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-02-24 04:19:22,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1101, Unknown=0, NotChecked=0, Total=1190 [2021-02-24 04:19:22,808 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 35 states. [2021-02-24 04:19:23,948 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-02-24 04:19:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:19:29,253 INFO L93 Difference]: Finished difference Result 267 states and 302 transitions. [2021-02-24 04:19:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-24 04:19:29,254 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 89 [2021-02-24 04:19:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:19:29,270 INFO L225 Difference]: With dead ends: 267 [2021-02-24 04:19:29,270 INFO L226 Difference]: Without dead ends: 264 [2021-02-24 04:19:29,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=258, Invalid=3048, Unknown=0, NotChecked=0, Total=3306 [2021-02-24 04:19:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-24 04:19:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 209. [2021-02-24 04:19:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-24 04:19:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2021-02-24 04:19:29,361 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 89 [2021-02-24 04:19:29,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:19:29,362 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2021-02-24 04:19:29,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2021-02-24 04:19:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2021-02-24 04:19:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-02-24 04:19:29,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:19:29,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:19:29,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:19:29,374 INFO L428 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:19:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:19:29,375 INFO L82 PathProgramCache]: Analyzing trace with hash -75653267, now seen corresponding path program 1 times [2021-02-24 04:19:29,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:19:29,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147079053] [2021-02-24 04:19:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:19:29,381 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:19:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:29,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:29,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:19:29,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:19:29,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:19:29,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:29,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:29,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:29,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:29,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:19:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:29,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:19:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:19:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:29,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:19:29,682 WARN L141 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-02-24 04:19:29,683 WARN L147 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size 18 [2021-02-24 04:19:29,706 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:19:29,707 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:19:29,732 WARN L141 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size [2021-02-24 04:19:29,733 WARN L147 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size 37 [2021-02-24 04:19:29,788 WARN L141 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size [2021-02-24 04:19:29,792 WARN L147 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size 33 [2021-02-24 04:19:29,851 WARN L141 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-02-24 04:19:29,852 WARN L147 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size 27 [2021-02-24 04:19:29,887 WARN L141 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size [2021-02-24 04:19:29,889 WARN L147 QuantifierPusher]: treesize reduction 4, result has 88.6 percent of original size 31 [2021-02-24 04:19:29,933 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-02-24 04:19:29,934 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-02-24 04:19:29,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:29,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:19:30,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:19:30,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-24 04:19:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:30,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:19:30,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:19:30,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:19:30,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 04:19:30,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:19:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:30,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:30,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:30,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:19:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-24 04:19:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:30,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:19:30,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-24 04:19:30,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-24 04:19:30,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:30,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-02-24 04:19:31,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:31,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 914 [2021-02-24 04:19:31,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:31,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 914 [2021-02-24 04:19:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-24 04:19:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:19:31,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:31,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:19:31,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:31,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:19:31,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:31,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:19:31,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:19:31,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 04:19:31,531 WARN L141 QuantifierPusher]: treesize reduction 96, result has 65.8 percent of original size [2021-02-24 04:19:31,534 WARN L147 QuantifierPusher]: treesize reduction 96, result has 65.8 percent of original size 185 [2021-02-24 04:19:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 04:19:31,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147079053] [2021-02-24 04:19:31,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:19:31,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-02-24 04:19:31,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17268687] [2021-02-24 04:19:31,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-24 04:19:31,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:19:31,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-24 04:19:31,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 04:19:31,813 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand 36 states. [2021-02-24 04:19:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:19:39,819 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2021-02-24 04:19:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-02-24 04:19:39,820 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 91 [2021-02-24 04:19:39,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:19:39,823 INFO L225 Difference]: With dead ends: 277 [2021-02-24 04:19:39,824 INFO L226 Difference]: Without dead ends: 274 [2021-02-24 04:19:39,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=299, Invalid=3733, Unknown=0, NotChecked=0, Total=4032 [2021-02-24 04:19:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-02-24 04:19:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 209. [2021-02-24 04:19:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-24 04:19:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 230 transitions. [2021-02-24 04:19:39,862 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 230 transitions. Word has length 91 [2021-02-24 04:19:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:19:39,862 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 230 transitions. [2021-02-24 04:19:39,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2021-02-24 04:19:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 230 transitions. [2021-02-24 04:19:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-02-24 04:19:39,864 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:19:39,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:19:39,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:19:39,865 INFO L428 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:19:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:19:39,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1638781318, now seen corresponding path program 1 times [2021-02-24 04:19:39,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:19:39,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3320419] [2021-02-24 04:19:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:19:39,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:19:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:19:39,910 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:19:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:19:39,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:19:39,997 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:19:39,997 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:19:39,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:19:40,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:19:40 BoogieIcfgContainer [2021-02-24 04:19:40,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:19:40,022 INFO L168 Benchmark]: Toolchain (without parser) took 23154.03 ms. Allocated memory was 156.2 MB in the beginning and 377.5 MB in the end (delta: 221.2 MB). Free memory was 130.8 MB in the beginning and 294.7 MB in the end (delta: -163.9 MB). Peak memory consumption was 58.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:19:40,023 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:19:40,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.18 ms. Allocated memory is still 156.2 MB. Free memory was 129.7 MB in the beginning and 137.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:19:40,024 INFO L168 Benchmark]: Boogie Preprocessor took 155.73 ms. Allocated memory is still 156.2 MB. Free memory was 137.1 MB in the beginning and 133.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:19:40,025 INFO L168 Benchmark]: RCFGBuilder took 1125.29 ms. Allocated memory was 156.2 MB in the beginning and 204.5 MB in the end (delta: 48.2 MB). Free memory was 133.5 MB in the beginning and 164.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:19:40,025 INFO L168 Benchmark]: TraceAbstraction took 21348.07 ms. Allocated memory was 204.5 MB in the beginning and 377.5 MB in the end (delta: 173.0 MB). Free memory was 164.0 MB in the beginning and 294.7 MB in the end (delta: -130.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:19:40,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 507.18 ms. Allocated memory is still 156.2 MB. Free memory was 129.7 MB in the beginning and 137.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 155.73 ms. Allocated memory is still 156.2 MB. Free memory was 137.1 MB in the beginning and 133.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1125.29 ms. Allocated memory was 156.2 MB in the beginning and 204.5 MB in the end (delta: 48.2 MB). Free memory was 133.5 MB in the beginning and 164.6 MB in the end (delta: -31.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21348.07 ms. Allocated memory was 204.5 MB in the beginning and 377.5 MB in the end (delta: 173.0 MB). Free memory was 164.0 MB in the beginning and 294.7 MB in the end (delta: -130.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L590] RET chain_node(&list) [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L597] RET chain_node(&list) [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) [L626] COND FALSE !(!(beg)) [L627] COND FALSE !(!(end)) [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg [L629] COND TRUE !(beg) [L629] CALL fail() [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 541 SDtfs, 979 SDslu, 3509 SDs, 0 SdLazy, 8860 SolverSat, 296 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 143 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...