/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_32.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:39:25,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:39:25,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:39:25,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:39:25,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:39:25,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:39:25,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:39:25,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:39:25,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:39:25,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:39:25,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:39:25,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:39:25,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:39:25,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:39:25,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:39:25,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:39:25,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:39:25,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:39:25,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:39:25,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:39:25,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:39:25,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:39:25,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:39:25,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:39:25,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:39:25,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:39:25,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:39:25,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:39:25,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:39:25,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:39:25,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:39:25,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:39:25,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:39:25,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:39:25,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:39:25,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:39:25,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:39:25,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:39:25,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:39:25,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:39:25,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:39:25,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:39:25,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:39:25,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:39:25,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:39:25,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:39:25,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:39:25,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:39:25,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:39:25,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:39:25,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:39:25,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:39:25,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:39:25,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:39:25,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:39:25,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:39:25,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:39:25,432 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:39:25,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:39:25,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:39:25,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:39:25,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:39:25,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:39:25,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:39:25,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:39:25,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:39:25,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:39:25,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:39:25,837 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:39:25,839 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:39:25,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-10-23 20:39:25,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c816a81eb/8f20464f08db454e8bc4cb00ff99812f/FLAGf2f966a3a [2020-10-23 20:39:26,614 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:39:26,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-10-23 20:39:26,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c816a81eb/8f20464f08db454e8bc4cb00ff99812f/FLAGf2f966a3a [2020-10-23 20:39:26,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c816a81eb/8f20464f08db454e8bc4cb00ff99812f [2020-10-23 20:39:26,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:39:26,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:39:26,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:39:26,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:39:26,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:39:26,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:26" (1/1) ... [2020-10-23 20:39:26,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adb393c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:26, skipping insertion in model container [2020-10-23 20:39:26,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:39:26" (1/1) ... [2020-10-23 20:39:26,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:39:27,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:39:27,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:39:27,406 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:39:27,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:39:27,569 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:39:27,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27 WrapperNode [2020-10-23 20:39:27,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:39:27,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:39:27,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:39:27,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:39:27,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (1/1) ... [2020-10-23 20:39:27,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:39:27,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:39:27,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:39:27,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:39:27,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (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 20:39:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:39:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:39:27,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:39:27,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 20:39:27,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 20:39:27,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-23 20:39:27,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-23 20:39:27,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-23 20:39:27,791 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-23 20:39:27,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:39:27,791 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:39:27,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:39:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:39:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:39:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:39:27,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:39:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:39:27,793 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:39:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:39:27,794 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:39:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:39:27,795 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:39:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:39:27,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:39:27,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:39:27,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:39:27,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:39:27,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:39:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:39:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:39:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:39:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:39:27,800 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:39:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 20:39:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 20:39:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-23 20:39:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-23 20:39:27,801 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:39:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:39:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:39:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:39:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:39:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:39:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:39:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:39:27,804 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:39:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:39:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:39:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:39:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:39:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:39:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:39:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:39:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:39:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:39:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:39:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:39:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:39:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:39:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:39:27,809 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:39:27,809 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:39:27,809 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:39:27,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:39:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:39:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:39:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:39:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:39:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:39:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:39:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:39:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:39:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:39:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:39:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:39:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:39:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:39:27,813 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:39:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:39:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:39:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:39:27,814 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:39:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:39:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:39:27,815 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:39:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:39:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:39:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:39:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:39:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:39:27,816 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:39:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:39:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:39:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:39:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:39:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:39:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:39:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:39:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-23 20:39:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:39:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:39:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:39:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:39:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:39:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:39:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:39:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:39:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:39:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:39:28,399 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-23 20:39:28,723 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:39:28,723 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:39:28,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:28 BoogieIcfgContainer [2020-10-23 20:39:28,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:39:28,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:39:28,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:39:28,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:39:28,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:39:26" (1/3) ... [2020-10-23 20:39:28,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e758fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:28, skipping insertion in model container [2020-10-23 20:39:28,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:39:27" (2/3) ... [2020-10-23 20:39:28,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e758fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:39:28, skipping insertion in model container [2020-10-23 20:39:28,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:39:28" (3/3) ... [2020-10-23 20:39:28,736 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-23 20:39:28,749 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:39:28,756 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:39:28,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:39:28,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:39:28,798 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:39:28,798 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:39:28,798 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:39:28,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:39:28,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:39:28,799 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:39:28,799 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:39:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-10-23 20:39:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 20:39:28,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:28,831 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] [2020-10-23 20:39:28,831 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash -656857694, now seen corresponding path program 1 times [2020-10-23 20:39:28,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:28,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947667231] [2020-10-23 20:39:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:28,950 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:29,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:29,171 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 20:39:29,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947667231] [2020-10-23 20:39:29,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:29,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:39:29,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098155478] [2020-10-23 20:39:29,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:39:29,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:29,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:39:29,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:39:29,198 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-10-23 20:39:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:29,676 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2020-10-23 20:39:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:39:29,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-23 20:39:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:29,689 INFO L225 Difference]: With dead ends: 188 [2020-10-23 20:39:29,689 INFO L226 Difference]: Without dead ends: 90 [2020-10-23 20:39:29,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:39:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-23 20:39:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-23 20:39:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-23 20:39:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2020-10-23 20:39:29,752 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 33 [2020-10-23 20:39:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:29,752 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2020-10-23 20:39:29,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:39:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2020-10-23 20:39:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 20:39:29,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:29,755 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] [2020-10-23 20:39:29,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:39:29,756 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:29,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:29,757 INFO L82 PathProgramCache]: Analyzing trace with hash -892671550, now seen corresponding path program 1 times [2020-10-23 20:39:29,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:29,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113435588] [2020-10-23 20:39:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:29,765 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:29,930 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 20:39:29,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113435588] [2020-10-23 20:39:29,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:29,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:39:29,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932207652] [2020-10-23 20:39:29,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:39:29,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:29,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:39:29,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:39:29,935 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 5 states. [2020-10-23 20:39:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:30,429 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2020-10-23 20:39:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:39:30,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-23 20:39:30,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:30,434 INFO L225 Difference]: With dead ends: 216 [2020-10-23 20:39:30,434 INFO L226 Difference]: Without dead ends: 144 [2020-10-23 20:39:30,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:39:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-23 20:39:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2020-10-23 20:39:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-23 20:39:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-10-23 20:39:30,455 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 45 [2020-10-23 20:39:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:30,455 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-10-23 20:39:30,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:39:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-10-23 20:39:30,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-23 20:39:30,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:30,457 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] [2020-10-23 20:39:30,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:39:30,458 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:30,459 INFO L82 PathProgramCache]: Analyzing trace with hash 653950565, now seen corresponding path program 1 times [2020-10-23 20:39:30,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:30,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249994314] [2020-10-23 20:39:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:30,465 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:39:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:39:30,601 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 20:39:30,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249994314] [2020-10-23 20:39:30,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:39:30,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:39:30,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352507692] [2020-10-23 20:39:30,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:39:30,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:39:30,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:39:30,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:39:30,605 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 5 states. [2020-10-23 20:39:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:39:30,993 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2020-10-23 20:39:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:39:30,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-23 20:39:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:39:30,996 INFO L225 Difference]: With dead ends: 169 [2020-10-23 20:39:30,996 INFO L226 Difference]: Without dead ends: 117 [2020-10-23 20:39:30,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:39:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-23 20:39:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 94. [2020-10-23 20:39:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-23 20:39:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2020-10-23 20:39:31,014 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 47 [2020-10-23 20:39:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:39:31,015 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2020-10-23 20:39:31,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:39:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2020-10-23 20:39:31,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 20:39:31,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:39:31,017 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] [2020-10-23 20:39:31,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:39:31,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:39:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:39:31,018 INFO L82 PathProgramCache]: Analyzing trace with hash 678995586, now seen corresponding path program 1 times [2020-10-23 20:39:31,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:39:31,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113525415] [2020-10-23 20:39:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:39:31,025 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:39:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:39:31,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:39:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:39:31,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:39:31,185 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:39:31,185 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:39:31,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:39:31,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:39:31 BoogieIcfgContainer [2020-10-23 20:39:31,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:39:31,216 INFO L168 Benchmark]: Toolchain (without parser) took 4292.88 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 135.1 MB in the beginning and 158.9 MB in the end (delta: -23.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:31,217 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:31,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.58 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 112.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:31,219 INFO L168 Benchmark]: Boogie Preprocessor took 97.65 ms. Allocated memory is still 160.4 MB. Free memory was 112.2 MB in the beginning and 109.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:31,220 INFO L168 Benchmark]: RCFGBuilder took 1056.29 ms. Allocated memory is still 160.4 MB. Free memory was 109.4 MB in the beginning and 91.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:39:31,221 INFO L168 Benchmark]: TraceAbstraction took 2486.03 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 91.7 MB in the beginning and 158.9 MB in the end (delta: -67.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:39:31,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 160.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 635.58 ms. Allocated memory is still 160.4 MB. Free memory was 134.5 MB in the beginning and 112.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.65 ms. Allocated memory is still 160.4 MB. Free memory was 112.2 MB in the beginning and 109.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1056.29 ms. Allocated memory is still 160.4 MB. Free memory was 109.4 MB in the beginning and 91.7 MB in the end (delta: 17.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2486.03 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 91.7 MB in the beginning and 158.9 MB in the end (delta: -67.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 139 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 298 SDtfs, 131 SDslu, 287 SDs, 0 SdLazy, 332 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 75 StatesRemovedByMinimization, 2 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...