/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/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:54:45,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:54:45,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:54:45,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:54:45,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:54:45,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:54:45,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:54:45,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:54:45,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:54:45,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:54:45,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:54:45,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:54:45,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:54:45,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:54:45,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:54:45,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:54:45,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:54:45,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:54:45,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:54:45,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:54:45,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:54:45,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:54:45,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:54:45,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:54:45,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:54:45,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:54:45,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:54:45,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:54:45,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:54:45,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:54:45,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:54:45,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:54:45,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:54:45,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:54:45,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:54:45,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:54:45,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:54:45,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:54:45,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:54:45,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:54:45,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:54:45,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:54:45,883 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:54:45,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:54:45,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:54:45,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:54:45,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:54:45,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:54:45,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:54:45,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:54:45,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:54:45,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:54:45,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:54:45,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:54:45,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:54:45,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:54:45,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:54:45,892 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:54:45,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:54:45,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:54:45,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:54:45,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:54:45,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:54:45,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:54:45,907 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:54:45,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:54:46,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:54:46,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:54:46,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:54:46,336 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:54:46,337 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:54:46,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2021-02-22 01:54:46,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6397b3fa1/d388164409734d128d302e3f1ef1453b/FLAGefc5a182e [2021-02-22 01:54:47,329 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:54:47,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2021-02-22 01:54:47,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6397b3fa1/d388164409734d128d302e3f1ef1453b/FLAGefc5a182e [2021-02-22 01:54:47,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6397b3fa1/d388164409734d128d302e3f1ef1453b [2021-02-22 01:54:47,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:54:47,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:54:47,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:54:47,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:54:47,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:54:47,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:54:47" (1/1) ... [2021-02-22 01:54:47,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dbb368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:47, skipping insertion in model container [2021-02-22 01:54:47,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:54:47" (1/1) ... [2021-02-22 01:54:47,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:54:47,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:54:48,020 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i[23408,23421] [2021-02-22 01:54:48,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:54:48,034 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:54:48,074 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i[23408,23421] [2021-02-22 01:54:48,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:54:48,151 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:54:48,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48 WrapperNode [2021-02-22 01:54:48,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:54:48,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:54:48,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:54:48,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:54:48,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (1/1) ... [2021-02-22 01:54:48,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:54:48,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:54:48,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:54:48,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:54:48,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (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 [2021-02-22 01:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:54:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 01:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 01:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-22 01:54:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-22 01:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-22 01:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-22 01:54:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:54:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:54:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:54:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 01:54:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 01:54:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:54:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:54:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:54:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 01:54:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 01:54:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 01:54:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 01:54:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 01:54:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 01:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 01:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 01:54:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 01:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 01:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 01:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 01:54:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-22 01:54:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-22 01:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-22 01:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 01:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 01:54:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 01:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 01:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 01:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 01:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 01:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 01:54:48,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 01:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 01:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 01:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 01:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 01:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 01:54:48,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 01:54:48,408 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 01:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 01:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 01:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 01:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 01:54:48,409 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 01:54:48,410 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 01:54:48,411 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 01:54:48,412 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 01:54:48,413 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 01:54:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 01:54:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 01:54:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 01:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 01:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 01:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 01:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 01:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 01:54:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 01:54:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 01:54:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 01:54:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:54:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:54:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:54:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:54:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:54:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:54:48,813 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-22 01:54:49,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:54:49,012 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-22 01:54:49,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:54:49 BoogieIcfgContainer [2021-02-22 01:54:49,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:54:49,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:54:49,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:54:49,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:54:49,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:54:47" (1/3) ... [2021-02-22 01:54:49,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecd076c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:54:49, skipping insertion in model container [2021-02-22 01:54:49,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:54:48" (2/3) ... [2021-02-22 01:54:49,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecd076c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:54:49, skipping insertion in model container [2021-02-22 01:54:49,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:54:49" (3/3) ... [2021-02-22 01:54:49,041 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2021-02-22 01:54:49,049 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:54:49,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:54:49,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:54:49,144 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:54:49,144 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:54:49,145 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:54:49,145 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:54:49,145 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:54:49,145 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:54:49,145 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:54:49,146 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:54:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-22 01:54:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 01:54:49,195 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:49,197 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] [2021-02-22 01:54:49,197 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:49,207 INFO L82 PathProgramCache]: Analyzing trace with hash -461049234, now seen corresponding path program 1 times [2021-02-22 01:54:49,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:49,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702660721] [2021-02-22 01:54:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:49,324 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:49,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:49,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:49,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:54:49,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702660721] [2021-02-22 01:54:49,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:49,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:54:49,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690449705] [2021-02-22 01:54:49,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:54:49,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:49,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:54:49,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:54:49,600 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2021-02-22 01:54:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:49,776 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2021-02-22 01:54:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:54:49,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-22 01:54:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:49,787 INFO L225 Difference]: With dead ends: 115 [2021-02-22 01:54:49,787 INFO L226 Difference]: Without dead ends: 61 [2021-02-22 01:54:49,791 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 [2021-02-22 01:54:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-22 01:54:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-22 01:54:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-22 01:54:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-22 01:54:49,840 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 26 [2021-02-22 01:54:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:49,841 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-22 01:54:49,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:54:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-22 01:54:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-22 01:54:49,843 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:49,843 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] [2021-02-22 01:54:49,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:54:49,843 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:49,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:49,844 INFO L82 PathProgramCache]: Analyzing trace with hash 39557614, now seen corresponding path program 1 times [2021-02-22 01:54:49,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:49,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539227678] [2021-02-22 01:54:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:49,850 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:54:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:49,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:49,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:49,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:49,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:54:49,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:54:49,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:49,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:50,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:54:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:54:50,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:50,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:54:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:54:50,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539227678] [2021-02-22 01:54:50,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:54:50,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:54:50,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345814466] [2021-02-22 01:54:50,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:54:50,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:54:50,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:54:50,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:54:50,033 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 7 states. [2021-02-22 01:54:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:54:50,344 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2021-02-22 01:54:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:54:50,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2021-02-22 01:54:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:54:50,350 INFO L225 Difference]: With dead ends: 138 [2021-02-22 01:54:50,350 INFO L226 Difference]: Without dead ends: 132 [2021-02-22 01:54:50,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:54:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-02-22 01:54:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 74. [2021-02-22 01:54:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-22 01:54:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-02-22 01:54:50,385 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 34 [2021-02-22 01:54:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:54:50,385 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-02-22 01:54:50,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:54:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-02-22 01:54:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-22 01:54:50,388 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:54:50,389 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-22 01:54:50,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:54:50,389 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:54:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:54:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1904476042, now seen corresponding path program 1 times [2021-02-22 01:54:50,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:54:50,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124548896] [2021-02-22 01:54:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:54:50,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:50,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:54:50,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:50,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:54:50,462 WARN L141 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size [2021-02-22 01:54:50,480 WARN L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-02-22 01:54:50,506 WARN L141 QuantifierPusher]: treesize reduction 18, result has 71.0 percent of original size [2021-02-22 01:54:50,512 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 01:54:50,518 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:50,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:54:50,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:54:50,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-22 01:54:50,532 WARN L147 QuantifierPusher]: treesize reduction 18, result has 71.0 percent of original size 44 [2021-02-22 01:54:50,533 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 01:54:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:54:50,601 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:54:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:54:50,623 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:54:50,656 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:54:50,656 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:54:50,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:54:50,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:54:50 BoogieIcfgContainer [2021-02-22 01:54:50,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:54:50,677 INFO L168 Benchmark]: Toolchain (without parser) took 3088.97 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 111.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:50,678 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:54:50,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.83 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 103.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:50,679 INFO L168 Benchmark]: Boogie Preprocessor took 115.18 ms. Allocated memory is still 152.0 MB. Free memory was 103.5 MB in the beginning and 100.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:50,680 INFO L168 Benchmark]: RCFGBuilder took 745.78 ms. Allocated memory is still 152.0 MB. Free memory was 100.9 MB in the beginning and 54.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:54:50,681 INFO L168 Benchmark]: TraceAbstraction took 1656.20 ms. Allocated memory is still 152.0 MB. Free memory was 53.9 MB in the beginning and 111.6 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:54:50,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 548.83 ms. Allocated memory is still 152.0 MB. Free memory was 125.5 MB in the beginning and 103.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.18 ms. Allocated memory is still 152.0 MB. Free memory was 103.5 MB in the beginning and 100.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 745.78 ms. Allocated memory is still 152.0 MB. Free memory was 100.9 MB in the beginning and 54.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1656.20 ms. Allocated memory is still 152.0 MB. Free memory was 53.9 MB in the beginning and 111.6 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] EXPR p->h [L552] COND TRUE p->h == 2 [L553] EXPR p->n [L553] p = p->n [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 101 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 90 SDslu, 199 SDs, 0 SdLazy, 225 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, 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, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 1 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...