/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/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:55:00,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:55:00,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:55:00,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:55:00,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:55:00,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:55:00,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:55:00,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:55:00,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:55:00,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:55:00,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:55:00,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:55:00,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:55:00,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:55:00,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:55:00,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:55:00,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:55:00,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:55:00,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:55:00,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:55:00,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:55:00,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:55:00,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:55:00,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:55:00,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:55:00,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:55:00,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:55:01,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:55:01,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:55:01,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:55:01,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:55:01,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:55:01,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:55:01,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:55:01,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:55:01,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:55:01,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:55:01,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:55:01,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:55:01,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:55:01,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:55:01,012 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 01:55:01,039 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:55:01,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:55:01,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:55:01,043 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:55:01,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:55:01,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:55:01,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:55:01,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:55:01,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:55:01,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:55:01,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:55:01,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:55:01,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:55:01,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:55:01,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:55:01,047 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:55:01,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:55:01,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:55:01,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:55:01,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:55:01,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:55:01,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:55:01,049 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:55:01,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:55:01,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:55:01,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:55:01,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:55:01,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:55:01,532 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:55:01,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2021-02-22 01:55:01,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8554f1953/9991148b3db64a3aaa3c525127934542/FLAGb7493ddf8 [2021-02-22 01:55:02,281 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:55:02,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2021-02-22 01:55:02,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8554f1953/9991148b3db64a3aaa3c525127934542/FLAGb7493ddf8 [2021-02-22 01:55:02,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8554f1953/9991148b3db64a3aaa3c525127934542 [2021-02-22 01:55:02,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:55:02,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:55:02,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:55:02,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:55:02,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:55:02,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:55:02" (1/1) ... [2021-02-22 01:55:02,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5626133c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:02, skipping insertion in model container [2021-02-22 01:55:02,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:55:02" (1/1) ... [2021-02-22 01:55:02,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:55:02,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:55:03,017 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/simple-1.i[23237,23250] [2021-02-22 01:55:03,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:55:03,039 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:55:03,120 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/simple-1.i[23237,23250] [2021-02-22 01:55:03,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:55:03,199 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:55:03,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03 WrapperNode [2021-02-22 01:55:03,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:55:03,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:55:03,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:55:03,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:55:03,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (1/1) ... [2021-02-22 01:55:03,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:55:03,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:55:03,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:55:03,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:55:03,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (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 01:55:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:55:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 01:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 01:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-22 01:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-22 01:55:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-22 01:55:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-22 01:55:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:55:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:55:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:55:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 01:55:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 01:55:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:55:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:55:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:55:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 01:55:03,416 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 01:55:03,418 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 01:55:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 01:55:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 01:55:03,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 01:55:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 01:55:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 01:55:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 01:55:03,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 01:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 01:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 01:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 01:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 01:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 01:55:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 01:55:03,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 01:55:03,428 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 01:55:03,429 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 01:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 01:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 01:55:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 01:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 01:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 01:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 01:55:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 01:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 01:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 01:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 01:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 01:55:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 01:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 01:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 01:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 01:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 01:55:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:55:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 01:55:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 01:55:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:55:03,434 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 01:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 01:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 01:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 01:55:03,435 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 01:55:03,436 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 01:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 01:55:03,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 01:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 01:55:03,438 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 01:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 01:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 01:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 01:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 01:55:03,439 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 01:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 01:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 01:55:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 01:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 01:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 01:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 01:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 01:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 01:55:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 01:55:03,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 01:55:03,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 01:55:03,444 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 01:55:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 01:55:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-22 01:55:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:55:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:55:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:55:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:55:03,858 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-22 01:55:04,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:55:04,034 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 01:55:04,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:55:04 BoogieIcfgContainer [2021-02-22 01:55:04,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:55:04,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:55:04,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:55:04,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:55:04,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:55:02" (1/3) ... [2021-02-22 01:55:04,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3cb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:55:04, skipping insertion in model container [2021-02-22 01:55:04,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:55:03" (2/3) ... [2021-02-22 01:55:04,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3cb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:55:04, skipping insertion in model container [2021-02-22 01:55:04,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:55:04" (3/3) ... [2021-02-22 01:55:04,045 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-02-22 01:55:04,052 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:55:04,057 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:55:04,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:55:04,100 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:55:04,100 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:55:04,100 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:55:04,101 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:55:04,101 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:55:04,101 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:55:04,101 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:55:04,101 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:55:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-02-22 01:55:04,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 01:55:04,127 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:04,128 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 01:55:04,128 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:04,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash -464779914, now seen corresponding path program 1 times [2021-02-22 01:55:04,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:04,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643775349] [2021-02-22 01:55:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:04,225 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:55:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:04,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:04,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:55:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:04,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:04,486 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 01:55:04,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643775349] [2021-02-22 01:55:04,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:55:04,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:55:04,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470890321] [2021-02-22 01:55:04,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:55:04,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:55:04,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:55:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:55:04,523 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2021-02-22 01:55:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:55:04,687 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2021-02-22 01:55:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:55:04,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-22 01:55:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:55:04,697 INFO L225 Difference]: With dead ends: 70 [2021-02-22 01:55:04,697 INFO L226 Difference]: Without dead ends: 42 [2021-02-22 01:55:04,701 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 01:55:04,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-22 01:55:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-02-22 01:55:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-22 01:55:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-22 01:55:04,743 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 26 [2021-02-22 01:55:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:55:04,744 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-22 01:55:04,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:55:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-22 01:55:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-22 01:55:04,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:04,746 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] [2021-02-22 01:55:04,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:55:04,746 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash -224928320, now seen corresponding path program 1 times [2021-02-22 01:55:04,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:04,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35879639] [2021-02-22 01:55:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:04,754 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:55:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:04,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:04,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:55:04,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 01:55:04,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:55:04,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:55:04,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:55:04,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:04,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:55:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:55:04,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:04,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:55:04,931 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 01:55:04,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35879639] [2021-02-22 01:55:04,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:55:04,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:55:04,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608724507] [2021-02-22 01:55:04,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:55:04,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:55:04,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:55:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:55:04,936 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 8 states. [2021-02-22 01:55:05,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:55:05,189 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2021-02-22 01:55:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:55:05,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-22 01:55:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:55:05,192 INFO L225 Difference]: With dead ends: 84 [2021-02-22 01:55:05,192 INFO L226 Difference]: Without dead ends: 81 [2021-02-22 01:55:05,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:55:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-22 01:55:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 51. [2021-02-22 01:55:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-22 01:55:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-02-22 01:55:05,208 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 28 [2021-02-22 01:55:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:55:05,208 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-02-22 01:55:05,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:55:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-02-22 01:55:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 01:55:05,210 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:55:05,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:55:05,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:55:05,211 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:55:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:55:05,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1235598545, now seen corresponding path program 1 times [2021-02-22 01:55:05,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:55:05,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318460199] [2021-02-22 01:55:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:55:05,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,280 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size [2021-02-22 01:55:05,296 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size 37 [2021-02-22 01:55:05,304 WARN L141 QuantifierPusher]: treesize reduction 18, result has 74.3 percent of original size [2021-02-22 01:55:05,309 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 01:55:05,314 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:55:05,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 01:55:05,323 WARN L147 QuantifierPusher]: treesize reduction 18, result has 74.3 percent of original size 52 [2021-02-22 01:55:05,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,343 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.6 percent of original size [2021-02-22 01:55:05,345 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.6 percent of original size 43 [2021-02-22 01:55:05,349 WARN L141 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size [2021-02-22 01:55:05,351 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 01:55:05,354 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:55:05,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-22 01:55:05,360 WARN L147 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size 58 [2021-02-22 01:55:05,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,375 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.6 percent of original size [2021-02-22 01:55:05,377 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.6 percent of original size 43 [2021-02-22 01:55:05,381 WARN L141 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size [2021-02-22 01:55:05,383 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 01:55:05,385 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:55:05,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-22 01:55:05,390 WARN L147 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size 58 [2021-02-22 01:55:05,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 01:55:05,404 WARN L141 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size [2021-02-22 01:55:05,406 WARN L147 QuantifierPusher]: treesize reduction 2, result has 94.9 percent of original size 37 [2021-02-22 01:55:05,410 WARN L141 QuantifierPusher]: treesize reduction 18, result has 74.3 percent of original size [2021-02-22 01:55:05,412 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 01:55:05,414 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:55:05,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:55:05,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 01:55:05,419 WARN L147 QuantifierPusher]: treesize reduction 18, result has 74.3 percent of original size 52 [2021-02-22 01:55:05,419 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 01:55:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:55:05,456 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:55:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:55:05,483 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:55:05,541 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:55:05,541 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:55:05,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:55:05,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:55:05 BoogieIcfgContainer [2021-02-22 01:55:05,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:55:05,562 INFO L168 Benchmark]: Toolchain (without parser) took 2944.03 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 57.3 MB in the end (delta: 69.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:05,563 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:55:05,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.99 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 104.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:05,564 INFO L168 Benchmark]: Boogie Preprocessor took 107.85 ms. Allocated memory is still 152.0 MB. Free memory was 104.3 MB in the beginning and 101.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:05,565 INFO L168 Benchmark]: RCFGBuilder took 723.48 ms. Allocated memory is still 152.0 MB. Free memory was 101.8 MB in the beginning and 103.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:05,566 INFO L168 Benchmark]: TraceAbstraction took 1523.35 ms. Allocated memory is still 152.0 MB. Free memory was 102.9 MB in the beginning and 57.3 MB in the end (delta: 45.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:55:05,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 564.99 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 104.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 107.85 ms. Allocated memory is still 152.0 MB. Free memory was 104.3 MB in the beginning and 101.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 723.48 ms. Allocated memory is still 152.0 MB. Free memory was 101.8 MB in the beginning and 103.4 MB in the end (delta: -1.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1523.35 ms. Allocated memory is still 152.0 MB. Free memory was 102.9 MB in the beginning and 57.3 MB in the end (delta: 45.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 549]: 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] a->h = 2 [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND FALSE !(p->h != 2) [L551] EXPR p->n [L551] p = p->n [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND TRUE p->h != 2 [L549] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 63 SDslu, 123 SDs, 0 SdLazy, 158 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 2 MinimizatonAttempts, 30 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...