/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/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:25:28,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:25:28,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:25:28,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:25:28,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:25:28,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:25:28,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:25:28,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:25:28,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:25:28,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:25:28,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:25:28,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:25:28,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:25:28,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:25:28,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:25:28,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:25:28,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:25:28,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:25:28,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:25:28,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:25:28,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:25:28,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:25:28,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:25:28,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:25:28,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:25:28,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:25:28,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:25:28,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:25:28,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:25:28,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:25:28,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:25:28,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:25:28,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:25:28,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:25:28,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:25:28,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:25:28,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:25:28,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:25:28,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:25:28,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:25:28,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:25:28,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:25:28,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:25:28,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:25:28,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:25:28,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:25:28,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:25:28,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:25:28,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:25:28,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:25:28,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:25:28,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:25:28,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:25:28,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:25:28,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:25:28,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:25:28,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:25:28,684 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:25:28,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:25:28,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:25:28,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:25:28,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:25:28,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:25:28,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:25:28,685 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:25:28,685 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:25:29,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:25:29,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:25:29,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:25:29,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:25:29,195 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:25:29,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2021-02-24 04:25:29,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bf2eb69/d6bf933d46c74aa6ae7cd9046967d5f5/FLAGddfb59f6a [2021-02-24 04:25:30,105 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:25:30,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2021-02-24 04:25:30,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bf2eb69/d6bf933d46c74aa6ae7cd9046967d5f5/FLAGddfb59f6a [2021-02-24 04:25:30,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27bf2eb69/d6bf933d46c74aa6ae7cd9046967d5f5 [2021-02-24 04:25:30,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:25:30,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:25:30,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:25:30,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:25:30,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:25:30,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:25:30" (1/1) ... [2021-02-24 04:25:30,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ee6c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:30, skipping insertion in model container [2021-02-24 04:25:30,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:25:30" (1/1) ... [2021-02-24 04:25:30,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:25:30,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:25:30,923 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-02-24 04:25:30,928 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-02-24 04:25:30,931 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-02-24 04:25:30,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:25:30,947 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:25:30,988 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-02-24 04:25:30,990 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-02-24 04:25:30,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-02-24 04:25:30,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:25:31,061 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:25:31,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31 WrapperNode [2021-02-24 04:25:31,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:25:31,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:25:31,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:25:31,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:25:31,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... [2021-02-24 04:25:31,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:25:31,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:25:31,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:25:31,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:25:31,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:25:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:25:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:25:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:25:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:25:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-24 04:25:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-24 04:25:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-24 04:25:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-24 04:25:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-24 04:25:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-24 04:25:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-24 04:25:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-24 04:25:31,332 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-24 04:25:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-24 04:25:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-24 04:25:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-24 04:25:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-24 04:25:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-24 04:25:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-24 04:25:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-24 04:25:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-24 04:25:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-24 04:25:31,341 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-24 04:25:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-24 04:25:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-24 04:25:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-24 04:25:31,342 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-24 04:25:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-24 04:25:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-24 04:25:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-24 04:25:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-24 04:25:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-24 04:25:31,343 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-24 04:25:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-24 04:25:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-24 04:25:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-24 04:25:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-24 04:25:31,344 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-24 04:25:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-24 04:25:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-24 04:25:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-24 04:25:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-24 04:25:31,345 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-24 04:25:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-24 04:25:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-24 04:25:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-24 04:25:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-24 04:25:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-24 04:25:31,346 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-24 04:25:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-24 04:25:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-24 04:25:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-24 04:25:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-24 04:25:31,347 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-24 04:25:31,348 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:25:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-24 04:25:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-24 04:25:31,349 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 04:25:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-24 04:25:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-24 04:25:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-24 04:25:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-24 04:25:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-24 04:25:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:25:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-24 04:25:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-24 04:25:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-24 04:25:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-24 04:25:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-24 04:25:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-24 04:25:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-24 04:25:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-24 04:25:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-24 04:25:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-24 04:25:31,354 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-24 04:25:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-24 04:25:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-24 04:25:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-24 04:25:31,355 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-24 04:25:31,356 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-24 04:25:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-24 04:25:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-24 04:25:31,357 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-24 04:25:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-24 04:25:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-24 04:25:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-24 04:25:31,358 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-24 04:25:31,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-24 04:25:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-24 04:25:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-24 04:25:31,360 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-24 04:25:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-24 04:25:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-24 04:25:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-24 04:25:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-24 04:25:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-24 04:25:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-24 04:25:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-24 04:25:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-24 04:25:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-24 04:25:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-24 04:25:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:25:31,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:25:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:25:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:25:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:25:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:25:31,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:25:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:25:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:25:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:25:31,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:25:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:25:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:25:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:25:31,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:25:31,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:25:32,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:25:32,280 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-02-24 04:25:32,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:25:32 BoogieIcfgContainer [2021-02-24 04:25:32,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:25:32,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:25:32,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:25:32,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:25:32,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:25:30" (1/3) ... [2021-02-24 04:25:32,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146a576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:25:32, skipping insertion in model container [2021-02-24 04:25:32,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:25:31" (2/3) ... [2021-02-24 04:25:32,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@146a576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:25:32, skipping insertion in model container [2021-02-24 04:25:32,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:25:32" (3/3) ... [2021-02-24 04:25:32,304 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-02-24 04:25:32,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:25:32,319 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-24 04:25:32,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-24 04:25:32,386 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:25:32,386 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:25:32,386 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:25:32,386 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:25:32,387 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:25:32,387 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:25:32,387 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:25:32,387 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:25:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2021-02-24 04:25:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-24 04:25:32,417 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:25:32,418 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] [2021-02-24 04:25:32,418 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:25:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:25:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash -895071465, now seen corresponding path program 1 times [2021-02-24 04:25:32,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:25:32,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018528014] [2021-02-24 04:25:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:25:32,529 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:25:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:25:32,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:32,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:32,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:32,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:25:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:25:32,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:32,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:25:32,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018528014] [2021-02-24 04:25:32,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:25:32,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:25:32,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677756295] [2021-02-24 04:25:32,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:25:32,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:25:32,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:25:32,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:25:32,778 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2021-02-24 04:25:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:25:33,093 INFO L93 Difference]: Finished difference Result 163 states and 194 transitions. [2021-02-24 04:25:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:25:33,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-24 04:25:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:25:33,107 INFO L225 Difference]: With dead ends: 163 [2021-02-24 04:25:33,107 INFO L226 Difference]: Without dead ends: 80 [2021-02-24 04:25:33,112 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 [2021-02-24 04:25:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-24 04:25:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-02-24 04:25:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-24 04:25:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2021-02-24 04:25:33,190 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 22 [2021-02-24 04:25:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:25:33,191 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2021-02-24 04:25:33,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:25:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2021-02-24 04:25:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 04:25:33,193 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:25:33,193 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] [2021-02-24 04:25:33,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:25:33,194 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:25:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:25:33,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1748629041, now seen corresponding path program 1 times [2021-02-24 04:25:33,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:25:33,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977687551] [2021-02-24 04:25:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:25:33,202 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:25:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:25:33,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:33,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:25:33,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:25:33,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:25:33,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:25:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:25:33,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:33,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:25:33,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977687551] [2021-02-24 04:25:33,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:25:33,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:25:33,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066125942] [2021-02-24 04:25:33,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:25:33,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:25:33,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:25:33,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:25:33,392 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2021-02-24 04:25:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:25:33,718 INFO L93 Difference]: Finished difference Result 108 states and 113 transitions. [2021-02-24 04:25:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:25:33,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-24 04:25:33,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:25:33,721 INFO L225 Difference]: With dead ends: 108 [2021-02-24 04:25:33,721 INFO L226 Difference]: Without dead ends: 106 [2021-02-24 04:25:33,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:25:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-24 04:25:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 78. [2021-02-24 04:25:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:25:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-02-24 04:25:33,742 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 24 [2021-02-24 04:25:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:25:33,742 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-02-24 04:25:33,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:25:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-02-24 04:25:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 04:25:33,743 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:25:33,744 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] [2021-02-24 04:25:33,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:25:33,744 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:25:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:25:33,745 INFO L82 PathProgramCache]: Analyzing trace with hash 975517528, now seen corresponding path program 1 times [2021-02-24 04:25:33,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:25:33,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659787111] [2021-02-24 04:25:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:25:33,751 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:25:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:25:33,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:33,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:25:33,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:25:33,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:25:33,864 WARN L141 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-02-24 04:25:33,865 WARN L147 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size 9 [2021-02-24 04:25:33,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:25:33,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:25:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:25:33,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:25:33,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:25:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:25:33,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659787111] [2021-02-24 04:25:33,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:25:33,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:25:33,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040715241] [2021-02-24 04:25:33,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:25:33,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:25:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:25:33,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:25:33,928 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 8 states. [2021-02-24 04:25:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:25:34,262 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2021-02-24 04:25:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:25:34,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-24 04:25:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:25:34,264 INFO L225 Difference]: With dead ends: 132 [2021-02-24 04:25:34,265 INFO L226 Difference]: Without dead ends: 129 [2021-02-24 04:25:34,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:25:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-02-24 04:25:34,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 87. [2021-02-24 04:25:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-24 04:25:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2021-02-24 04:25:34,311 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 28 [2021-02-24 04:25:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:25:34,311 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2021-02-24 04:25:34,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:25:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2021-02-24 04:25:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:25:34,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:25:34,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:25:34,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:25:34,315 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:25:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:25:34,316 INFO L82 PathProgramCache]: Analyzing trace with hash 525692103, now seen corresponding path program 1 times [2021-02-24 04:25:34,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:25:34,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408757040] [2021-02-24 04:25:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:25:34,326 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:25:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:25:34,349 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:25:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:25:34,373 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:25:34,430 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:25:34,430 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:25:34,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:25:34,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:25:34 BoogieIcfgContainer [2021-02-24 04:25:34,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:25:34,463 INFO L168 Benchmark]: Toolchain (without parser) took 4077.31 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 145.9 MB in the beginning and 176.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:25:34,465 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 170.9 MB. Free memory is still 144.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:25:34,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.22 ms. Allocated memory is still 170.9 MB. Free memory was 144.8 MB in the beginning and 122.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:25:34,471 INFO L168 Benchmark]: Boogie Preprocessor took 93.10 ms. Allocated memory is still 170.9 MB. Free memory was 122.2 MB in the beginning and 119.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:25:34,472 INFO L168 Benchmark]: RCFGBuilder took 1126.02 ms. Allocated memory is still 170.9 MB. Free memory was 119.5 MB in the beginning and 104.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:25:34,473 INFO L168 Benchmark]: TraceAbstraction took 2174.22 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 104.1 MB in the beginning and 176.7 MB in the end (delta: -72.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:25:34,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 170.9 MB. Free memory is still 144.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 661.22 ms. Allocated memory is still 170.9 MB. Free memory was 144.8 MB in the beginning and 122.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.10 ms. Allocated memory is still 170.9 MB. Free memory was 122.2 MB in the beginning and 119.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1126.02 ms. Allocated memory is still 170.9 MB. Free memory was 119.5 MB in the beginning and 104.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2174.22 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 104.1 MB in the beginning and 176.7 MB in the end (delta: -72.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1051]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L1051] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 539 SDslu, 245 SDs, 0 SdLazy, 389 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 70 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...