/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/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:01:03,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:01:03,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:01:03,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:01:03,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:01:03,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:01:03,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:01:03,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:01:03,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:01:03,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:01:03,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:01:03,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:01:03,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:01:03,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:01:03,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:01:03,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:01:03,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:01:03,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:01:03,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:01:03,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:01:03,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:01:03,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:01:03,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:01:03,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:01:03,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:01:03,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:01:03,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:01:03,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:01:03,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:01:03,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:01:03,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:01:03,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:01:03,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:01:03,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:01:03,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:01:03,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:01:03,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:01:03,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:01:03,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:01:03,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:01:03,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:01:03,643 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 02:01:03,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:01:03,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:01:03,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:01:03,665 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:01:03,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:01:03,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:01:03,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:01:03,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:01:03,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:01:03,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:01:03,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:01:03,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:01:03,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:01:03,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:01:03,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:01:03,669 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:01:03,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:01:03,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:01:03,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:03,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:01:03,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:01:03,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:01:03,670 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:01:03,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:01:04,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:01:04,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:01:04,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:01:04,118 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:01:04,119 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:01:04,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2021-02-22 02:01:04,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1556a9a1f/dbe9df6bdd324ecfa2ca07a76d317a94/FLAGae72911ae [2021-02-22 02:01:04,999 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:01:05,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2021-02-22 02:01:05,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1556a9a1f/dbe9df6bdd324ecfa2ca07a76d317a94/FLAGae72911ae [2021-02-22 02:01:05,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1556a9a1f/dbe9df6bdd324ecfa2ca07a76d317a94 [2021-02-22 02:01:05,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:01:05,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:01:05,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:05,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:01:05,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:01:05,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ef00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05, skipping insertion in model container [2021-02-22 02:01:05,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:01:05,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:01:05,644 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/sll-token-1.i[22162,22175] [2021-02-22 02:01:05,666 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/sll-token-1.i[22311,22324] [2021-02-22 02:01:05,668 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/sll-token-1.i[22402,22415] [2021-02-22 02:01:05,671 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/sll-token-1.i[22484,22497] [2021-02-22 02:01:05,674 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/sll-token-1.i[22562,22575] [2021-02-22 02:01:05,677 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/sll-token-1.i[22708,22721] [2021-02-22 02:01:05,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:05,701 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:01:05,780 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/sll-token-1.i[22162,22175] [2021-02-22 02:01:05,785 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/sll-token-1.i[22311,22324] [2021-02-22 02:01:05,787 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/sll-token-1.i[22402,22415] [2021-02-22 02:01:05,792 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/sll-token-1.i[22484,22497] [2021-02-22 02:01:05,796 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/sll-token-1.i[22562,22575] [2021-02-22 02:01:05,801 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/sll-token-1.i[22708,22721] [2021-02-22 02:01:05,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:05,874 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:01:05,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05 WrapperNode [2021-02-22 02:01:05,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:05,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:01:05,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:01:05,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:01:05,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (1/1) ... [2021-02-22 02:01:05,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:01:05,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:01:05,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:01:05,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:01:05,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (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 02:01:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:01:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:01:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:01:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:01:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 02:01:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 02:01:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 02:01:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 02:01:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 02:01:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 02:01:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 02:01:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 02:01:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 02:01:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 02:01:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 02:01:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 02:01:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 02:01:06,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 02:01:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 02:01:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 02:01:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 02:01:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 02:01:06,097 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 02:01:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 02:01:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 02:01:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 02:01:06,098 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 02:01:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 02:01:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 02:01:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 02:01:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 02:01:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 02:01:06,099 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 02:01:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 02:01:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 02:01:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 02:01:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 02:01:06,100 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 02:01:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 02:01:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 02:01:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 02:01:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 02:01:06,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 02:01:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 02:01:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 02:01:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 02:01:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 02:01:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 02:01:06,102 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 02:01:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 02:01:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 02:01:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 02:01:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 02:01:06,103 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 02:01:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:01:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 02:01:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 02:01:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:01:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-22 02:01:06,104 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 02:01:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 02:01:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 02:01:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 02:01:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:01:06,105 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 02:01:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 02:01:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 02:01:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:01:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 02:01:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 02:01:06,106 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 02:01:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 02:01:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 02:01:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 02:01:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 02:01:06,107 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 02:01:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 02:01:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 02:01:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 02:01:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 02:01:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 02:01:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 02:01:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 02:01:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 02:01:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 02:01:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 02:01:06,109 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 02:01:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 02:01:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 02:01:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 02:01:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 02:01:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 02:01:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 02:01:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 02:01:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 02:01:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 02:01:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 02:01:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 02:01:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 02:01:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 02:01:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 02:01:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 02:01:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 02:01:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 02:01:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 02:01:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 02:01:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 02:01:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:01:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:01:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:01:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:01:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:01:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:01:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:01:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:01:06,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:01:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:01:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:01:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:01:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:01:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:01:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:01:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:01:06,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:01:06,801 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-02-22 02:01:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:06 BoogieIcfgContainer [2021-02-22 02:01:06,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:01:06,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:01:06,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:01:06,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:01:06,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:01:05" (1/3) ... [2021-02-22 02:01:06,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b543134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:06, skipping insertion in model container [2021-02-22 02:01:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:05" (2/3) ... [2021-02-22 02:01:06,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b543134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:06, skipping insertion in model container [2021-02-22 02:01:06,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:06" (3/3) ... [2021-02-22 02:01:06,825 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2021-02-22 02:01:06,839 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:01:06,851 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-22 02:01:06,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-22 02:01:06,923 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:01:06,923 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:01:06,924 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:01:06,924 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:01:06,925 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:01:06,925 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:01:06,925 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:01:06,925 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:01:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2021-02-22 02:01:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 02:01:06,974 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:06,975 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 02:01:06,975 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1147309973, now seen corresponding path program 1 times [2021-02-22 02:01:06,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:06,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463169946] [2021-02-22 02:01:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:07,152 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:07,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:07,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,410 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 02:01:07,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463169946] [2021-02-22 02:01:07,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:07,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:01:07,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12984825] [2021-02-22 02:01:07,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:01:07,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:07,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:01:07,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:01:07,443 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2021-02-22 02:01:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:07,711 INFO L93 Difference]: Finished difference Result 186 states and 232 transitions. [2021-02-22 02:01:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:01:07,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-22 02:01:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:07,724 INFO L225 Difference]: With dead ends: 186 [2021-02-22 02:01:07,725 INFO L226 Difference]: Without dead ends: 87 [2021-02-22 02:01:07,730 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 02:01:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-22 02:01:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-02-22 02:01:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-22 02:01:07,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2021-02-22 02:01:07,790 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 26 [2021-02-22 02:01:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:07,790 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2021-02-22 02:01:07,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:01:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2021-02-22 02:01:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-22 02:01:07,792 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:07,792 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] [2021-02-22 02:01:07,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:01:07,793 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:07,794 INFO L82 PathProgramCache]: Analyzing trace with hash -324345808, now seen corresponding path program 1 times [2021-02-22 02:01:07,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:07,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419460654] [2021-02-22 02:01:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:07,800 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:07,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:07,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 02:01:07,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:07,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:07,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:07,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,993 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 02:01:07,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419460654] [2021-02-22 02:01:07,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:07,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 02:01:07,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116521583] [2021-02-22 02:01:07,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 02:01:07,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 02:01:07,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 02:01:07,997 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 7 states. [2021-02-22 02:01:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:08,445 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2021-02-22 02:01:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 02:01:08,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-02-22 02:01:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:08,448 INFO L225 Difference]: With dead ends: 152 [2021-02-22 02:01:08,448 INFO L226 Difference]: Without dead ends: 150 [2021-02-22 02:01:08,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-22 02:01:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-02-22 02:01:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 85. [2021-02-22 02:01:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-22 02:01:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2021-02-22 02:01:08,464 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 27 [2021-02-22 02:01:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:08,465 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2021-02-22 02:01:08,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 02:01:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2021-02-22 02:01:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-22 02:01:08,466 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:08,466 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 02:01:08,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:01:08,467 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:08,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1680762442, now seen corresponding path program 1 times [2021-02-22 02:01:08,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:08,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035826628] [2021-02-22 02:01:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:08,473 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:08,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:08,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:08,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:08,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:08,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:08,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:08,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:08,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:08,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:08,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:08,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:08,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:08,632 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 02:01:08,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035826628] [2021-02-22 02:01:08,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:08,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:01:08,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774645978] [2021-02-22 02:01:08,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:01:08,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:08,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:01:08,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:01:08,641 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 6 states. [2021-02-22 02:01:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:08,873 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-02-22 02:01:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:01:08,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-02-22 02:01:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:08,875 INFO L225 Difference]: With dead ends: 146 [2021-02-22 02:01:08,875 INFO L226 Difference]: Without dead ends: 144 [2021-02-22 02:01:08,876 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 [2021-02-22 02:01:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-22 02:01:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 83. [2021-02-22 02:01:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-22 02:01:08,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2021-02-22 02:01:08,892 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 28 [2021-02-22 02:01:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:08,893 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2021-02-22 02:01:08,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:01:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2021-02-22 02:01:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 02:01:08,894 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:08,894 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] [2021-02-22 02:01:08,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:01:08,895 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1303914361, now seen corresponding path program 1 times [2021-02-22 02:01:08,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:08,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959232018] [2021-02-22 02:01:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:08,901 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:09,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:09,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:09,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:09,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:01:09,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:09,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:01:09,075 WARN L141 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size [2021-02-22 02:01:09,076 WARN L147 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size 15 [2021-02-22 02:01:09,092 WARN L141 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-02-22 02:01:09,094 WARN L147 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size 29 [2021-02-22 02:01:09,122 WARN L141 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size [2021-02-22 02:01:09,127 WARN L147 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size 28 [2021-02-22 02:01:09,176 WARN L141 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-02-22 02:01:09,177 WARN L147 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size 32 [2021-02-22 02:01:09,215 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-22 02:01:09,216 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-22 02:01:09,235 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-22 02:01:09,235 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-22 02:01:09,253 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-22 02:01:09,254 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-22 02:01:09,275 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-22 02:01:09,275 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-22 02:01:09,295 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-22 02:01:09,296 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-22 02:01:09,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:09,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:09,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:09,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:09,367 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 02:01:09,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959232018] [2021-02-22 02:01:09,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:09,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 02:01:09,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552592681] [2021-02-22 02:01:09,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 02:01:09,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:09,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 02:01:09,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-22 02:01:09,374 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 13 states. [2021-02-22 02:01:10,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:10,152 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2021-02-22 02:01:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 02:01:10,153 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2021-02-22 02:01:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:10,154 INFO L225 Difference]: With dead ends: 227 [2021-02-22 02:01:10,155 INFO L226 Difference]: Without dead ends: 181 [2021-02-22 02:01:10,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-02-22 02:01:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-02-22 02:01:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 97. [2021-02-22 02:01:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-22 02:01:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-02-22 02:01:10,184 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 35 [2021-02-22 02:01:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:10,184 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-02-22 02:01:10,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 02:01:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-02-22 02:01:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 02:01:10,186 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:10,186 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] [2021-02-22 02:01:10,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:01:10,186 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:10,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1391741209, now seen corresponding path program 1 times [2021-02-22 02:01:10,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:10,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962651511] [2021-02-22 02:01:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:10,192 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:10,214 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:10,235 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:10,282 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:01:10,282 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:01:10,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:01:10,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:01:10 BoogieIcfgContainer [2021-02-22 02:01:10,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:01:10,308 INFO L168 Benchmark]: Toolchain (without parser) took 5103.78 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.8 MB in the beginning and 125.2 MB in the end (delta: 558.2 kB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,309 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:10,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.59 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,318 INFO L168 Benchmark]: Boogie Preprocessor took 67.74 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 99.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,322 INFO L168 Benchmark]: RCFGBuilder took 861.33 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 86.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,322 INFO L168 Benchmark]: TraceAbstraction took 3497.04 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 85.6 MB in the beginning and 125.2 MB in the end (delta: -39.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:10,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 657.59 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.0 MB in the end (delta: 22.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.74 ms. Allocated memory is still 151.0 MB. Free memory was 102.0 MB in the beginning and 99.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 861.33 ms. Allocated memory is still 151.0 MB. Free memory was 99.3 MB in the beginning and 86.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3497.04 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 85.6 MB in the beginning and 125.2 MB in the end (delta: -39.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1026] EXPR x->data [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 109 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 360 SDtfs, 785 SDslu, 825 SDs, 0 SdLazy, 791 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred 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, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...