/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:09:48,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:09:48,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:09:48,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:09:48,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:09:48,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:09:48,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:09:48,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:09:48,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:09:48,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:09:48,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:09:48,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:09:48,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:09:48,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:09:48,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:09:48,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:09:48,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:09:48,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:09:48,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:09:48,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:09:48,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:09:48,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:09:48,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:09:48,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:09:48,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:09:48,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:09:48,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:09:48,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:09:48,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:09:48,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:09:48,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:09:48,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:09:48,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:09:48,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:09:48,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:09:48,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:09:48,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:09:48,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:09:48,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:09:48,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:09:48,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:09:48,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:09:48,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:09:48,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:09:48,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:09:48,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:09:48,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:09:48,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:09:48,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:09:48,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:09:48,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:09:48,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:09:48,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:09:48,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:09:48,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:09:48,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:09:48,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:09:48,630 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:09:48,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:09:48,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:09:48,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:09:48,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:09:48,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:09:48,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:09:48,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:09:49,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:09:49,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:09:49,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:09:49,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:09:49,084 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:09:49,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2021-02-23 18:09:49,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/059ec026e/ad0761313fd74d49aea7d1b88567251e/FLAGd4ff45a91 [2021-02-23 18:09:49,789 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:09:49,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2021-02-23 18:09:49,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/059ec026e/ad0761313fd74d49aea7d1b88567251e/FLAGd4ff45a91 [2021-02-23 18:09:50,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/059ec026e/ad0761313fd74d49aea7d1b88567251e [2021-02-23 18:09:50,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:09:50,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:09:50,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:50,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:09:50,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:09:50,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:50,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c51995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50, skipping insertion in model container [2021-02-23 18:09:50,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:50,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:09:50,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:09:50,649 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] [2021-02-23 18:09:50,666 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] [2021-02-23 18:09:50,668 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] [2021-02-23 18:09:50,671 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] [2021-02-23 18:09:50,673 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] [2021-02-23 18:09:50,679 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] [2021-02-23 18:09:50,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:50,703 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:09:50,771 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] [2021-02-23 18:09:50,777 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] [2021-02-23 18:09:50,779 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] [2021-02-23 18:09:50,782 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] [2021-02-23 18:09:50,786 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] [2021-02-23 18:09:50,791 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] [2021-02-23 18:09:50,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:50,870 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:09:50,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50 WrapperNode [2021-02-23 18:09:50,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:50,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:09:50,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:09:50,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:09:50,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:50,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:50,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:50,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:50,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:51,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:51,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (1/1) ... [2021-02-23 18:09:51,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:09:51,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:09:51,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:09:51,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:09:51,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (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 [2021-02-23 18:09:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:09:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:09:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:09:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:09:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:09:51,187 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:09:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:09:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:09:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:09:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:09:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:09:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:09:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:09:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:09:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:09:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:09:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:09:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:09:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:09:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:09:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:09:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:09:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:09:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:09:51,197 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:09:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:09:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:09:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:09:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:09:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:09:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:09:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:09:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:09:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:09:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:09:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:09:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:09:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:09:51,202 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:09:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:09:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:09:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:09:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:09:51,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:09:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:09:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:09:51,204 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:09:51,205 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:09:51,205 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:09:51,205 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:09:51,205 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:09:51,206 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:09:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:09:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:09:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:09:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:09:51,207 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:09:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:09:51,208 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:09:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:09:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:09:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:09:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:09:51,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:09:51,210 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:09:51,211 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:09:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:09:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:09:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:09:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:09:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:09:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:09:51,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:09:51,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:09:51,977 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-02-23 18:09:51,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:51 BoogieIcfgContainer [2021-02-23 18:09:51,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:09:51,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:09:51,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:09:51,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:09:51,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:09:50" (1/3) ... [2021-02-23 18:09:51,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798085cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:51, skipping insertion in model container [2021-02-23 18:09:51,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:50" (2/3) ... [2021-02-23 18:09:51,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798085cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:51, skipping insertion in model container [2021-02-23 18:09:51,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:51" (3/3) ... [2021-02-23 18:09:51,989 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2021-02-23 18:09:51,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:09:52,003 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-23 18:09:52,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-23 18:09:52,052 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:09:52,052 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:09:52,052 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:09:52,052 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:09:52,053 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:09:52,053 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:09:52,053 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:09:52,053 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:09:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2021-02-23 18:09:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 18:09:52,083 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:52,084 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] [2021-02-23 18:09:52,084 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1147309973, now seen corresponding path program 1 times [2021-02-23 18:09:52,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:52,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223912048] [2021-02-23 18:09:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:52,219 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:52,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:52,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:52,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223912048] [2021-02-23 18:09:52,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:52,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:09:52,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075285500] [2021-02-23 18:09:52,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:09:52,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:52,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:09:52,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:09:52,536 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2021-02-23 18:09:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:52,920 INFO L93 Difference]: Finished difference Result 186 states and 232 transitions. [2021-02-23 18:09:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:09:52,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-23 18:09:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:52,933 INFO L225 Difference]: With dead ends: 186 [2021-02-23 18:09:52,933 INFO L226 Difference]: Without dead ends: 87 [2021-02-23 18:09:52,938 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 [2021-02-23 18:09:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-23 18:09:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-02-23 18:09:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-23 18:09:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2021-02-23 18:09:52,992 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 26 [2021-02-23 18:09:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:52,992 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2021-02-23 18:09:52,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:09:52,993 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2021-02-23 18:09:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 18:09:52,994 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:52,994 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] [2021-02-23 18:09:52,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:09:52,995 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:52,996 INFO L82 PathProgramCache]: Analyzing trace with hash -324345808, now seen corresponding path program 1 times [2021-02-23 18:09:52,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:52,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777041312] [2021-02-23 18:09:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:53,003 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:53,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:53,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:09:53,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:53,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:53,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:53,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:53,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777041312] [2021-02-23 18:09:53,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:53,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:09:53,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467049599] [2021-02-23 18:09:53,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:09:53,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:53,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:09:53,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:09:53,255 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 7 states. [2021-02-23 18:09:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:53,876 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2021-02-23 18:09:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:09:53,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-02-23 18:09:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:53,879 INFO L225 Difference]: With dead ends: 152 [2021-02-23 18:09:53,880 INFO L226 Difference]: Without dead ends: 150 [2021-02-23 18:09:53,881 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 [2021-02-23 18:09:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-02-23 18:09:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 85. [2021-02-23 18:09:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-23 18:09:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2021-02-23 18:09:53,897 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 27 [2021-02-23 18:09:53,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:53,897 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2021-02-23 18:09:53,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:09:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2021-02-23 18:09:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 18:09:53,899 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:53,899 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] [2021-02-23 18:09:53,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:09:53,899 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:53,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1680762442, now seen corresponding path program 1 times [2021-02-23 18:09:53,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:53,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943758626] [2021-02-23 18:09:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:53,906 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:53,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:53,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:54,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:54,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:54,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:54,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943758626] [2021-02-23 18:09:54,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:54,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:09:54,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043999244] [2021-02-23 18:09:54,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:09:54,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:54,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:09:54,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:09:54,084 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 6 states. [2021-02-23 18:09:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:54,359 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-02-23 18:09:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:09:54,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-02-23 18:09:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:54,362 INFO L225 Difference]: With dead ends: 146 [2021-02-23 18:09:54,362 INFO L226 Difference]: Without dead ends: 144 [2021-02-23 18:09:54,363 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 [2021-02-23 18:09:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-23 18:09:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 83. [2021-02-23 18:09:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-23 18:09:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2021-02-23 18:09:54,380 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 28 [2021-02-23 18:09:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:54,380 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2021-02-23 18:09:54,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:09:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2021-02-23 18:09:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 18:09:54,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:54,382 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] [2021-02-23 18:09:54,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:09:54,383 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1303914361, now seen corresponding path program 1 times [2021-02-23 18:09:54,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:54,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580940201] [2021-02-23 18:09:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:54,389 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:54,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:54,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:54,559 WARN L141 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size [2021-02-23 18:09:54,560 WARN L147 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size 15 [2021-02-23 18:09:54,575 WARN L141 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-02-23 18:09:54,577 WARN L147 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size 29 [2021-02-23 18:09:54,608 WARN L141 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size [2021-02-23 18:09:54,610 WARN L147 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size 28 [2021-02-23 18:09:54,649 WARN L141 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-02-23 18:09:54,650 WARN L147 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size 32 [2021-02-23 18:09:54,682 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 18:09:54,683 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 18:09:54,701 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-23 18:09:54,702 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-23 18:09:54,719 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-23 18:09:54,720 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-23 18:09:54,737 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 18:09:54,738 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 18:09:54,756 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-23 18:09:54,757 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-23 18:09:54,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:54,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:54,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580940201] [2021-02-23 18:09:54,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:54,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 18:09:54,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586183729] [2021-02-23 18:09:54,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 18:09:54,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:54,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 18:09:54,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-23 18:09:54,813 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 13 states. [2021-02-23 18:09:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:55,571 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2021-02-23 18:09:55,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:09:55,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2021-02-23 18:09:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:55,574 INFO L225 Difference]: With dead ends: 227 [2021-02-23 18:09:55,574 INFO L226 Difference]: Without dead ends: 181 [2021-02-23 18:09:55,575 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 [2021-02-23 18:09:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-02-23 18:09:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 97. [2021-02-23 18:09:55,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-23 18:09:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-02-23 18:09:55,602 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 35 [2021-02-23 18:09:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:55,602 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-02-23 18:09:55,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 18:09:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-02-23 18:09:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 18:09:55,604 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:55,604 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] [2021-02-23 18:09:55,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:09:55,605 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:55,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1391741209, now seen corresponding path program 1 times [2021-02-23 18:09:55,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:55,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945118910] [2021-02-23 18:09:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:55,611 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:55,634 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:55,656 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:55,697 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:09:55,698 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:09:55,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:09:55,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:09:55 BoogieIcfgContainer [2021-02-23 18:09:55,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:09:55,733 INFO L168 Benchmark]: Toolchain (without parser) took 5644.26 ms. Allocated memory was 160.4 MB in the beginning and 208.7 MB in the end (delta: 48.2 MB). Free memory was 134.6 MB in the beginning and 94.4 MB in the end (delta: 40.2 MB). Peak memory consumption was 89.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:55,735 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory was 133.7 MB in the beginning and 133.6 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:09:55,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.48 ms. Allocated memory is still 160.4 MB. Free memory was 133.3 MB in the beginning and 110.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:55,745 INFO L168 Benchmark]: Boogie Preprocessor took 159.86 ms. Allocated memory is still 160.4 MB. Free memory was 110.9 MB in the beginning and 142.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:55,746 INFO L168 Benchmark]: RCFGBuilder took 944.97 ms. Allocated memory is still 160.4 MB. Free memory was 142.0 MB in the beginning and 93.7 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:55,750 INFO L168 Benchmark]: TraceAbstraction took 3749.78 ms. Allocated memory was 160.4 MB in the beginning and 208.7 MB in the end (delta: 48.2 MB). Free memory was 93.7 MB in the beginning and 94.4 MB in the end (delta: -660.2 kB). Peak memory consumption was 49.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:55,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 160.4 MB. Free memory was 133.7 MB in the beginning and 133.6 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 756.48 ms. Allocated memory is still 160.4 MB. Free memory was 133.3 MB in the beginning and 110.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 159.86 ms. Allocated memory is still 160.4 MB. Free memory was 110.9 MB in the beginning and 142.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 944.97 ms. Allocated memory is still 160.4 MB. Free memory was 142.0 MB in the beginning and 93.7 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3749.78 ms. Allocated memory was 160.4 MB in the beginning and 208.7 MB in the end (delta: 48.2 MB). Free memory was 93.7 MB in the beginning and 94.4 MB in the end (delta: -660.2 kB). Peak memory consumption was 49.1 MB. 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: 3.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.0s, 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, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s 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...