/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:59:22,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:59:22,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:59:22,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:59:22,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:59:22,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:59:22,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:59:22,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:59:22,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:59:22,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:59:22,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:59:22,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:59:22,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:59:22,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:59:22,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:59:22,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:59:22,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:59:22,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:59:22,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:59:22,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:59:22,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:59:22,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:59:22,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:59:22,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:59:22,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 03:59:22,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 03:59:22,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 03:59:22,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 03:59:22,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 03:59:22,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 03:59:22,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:59:22,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:59:22,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:59:22,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:59:22,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:59:22,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:59:22,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:59:22,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:59:22,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:59:22,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:59:22,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:59:22,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:59:22,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:59:22,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:59:22,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:59:22,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:59:22,576 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:59:22,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:59:22,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:59:22,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:59:22,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:59:22,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:59:22,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:59:22,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:59:22,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:59:22,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:59:22,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:59:22,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:59:22,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:59:22,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:59:22,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:59:22,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:59:22,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:59:22,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:59:22,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:59:22,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:59:22,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:59:22,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:59:22,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:59:22,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:59:22,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:59:22,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:59:22,991 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:59:22,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-1.i [2020-12-22 03:59:23,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac895e754/bdaa04e60ffa422480695a71e9ab7234/FLAGfc0c99f1a [2020-12-22 03:59:23,782 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:59:23,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i [2020-12-22 03:59:23,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac895e754/bdaa04e60ffa422480695a71e9ab7234/FLAGfc0c99f1a [2020-12-22 03:59:24,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac895e754/bdaa04e60ffa422480695a71e9ab7234 [2020-12-22 03:59:24,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:59:24,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:59:24,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:59:24,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:59:24,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:59:24,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c17ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24, skipping insertion in model container [2020-12-22 03:59:24,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:59:24,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:59:24,503 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2020-12-22 03:59:24,509 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2020-12-22 03:59:24,511 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2020-12-22 03:59:24,513 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2020-12-22 03:59:24,514 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2020-12-22 03:59:24,517 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2020-12-22 03:59:24,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:59:24,531 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:59:24,568 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2020-12-22 03:59:24,570 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2020-12-22 03:59:24,571 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2020-12-22 03:59:24,573 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2020-12-22 03:59:24,574 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2020-12-22 03:59:24,576 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2020-12-22 03:59:24,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:59:24,641 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:59:24,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24 WrapperNode [2020-12-22 03:59:24,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:59:24,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:59:24,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:59:24,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:59:24,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:59:24,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:59:24,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:59:24,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:59:24,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (1/1) ... [2020-12-22 03:59:24,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:59:24,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:59:24,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:59:24,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:59:24,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (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 [2020-12-22 03:59:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:59:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:59:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 03:59:24,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 03:59:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:59:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 03:59:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:59:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:59:24,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:59:24,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:59:25,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:59:25,463 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-22 03:59:25,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:59:25 BoogieIcfgContainer [2020-12-22 03:59:25,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:59:25,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:59:25,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:59:25,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:59:25,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:59:24" (1/3) ... [2020-12-22 03:59:25,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46691908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:59:25, skipping insertion in model container [2020-12-22 03:59:25,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:59:24" (2/3) ... [2020-12-22 03:59:25,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46691908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:59:25, skipping insertion in model container [2020-12-22 03:59:25,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:59:25" (3/3) ... [2020-12-22 03:59:25,476 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-12-22 03:59:25,484 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:59:25,491 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 03:59:25,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 03:59:25,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:59:25,548 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:59:25,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:59:25,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:59:25,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:59:25,549 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:59:25,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:59:25,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:59:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-22 03:59:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 03:59:25,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:59:25,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 03:59:25,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:59:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:59:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash 890337990, now seen corresponding path program 1 times [2020-12-22 03:59:25,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:59:25,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831275402] [2020-12-22 03:59:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:59:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:59:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:59:25,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831275402] [2020-12-22 03:59:25,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:59:25,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:59:25,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244315504] [2020-12-22 03:59:25,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:59:25,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:59:25,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:59:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:59:25,804 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-22 03:59:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:59:25,827 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-12-22 03:59:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:59:25,829 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 03:59:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:59:25,841 INFO L225 Difference]: With dead ends: 86 [2020-12-22 03:59:25,841 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 03:59:25,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:59:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 03:59:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 03:59:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 03:59:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 03:59:25,886 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 6 [2020-12-22 03:59:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:59:25,886 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 03:59:25,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:59:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 03:59:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 03:59:25,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:59:25,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 03:59:25,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:59:25,888 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:59:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:59:25,889 INFO L82 PathProgramCache]: Analyzing trace with hash 889571369, now seen corresponding path program 1 times [2020-12-22 03:59:25,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:59:25,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875515208] [2020-12-22 03:59:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:59:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:59:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:59:25,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875515208] [2020-12-22 03:59:26,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:59:26,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:59:26,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961097587] [2020-12-22 03:59:26,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:59:26,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:59:26,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:59:26,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:59:26,006 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 3 states. [2020-12-22 03:59:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:59:26,084 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-22 03:59:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:59:26,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 03:59:26,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:59:26,087 INFO L225 Difference]: With dead ends: 39 [2020-12-22 03:59:26,088 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 03:59:26,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:59:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 03:59:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 03:59:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 03:59:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 03:59:26,095 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2020-12-22 03:59:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:59:26,096 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 03:59:26,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:59:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 03:59:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 03:59:26,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:59:26,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:59:26,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:59:26,098 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:59:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:59:26,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1806865149, now seen corresponding path program 1 times [2020-12-22 03:59:26,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:59:26,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260454820] [2020-12-22 03:59:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:59:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:59:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:59:26,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260454820] [2020-12-22 03:59:26,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:59:26,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:59:26,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453254565] [2020-12-22 03:59:26,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:59:26,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:59:26,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:59:26,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:59:26,161 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-22 03:59:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:59:26,234 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-12-22 03:59:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 03:59:26,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 03:59:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:59:26,236 INFO L225 Difference]: With dead ends: 63 [2020-12-22 03:59:26,236 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 03:59:26,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:59:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 03:59:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 35. [2020-12-22 03:59:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 03:59:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 03:59:26,245 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-12-22 03:59:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:59:26,245 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 03:59:26,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:59:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 03:59:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:59:26,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:59:26,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:59:26,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:59:26,247 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:59:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:59:26,248 INFO L82 PathProgramCache]: Analyzing trace with hash -913382283, now seen corresponding path program 1 times [2020-12-22 03:59:26,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:59:26,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753695608] [2020-12-22 03:59:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:59:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:59:26,283 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:59:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:59:26,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:59:26,355 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:59:26,356 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:59:26,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:59:26,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:59:26 BoogieIcfgContainer [2020-12-22 03:59:26,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:59:26,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:59:26,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:59:26,391 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:59:26,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:59:25" (3/4) ... [2020-12-22 03:59:26,394 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 03:59:26,445 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/forester-heap/sll-token-1.i-witness.graphml [2020-12-22 03:59:26,446 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:59:26,448 INFO L168 Benchmark]: Toolchain (without parser) took 2379.61 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 62.4 MB in the end (delta: 63.6 MB). Peak memory consumption was 64.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,449 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:59:26,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 103.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.17 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 134.5 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,451 INFO L168 Benchmark]: Boogie Preprocessor took 34.04 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 132.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,452 INFO L168 Benchmark]: RCFGBuilder took 709.10 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 109.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,453 INFO L168 Benchmark]: TraceAbstraction took 922.56 ms. Allocated memory is still 151.0 MB. Free memory was 109.0 MB in the beginning and 64.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,453 INFO L168 Benchmark]: Witness Printer took 55.13 ms. Allocated memory is still 151.0 MB. Free memory was 64.5 MB in the beginning and 62.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:59:26,457 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 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 572.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 103.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 78.17 ms. Allocated memory is still 151.0 MB. Free memory was 103.1 MB in the beginning and 134.5 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.04 ms. Allocated memory is still 151.0 MB. Free memory was 134.5 MB in the beginning and 132.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 709.10 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 109.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 922.56 ms. Allocated memory is still 151.0 MB. Free memory was 109.0 MB in the beginning and 64.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. * Witness Printer took 55.13 ms. Allocated memory is still 151.0 MB. Free memory was 64.5 MB in the beginning and 62.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 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 1 procedures, 44 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 SDtfs, 76 SDslu, 44 SDs, 0 SdLazy, 39 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...