./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-token-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95135695b4ab9cb9c416390540cae35b9fbb32e4 ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:08:32,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:08:32,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:08:33,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:08:33,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:08:33,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:08:33,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:08:33,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:08:33,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:08:33,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:08:33,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:08:33,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:08:33,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:08:33,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:08:33,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:08:33,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:08:33,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:08:33,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:08:33,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:08:33,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:08:33,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:08:33,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:08:33,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:08:33,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:08:33,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:08:33,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:08:33,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:08:33,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:08:33,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:08:33,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:08:33,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:08:33,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:08:33,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:08:33,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:08:33,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:08:33,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:08:33,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:08:33,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:08:33,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:08:33,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:08:33,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:08:33,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:08:33,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:08:33,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:08:33,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:08:33,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:08:33,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:08:33,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:08:33,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:08:33,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:08:33,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:08:33,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:08:33,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:08:33,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:08:33,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:08:33,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:08:33,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:08:33,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:08:33,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:08:33,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:08:33,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:08:33,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:08:33,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:08:33,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:08:33,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:08:33,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:08:33,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:08:33,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:08:33,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:08:33,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:08:33,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:08:33,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95135695b4ab9cb9c416390540cae35b9fbb32e4 [2020-10-25 22:08:33,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:08:33,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:08:33,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:08:33,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:08:33,726 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:08:33,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-1.i [2020-10-25 22:08:33,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e01f641/e9b31b3c79024ad8af6c5f37bf00cced/FLAG873efae49 [2020-10-25 22:08:34,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:08:34,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i [2020-10-25 22:08:34,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e01f641/e9b31b3c79024ad8af6c5f37bf00cced/FLAG873efae49 [2020-10-25 22:08:34,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67e01f641/e9b31b3c79024ad8af6c5f37bf00cced [2020-10-25 22:08:34,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:08:34,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:08:34,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:08:34,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:08:34,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:08:34,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:08:34" (1/1) ... [2020-10-25 22:08:34,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55876b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:34, skipping insertion in model container [2020-10-25 22:08:34,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:08:34" (1/1) ... [2020-10-25 22:08:34,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:08:34,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:08:35,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:08:35,174 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:08:35,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:08:35,302 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:08:35,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35 WrapperNode [2020-10-25 22:08:35,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:08:35,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:08:35,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:08:35,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:08:35,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:08:35,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:08:35,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:08:35,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:08:35,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (1/1) ... [2020-10-25 22:08:35,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:08:35,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:08:35,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:08:35,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:08:35,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (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 [2020-10-25 22:08:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:08:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:08:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:08:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:08:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:08:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:08:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:08:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:08:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:08:35,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:08:36,020 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:08:36,021 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-25 22:08:36,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:08:36 BoogieIcfgContainer [2020-10-25 22:08:36,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:08:36,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:08:36,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:08:36,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:08:36,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:08:34" (1/3) ... [2020-10-25 22:08:36,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdf27e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:08:36, skipping insertion in model container [2020-10-25 22:08:36,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:08:35" (2/3) ... [2020-10-25 22:08:36,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdf27e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:08:36, skipping insertion in model container [2020-10-25 22:08:36,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:08:36" (3/3) ... [2020-10-25 22:08:36,034 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-10-25 22:08:36,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:08:36,059 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-25 22:08:36,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-25 22:08:36,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:08:36,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:08:36,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:08:36,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:08:36,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:08:36,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:08:36,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:08:36,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:08:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-25 22:08:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:08:36,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:08:36,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:08:36,163 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]=== [2020-10-25 22:08:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:08:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1837354219, now seen corresponding path program 1 times [2020-10-25 22:08:36,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:08:36,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125992347] [2020-10-25 22:08:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:08:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:08:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:08:36,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125992347] [2020-10-25 22:08:36,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:08:36,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 22:08:36,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869089919] [2020-10-25 22:08:36,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 22:08:36,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:08:36,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 22:08:36,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 22:08:36,479 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-10-25 22:08:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:08:36,517 INFO L93 Difference]: Finished difference Result 104 states and 162 transitions. [2020-10-25 22:08:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 22:08:36,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-25 22:08:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:08:36,529 INFO L225 Difference]: With dead ends: 104 [2020-10-25 22:08:36,529 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 22:08:36,533 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 [2020-10-25 22:08:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 22:08:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-25 22:08:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 22:08:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-25 22:08:36,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 7 [2020-10-25 22:08:36,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:08:36,571 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-25 22:08:36,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 22:08:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-25 22:08:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:08:36,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:08:36,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:08:36,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:08:36,573 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]=== [2020-10-25 22:08:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:08:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1806908811, now seen corresponding path program 1 times [2020-10-25 22:08:36,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:08:36,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791841590] [2020-10-25 22:08:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:08:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:08:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:08:36,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791841590] [2020-10-25 22:08:36,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:08:36,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:08:36,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443720724] [2020-10-25 22:08:36,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:08:36,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:08:36,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:08:36,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:08:36,696 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 3 states. [2020-10-25 22:08:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:08:36,756 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-10-25 22:08:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:08:36,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-25 22:08:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:08:36,758 INFO L225 Difference]: With dead ends: 45 [2020-10-25 22:08:36,758 INFO L226 Difference]: Without dead ends: 42 [2020-10-25 22:08:36,759 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 [2020-10-25 22:08:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-25 22:08:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-25 22:08:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-25 22:08:36,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-25 22:08:36,766 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 7 [2020-10-25 22:08:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:08:36,767 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-25 22:08:36,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:08:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-25 22:08:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-25 22:08:36,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:08:36,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:08:36,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:08:36,768 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]=== [2020-10-25 22:08:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:08:36,769 INFO L82 PathProgramCache]: Analyzing trace with hash 178460429, now seen corresponding path program 1 times [2020-10-25 22:08:36,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:08:36,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426577302] [2020-10-25 22:08:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:08:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:08:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:08:36,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426577302] [2020-10-25 22:08:36,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:08:36,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:08:36,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512175381] [2020-10-25 22:08:36,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:08:36,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:08:36,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:08:36,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:08:36,835 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 4 states. [2020-10-25 22:08:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:08:36,911 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-10-25 22:08:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:08:36,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-25 22:08:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:08:36,914 INFO L225 Difference]: With dead ends: 72 [2020-10-25 22:08:36,914 INFO L226 Difference]: Without dead ends: 69 [2020-10-25 22:08:36,915 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 [2020-10-25 22:08:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-25 22:08:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2020-10-25 22:08:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-25 22:08:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-25 22:08:36,933 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 8 [2020-10-25 22:08:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:08:36,934 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-25 22:08:36,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:08:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-25 22:08:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 22:08:36,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:08:36,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:08:36,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 22:08:36,937 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]=== [2020-10-25 22:08:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:08:36,938 INFO L82 PathProgramCache]: Analyzing trace with hash 566715598, now seen corresponding path program 1 times [2020-10-25 22:08:36,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:08:36,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469530992] [2020-10-25 22:08:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:08:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:08:37,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:08:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:08:37,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:08:37,070 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:08:37,070 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:08:37,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:08:37,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:08:37 BoogieIcfgContainer [2020-10-25 22:08:37,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:08:37,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:08:37,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:08:37,103 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:08:37,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:08:36" (3/4) ... [2020-10-25 22:08:37,107 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:08:37,156 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:08:37,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:08:37,159 INFO L168 Benchmark]: Toolchain (without parser) took 2424.46 ms. Allocated memory was 46.1 MB in the beginning and 75.5 MB in the end (delta: 29.4 MB). Free memory was 22.7 MB in the beginning and 48.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:08:37,159 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory is still 30.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:08:37,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.08 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.1 MB in the beginning and 34.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:08:37,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.02 ms. Allocated memory is still 58.7 MB. Free memory was 34.3 MB in the beginning and 32.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:08:37,162 INFO L168 Benchmark]: Boogie Preprocessor took 45.62 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 30.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:08:37,162 INFO L168 Benchmark]: RCFGBuilder took 572.62 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 41.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:08:37,163 INFO L168 Benchmark]: TraceAbstraction took 1077.34 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 41.4 MB in the beginning and 50.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:08:37,164 INFO L168 Benchmark]: Witness Printer took 52.96 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 48.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:08:37,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory is still 30.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.08 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.1 MB in the beginning and 34.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.02 ms. Allocated memory is still 58.7 MB. Free memory was 34.3 MB in the beginning and 32.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.62 ms. Allocated memory is still 58.7 MB. Free memory was 32.4 MB in the beginning and 30.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 572.62 ms. Allocated memory is still 58.7 MB. Free memory was 30.5 MB in the beginning and 41.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1077.34 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 41.4 MB in the beginning and 50.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 52.96 ms. Allocated memory is still 75.5 MB. Free memory was 50.1 MB in the beginning and 48.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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) [L992] COND FALSE !(0) [L992] __assert_fail ("0", "sll-token-1.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 86 SDslu, 54 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=56occurred 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, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 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...