./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/dll-rb-cnstr_1-2.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 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 00:44:44,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:44:44,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:44:44,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:44:44,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:44:44,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:44:44,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:44:44,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:44:44,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:44:44,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:44:44,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:44:44,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:44:44,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:44:44,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:44:44,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:44:44,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:44:44,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:44:44,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:44:44,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:44:44,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:44:44,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:44:44,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:44:44,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:44:44,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:44:44,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:44:44,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:44:44,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:44:44,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:44:44,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:44:44,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:44:44,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:44:44,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:44:44,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:44:44,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:44:44,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:44:44,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:44:44,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:44:44,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:44:44,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:44:44,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:44:44,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:44:44,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:44:44,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:44:44,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:44:44,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:44:44,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:44:44,670 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:44:44,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:44:44,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:44:44,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:44:44,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:44:44,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:44:44,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:44:44,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:44:44,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:44:44,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:44:44,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:44:44,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:44:44,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:44:44,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:44:44,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:44:44,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:44:44,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:44:44,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:44:44,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:44:44,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:44:44,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:44:44,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:44:44,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:44:44,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:44:44,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:44:44,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2020-10-20 00:44:44,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:44:44,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:44:44,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:44:44,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:44:44,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:44:44,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-10-20 00:44:44,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fd5bf6e/8905cd2ba4ba475ba3c23dbb2cdb3cc5/FLAG24ebbe608 [2020-10-20 00:44:45,632 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:44:45,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2020-10-20 00:44:45,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fd5bf6e/8905cd2ba4ba475ba3c23dbb2cdb3cc5/FLAG24ebbe608 [2020-10-20 00:44:45,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16fd5bf6e/8905cd2ba4ba475ba3c23dbb2cdb3cc5 [2020-10-20 00:44:45,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:44:45,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:44:45,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:44:45,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:44:45,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:44:45,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:44:45" (1/1) ... [2020-10-20 00:44:45,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f55e739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:45, skipping insertion in model container [2020-10-20 00:44:45,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:44:45" (1/1) ... [2020-10-20 00:44:45,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:44:46,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:44:46,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:44:46,494 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:44:46,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:44:46,655 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:44:46,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46 WrapperNode [2020-10-20 00:44:46,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:44:46,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:44:46,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:44:46,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:44:46,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:44:46,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:44:46,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:44:46,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:44:46,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (1/1) ... [2020-10-20 00:44:46,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:44:46,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:44:46,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:44:46,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:44:46,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (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 [2020-10-20 00:44:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:44:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:44:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 00:44:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 00:44:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:44:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 00:44:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:44:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:44:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:44:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:44:47,351 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:44:47,351 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-10-20 00:44:47,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:47 BoogieIcfgContainer [2020-10-20 00:44:47,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:44:47,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:44:47,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:44:47,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:44:47,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:44:45" (1/3) ... [2020-10-20 00:44:47,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21016e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:44:47, skipping insertion in model container [2020-10-20 00:44:47,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:44:46" (2/3) ... [2020-10-20 00:44:47,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21016e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:44:47, skipping insertion in model container [2020-10-20 00:44:47,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:47" (3/3) ... [2020-10-20 00:44:47,364 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-10-20 00:44:47,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:44:47,385 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 00:44:47,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 00:44:47,418 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:44:47,418 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:44:47,418 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:44:47,419 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:44:47,419 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:44:47,419 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:44:47,419 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:44:47,419 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:44:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 00:44:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:44:47,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:47,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:47,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:47,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1819222424, now seen corresponding path program 1 times [2020-10-20 00:44:47,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:47,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439029832] [2020-10-20 00:44:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:47,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439029832] [2020-10-20 00:44:47,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:47,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:44:47,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404539036] [2020-10-20 00:44:47,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:44:47,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:47,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:44:47,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:44:47,634 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-10-20 00:44:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:47,654 INFO L93 Difference]: Finished difference Result 62 states and 99 transitions. [2020-10-20 00:44:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:44:47,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:44:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:47,666 INFO L225 Difference]: With dead ends: 62 [2020-10-20 00:44:47,667 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 00:44:47,671 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 [2020-10-20 00:44:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 00:44:47,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-20 00:44:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 00:44:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-20 00:44:47,720 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2020-10-20 00:44:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:47,721 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-20 00:44:47,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:44:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-20 00:44:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:44:47,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:47,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:47,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:44:47,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:47,723 INFO L82 PathProgramCache]: Analyzing trace with hash 177875533, now seen corresponding path program 1 times [2020-10-20 00:44:47,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:47,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659511244] [2020-10-20 00:44:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:47,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659511244] [2020-10-20 00:44:47,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:47,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:44:47,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729156326] [2020-10-20 00:44:47,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:44:47,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:47,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:44:47,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:44:47,809 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2020-10-20 00:44:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:47,883 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-20 00:44:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:44:47,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 00:44:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:47,885 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:44:47,885 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:44:47,886 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 [2020-10-20 00:44:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:44:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-10-20 00:44:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 00:44:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-20 00:44:47,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2020-10-20 00:44:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:47,893 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-20 00:44:47,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:44:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-20 00:44:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:44:47,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:47,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:47,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:44:47,895 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:47,895 INFO L82 PathProgramCache]: Analyzing trace with hash -574954344, now seen corresponding path program 1 times [2020-10-20 00:44:47,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:47,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746219291] [2020-10-20 00:44:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:48,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746219291] [2020-10-20 00:44:48,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:48,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:44:48,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637639418] [2020-10-20 00:44:48,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:44:48,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:44:48,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:44:48,022 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 5 states. [2020-10-20 00:44:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:48,172 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-20 00:44:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:44:48,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 00:44:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:48,174 INFO L225 Difference]: With dead ends: 52 [2020-10-20 00:44:48,174 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 00:44:48,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:44:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 00:44:48,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-10-20 00:44:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:44:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-20 00:44:48,183 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2020-10-20 00:44:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:48,183 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-20 00:44:48,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:44:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-20 00:44:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:44:48,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:48,185 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:48,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:44:48,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994638, now seen corresponding path program 1 times [2020-10-20 00:44:48,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:48,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393670758] [2020-10-20 00:44:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:48,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393670758] [2020-10-20 00:44:48,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690734546] [2020-10-20 00:44:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:44:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:48,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-20 00:44:48,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:44:48,797 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 00:44:48,797 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:48,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:48,819 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 00:44:48,820 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:48,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:48,832 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:44:48,832 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-10-20 00:44:49,114 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,115 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-20 00:44:49,116 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,215 INFO L625 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-10-20 00:44:49,226 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:44:49,276 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:44:49,290 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 20 [2020-10-20 00:44:49,291 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,316 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:44:49,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:44:49,329 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2020-10-20 00:44:49,330 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,350 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:44:49,355 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,374 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,374 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-10-20 00:44:49,525 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,526 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-10-20 00:44:49,527 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,593 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|, |v_#memory_int_32|, |v_#memory_int_33|, |v_#memory_$Pointer$.base_23|], 4=[|v_#memory_int_35|]} [2020-10-20 00:44:49,606 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:44:49,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,669 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:44:49,717 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,721 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 00:44:49,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:44:49,786 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,812 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:44:49,877 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-10-20 00:44:49,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-10-20 00:44:49,879 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:49,943 INFO L625 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2020-10-20 00:44:49,966 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-20 00:44:49,966 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:43 [2020-10-20 00:44:50,125 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2020-10-20 00:44:50,127 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:44:50,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:44:50,156 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:44:50,157 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-10-20 00:44:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:50,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:44:50,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-20 00:44:50,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203717019] [2020-10-20 00:44:50,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 00:44:50,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:50,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 00:44:50,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-20 00:44:50,163 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 11 states. [2020-10-20 00:44:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:50,942 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-20 00:44:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 00:44:50,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-20 00:44:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:50,946 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:44:50,946 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 00:44:50,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-20 00:44:50,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 00:44:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 20. [2020-10-20 00:44:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 00:44:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-20 00:44:50,956 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-10-20 00:44:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:50,956 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-20 00:44:50,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 00:44:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-20 00:44:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:44:50,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:50,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:51,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:44:51,173 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1796257513, now seen corresponding path program 1 times [2020-10-20 00:44:51,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:51,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641504818] [2020-10-20 00:44:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:44:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:44:51,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641504818] [2020-10-20 00:44:51,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:44:51,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:44:51,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077133252] [2020-10-20 00:44:51,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:44:51,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:44:51,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:44:51,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:44:51,312 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-20 00:44:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:44:51,451 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-20 00:44:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:44:51,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 00:44:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:44:51,453 INFO L225 Difference]: With dead ends: 38 [2020-10-20 00:44:51,453 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 00:44:51,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:44:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 00:44:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-10-20 00:44:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 00:44:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-20 00:44:51,458 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 16 [2020-10-20 00:44:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:44:51,458 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-20 00:44:51,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:44:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-20 00:44:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:44:51,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:44:51,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:44:51,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 00:44:51,459 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:44:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:44:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1798104555, now seen corresponding path program 1 times [2020-10-20 00:44:51,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:44:51,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125965562] [2020-10-20 00:44:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:44:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:44:51,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:44:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:44:51,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:44:51,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:44:51,500 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:44:51,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 00:44:51,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:44:51 BoogieIcfgContainer [2020-10-20 00:44:51,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:44:51,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:44:51,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:44:51,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:44:51,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:44:47" (3/4) ... [2020-10-20 00:44:51,534 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:44:51,583 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:44:51,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:44:51,588 INFO L168 Benchmark]: Toolchain (without parser) took 5628.70 ms. Allocated memory was 40.9 MB in the beginning and 65.5 MB in the end (delta: 24.6 MB). Free memory was 17.7 MB in the beginning and 33.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,588 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.6 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.95 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 16.9 MB in the beginning and 20.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.89 ms. Allocated memory is still 43.0 MB. Free memory was 20.3 MB in the beginning and 18.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,590 INFO L168 Benchmark]: Boogie Preprocessor took 37.91 ms. Allocated memory is still 43.0 MB. Free memory was 18.2 MB in the beginning and 16.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,595 INFO L168 Benchmark]: RCFGBuilder took 564.34 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 16.1 MB in the beginning and 26.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,596 INFO L168 Benchmark]: TraceAbstraction took 4175.84 ms. Allocated memory was 45.6 MB in the beginning and 65.5 MB in the end (delta: 19.9 MB). Free memory was 26.0 MB in the beginning and 35.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,597 INFO L168 Benchmark]: Witness Printer took 52.33 ms. Allocated memory is still 65.5 MB. Free memory was 35.7 MB in the beginning and 33.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:44:51,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.6 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 693.95 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 16.9 MB in the beginning and 20.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 92.89 ms. Allocated memory is still 43.0 MB. Free memory was 20.3 MB in the beginning and 18.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.91 ms. Allocated memory is still 43.0 MB. Free memory was 18.2 MB in the beginning and 16.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 564.34 ms. Allocated memory was 43.0 MB in the beginning and 45.6 MB in the end (delta: 2.6 MB). Free memory was 16.1 MB in the beginning and 26.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4175.84 ms. Allocated memory was 45.6 MB in the beginning and 65.5 MB in the end (delta: 19.9 MB). Free memory was 26.0 MB in the beginning and 35.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * Witness Printer took 52.33 ms. Allocated memory is still 65.5 MB. Free memory was 35.7 MB in the beginning and 33.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 991]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end [L1045] EXPR end->colour [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next [L1051] COND TRUE !(end->next) [L991] COND FALSE !(0) [L991] __assert_fail ("0", "dll-rb-cnstr_1-2.c", 11, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 165 SDslu, 223 SDs, 0 SdLazy, 213 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 7783 SizeOfPredicates, 14 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 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...