./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/parity.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/bitvector/parity.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 1296f658f5f284102ff72d10b015c6c25ce34cb8 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/bitvector/parity.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 1296f658f5f284102ff72d10b015c6c25ce34cb8 ................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:09,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:21:09,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:21:09,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:21:09,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:21:09,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:21:09,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:21:09,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:21:09,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:21:09,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:21:09,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:21:09,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:21:09,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:21:09,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:21:09,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:21:09,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:21:09,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:21:09,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:21:09,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:21:09,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:21:09,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:21:09,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:21:09,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:21:09,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:21:09,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:21:09,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:21:09,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:21:09,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:21:09,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:21:09,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:21:09,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:09,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:09,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:09,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:09,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:09,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:09,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:09,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:09,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:09,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:09,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:09,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:21:09,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:09,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:09,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:09,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:09,732 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:09,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:09,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:09,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:21:09,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:09,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:09,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:09,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:09,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:09,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:09,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:09,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:09,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:09,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:09,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:09,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:09,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:09,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:09,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:09,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:09,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:09,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:21:09,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:21:09,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:09,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:09,739 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 -> 1296f658f5f284102ff72d10b015c6c25ce34cb8 [2020-10-19 22:21:09,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:09,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:09,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:09,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:09,978 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:09,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/parity.i [2020-10-19 22:21:10,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cdc83f12/ee1ee2d564ac4e02bd2436f411adb8a2/FLAG3f24fdb0a [2020-10-19 22:21:10,458 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:10,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/parity.i [2020-10-19 22:21:10,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cdc83f12/ee1ee2d564ac4e02bd2436f411adb8a2/FLAG3f24fdb0a [2020-10-19 22:21:10,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cdc83f12/ee1ee2d564ac4e02bd2436f411adb8a2 [2020-10-19 22:21:10,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:10,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:10,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:10,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:10,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:10,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:10" (1/1) ... [2020-10-19 22:21:10,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b82c98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:10, skipping insertion in model container [2020-10-19 22:21:10,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:10" (1/1) ... [2020-10-19 22:21:10,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:10,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:11,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:11,066 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:11,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:11,104 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:11,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11 WrapperNode [2020-10-19 22:21:11,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:11,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:11,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:11,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:11,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:11,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:11,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:11,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:11,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (1/1) ... [2020-10-19 22:21:11,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:11,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:11,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:11,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:11,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (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 [2020-10-19 22:21:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:21:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:11,443 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:11,444 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:11,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:11 BoogieIcfgContainer [2020-10-19 22:21:11,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:11,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:11,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:11,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:11,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:10" (1/3) ... [2020-10-19 22:21:11,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32527abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:11, skipping insertion in model container [2020-10-19 22:21:11,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:11" (2/3) ... [2020-10-19 22:21:11,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32527abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:11, skipping insertion in model container [2020-10-19 22:21:11,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:11" (3/3) ... [2020-10-19 22:21:11,456 INFO L111 eAbstractionObserver]: Analyzing ICFG parity.i [2020-10-19 22:21:11,470 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:11,478 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:11,495 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:11,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:11,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:11,528 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:11,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:11,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:11,529 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:11,529 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:11,529 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-19 22:21:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:21:11,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:11,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:11,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1826682036, now seen corresponding path program 1 times [2020-10-19 22:21:11,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:11,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586489273] [2020-10-19 22:21:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:11,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586489273] [2020-10-19 22:21:11,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:11,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:21:11,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146522345] [2020-10-19 22:21:11,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:21:11,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:11,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:21:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:21:11,741 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-19 22:21:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:11,757 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2020-10-19 22:21:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:21:11,758 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-19 22:21:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:11,767 INFO L225 Difference]: With dead ends: 30 [2020-10-19 22:21:11,768 INFO L226 Difference]: Without dead ends: 13 [2020-10-19 22:21:11,771 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 [2020-10-19 22:21:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-19 22:21:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-19 22:21:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 22:21:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-10-19 22:21:11,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2020-10-19 22:21:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:11,805 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-10-19 22:21:11,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:21:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-10-19 22:21:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:21:11,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:11,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:11,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:21:11,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash 477240759, now seen corresponding path program 1 times [2020-10-19 22:21:11,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:11,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875759205] [2020-10-19 22:21:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:11,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875759205] [2020-10-19 22:21:11,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:11,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:21:11,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194551397] [2020-10-19 22:21:11,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:21:11,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:21:11,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:21:11,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:21:11,910 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 5 states. [2020-10-19 22:21:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:11,972 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-19 22:21:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:21:11,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-19 22:21:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:11,974 INFO L225 Difference]: With dead ends: 37 [2020-10-19 22:21:11,974 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 22:21:11,975 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 [2020-10-19 22:21:11,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 22:21:11,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-10-19 22:21:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 22:21:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-19 22:21:11,981 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2020-10-19 22:21:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:11,981 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-19 22:21:11,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:21:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-19 22:21:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:21:11,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:11,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:11,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:21:11,983 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:11,984 INFO L82 PathProgramCache]: Analyzing trace with hash 534499061, now seen corresponding path program 1 times [2020-10-19 22:21:11,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:21:11,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429482171] [2020-10-19 22:21:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:21:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:12,011 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:21:12,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:21:12,050 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:21:12,051 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:12,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:21:12,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:12 BoogieIcfgContainer [2020-10-19 22:21:12,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:12,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:12,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:12,078 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:12,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:11" (3/4) ... [2020-10-19 22:21:12,082 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:21:12,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:12,086 INFO L168 Benchmark]: Toolchain (without parser) took 1306.52 ms. Allocated memory was 35.1 MB in the beginning and 47.2 MB in the end (delta: 12.1 MB). Free memory was 12.7 MB in the beginning and 12.4 MB in the end (delta: 335.7 kB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,087 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 28.4 kB). Peak memory consumption was 28.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.91 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.9 MB in the beginning and 23.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.57 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 22.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,090 INFO L168 Benchmark]: Boogie Preprocessor took 21.35 ms. Allocated memory is still 44.0 MB. Free memory was 22.0 MB in the beginning and 20.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,092 INFO L168 Benchmark]: RCFGBuilder took 282.50 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 20.6 MB in the beginning and 19.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,095 INFO L168 Benchmark]: TraceAbstraction took 629.45 ms. Allocated memory was 45.6 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). Free memory was 18.7 MB in the beginning and 12.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,098 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 47.2 MB. Free memory was 12.7 MB in the beginning and 12.4 MB in the end (delta: 284.9 kB). Peak memory consumption was 284.9 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:12,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.3 MB in the end (delta: 28.4 kB). Peak memory consumption was 28.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 320.91 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 11.9 MB in the beginning and 23.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.57 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 22.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.35 ms. Allocated memory is still 44.0 MB. Free memory was 22.0 MB in the beginning and 20.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 282.50 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 20.6 MB in the beginning and 19.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 629.45 ms. Allocated memory was 45.6 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). Free memory was 18.7 MB in the beginning and 12.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Witness Printer took 5.41 ms. Allocated memory is still 47.2 MB. Free memory was 12.7 MB in the beginning and 12.4 MB in the end (delta: 284.9 kB). Peak memory consumption was 284.9 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 54, overapproximation of bitwiseXor at line 51. Possible FailurePath: [L34] unsigned int v = __VERIFIER_nondet_uint(); [L35] unsigned int v1; [L36] unsigned int v2; [L37] char parity1; [L38] char parity2; [L39] v1 = v [L40] parity1 = (char)0 [L41] COND FALSE !(v1 != 0) [L49] v2 = v [L50] parity2 = (char)0 [L51] v2 = v2 ^ (v2 >> 1u) [L52] v2 = v2 ^ (v2 >> 2u) [L53] v2 = (v2 & 286331153U) * 286331153U [L54] COND FALSE !(((v2 >> 28u) & 1u) == 0) [L57] parity2 = (char)1 [L16] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "parity.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 11 SDslu, 33 SDs, 0 SdLazy, 14 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:21:14,177 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-19 22:21:14,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:21:14,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:21:14,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:21:14,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:21:14,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:21:14,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:21:14,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:21:14,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:21:14,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:21:14,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:21:14,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:21:14,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:21:14,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:21:14,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:21:14,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:21:14,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:21:14,329 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:21:14,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:21:14,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:21:14,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:21:14,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:21:14,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:21:14,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:21:14,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:21:14,331 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:21:14,332 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:21:14,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:21:14,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:21:14,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:21:14,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:21:14,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:21:14,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:21:14,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:21:14,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:21:14,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:21:14,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:21:14,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:21:14,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:21:14,335 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:21:14,336 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:21:14,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:21:14,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:21:14,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:21:14,336 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 1296f658f5f284102ff72d10b015c6c25ce34cb8 [2020-10-19 22:21:14,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:21:14,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:21:14,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:21:14,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:21:14,557 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:21:14,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/parity.i [2020-10-19 22:21:14,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5c89a0e/dea1c69807a0454aaa284ca9a3d9f46c/FLAG83e481bfe [2020-10-19 22:21:15,059 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:21:15,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/parity.i [2020-10-19 22:21:15,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5c89a0e/dea1c69807a0454aaa284ca9a3d9f46c/FLAG83e481bfe [2020-10-19 22:21:15,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5c89a0e/dea1c69807a0454aaa284ca9a3d9f46c [2020-10-19 22:21:15,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:21:15,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:21:15,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:15,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:21:15,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:21:15,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:15,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651199fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15, skipping insertion in model container [2020-10-19 22:21:15,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:15,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:21:15,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:21:15,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:15,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:21:15,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:21:15,954 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:21:15,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15 WrapperNode [2020-10-19 22:21:15,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:21:15,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:15,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:21:15,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:21:15,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:15,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:21:16,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:21:16,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:21:16,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:21:16,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (1/1) ... [2020-10-19 22:21:16,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:21:16,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:21:16,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:21:16,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:21:16,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (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 [2020-10-19 22:21:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:21:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:21:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:21:16,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:21:16,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:21:16,390 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:21:16,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:16 BoogieIcfgContainer [2020-10-19 22:21:16,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:21:16,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:21:16,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:21:16,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:21:16,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:21:15" (1/3) ... [2020-10-19 22:21:16,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d47392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:16, skipping insertion in model container [2020-10-19 22:21:16,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:21:15" (2/3) ... [2020-10-19 22:21:16,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d47392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:21:16, skipping insertion in model container [2020-10-19 22:21:16,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:16" (3/3) ... [2020-10-19 22:21:16,403 INFO L111 eAbstractionObserver]: Analyzing ICFG parity.i [2020-10-19 22:21:16,416 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:21:16,425 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:21:16,443 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:21:16,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:21:16,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:21:16,472 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:21:16,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:21:16,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:21:16,473 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:21:16,473 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:21:16,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:21:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-19 22:21:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:21:16,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:16,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:16,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1826682036, now seen corresponding path program 1 times [2020-10-19 22:21:16,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:16,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621170958] [2020-10-19 22:21:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:16,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-19 22:21:16,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:16,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:16,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621170958] [2020-10-19 22:21:16,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:16,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 22:21:16,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756639158] [2020-10-19 22:21:16,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 22:21:16,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:16,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 22:21:16,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:21:16,670 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-19 22:21:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:16,686 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2020-10-19 22:21:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 22:21:16,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-19 22:21:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:16,695 INFO L225 Difference]: With dead ends: 30 [2020-10-19 22:21:16,695 INFO L226 Difference]: Without dead ends: 13 [2020-10-19 22:21:16,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 22:21:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-19 22:21:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-19 22:21:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 22:21:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-10-19 22:21:16,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2020-10-19 22:21:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:16,725 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-10-19 22:21:16,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 22:21:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-10-19 22:21:16,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:21:16,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:16,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:16,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:21:16,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash 477240759, now seen corresponding path program 1 times [2020-10-19 22:21:16,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:16,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515925166] [2020-10-19 22:21:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:16,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:21:16,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:17,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:17,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515925166] [2020-10-19 22:21:17,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:17,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-19 22:21:17,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763057837] [2020-10-19 22:21:17,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:21:17,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:17,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:21:17,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:21:17,097 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 7 states. [2020-10-19 22:21:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:17,189 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-19 22:21:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:21:17,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-19 22:21:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:17,191 INFO L225 Difference]: With dead ends: 37 [2020-10-19 22:21:17,191 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 22:21:17,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:21:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 22:21:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-10-19 22:21:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 22:21:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-19 22:21:17,198 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2020-10-19 22:21:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:17,199 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-19 22:21:17,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:21:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-19 22:21:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 22:21:17,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:17,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:17,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:21:17,412 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:17,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash 534499061, now seen corresponding path program 1 times [2020-10-19 22:21:17,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:17,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711525584] [2020-10-19 22:21:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:17,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:21:17,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:17,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:21:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:21:17,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711525584] [2020-10-19 22:21:17,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:17,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-19 22:21:17,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132068917] [2020-10-19 22:21:17,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:21:17,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:21:17,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:21:17,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:21:17,679 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 8 states. [2020-10-19 22:21:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:21:17,789 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-10-19 22:21:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:21:17,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-19 22:21:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:21:17,791 INFO L225 Difference]: With dead ends: 35 [2020-10-19 22:21:17,791 INFO L226 Difference]: Without dead ends: 27 [2020-10-19 22:21:17,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:21:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-19 22:21:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2020-10-19 22:21:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-19 22:21:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-10-19 22:21:17,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2020-10-19 22:21:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:21:17,797 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-19 22:21:17,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:21:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-10-19 22:21:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 22:21:17,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:21:17,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:21:18,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:21:18,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:21:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:21:18,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2129481056, now seen corresponding path program 1 times [2020-10-19 22:21:18,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:21:18,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013815099] [2020-10-19 22:21:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 22:21:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:18,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:21:18,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:18,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013815099] [2020-10-19 22:21:18,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:18,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1922956111] [2020-10-19 22:21:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:21:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:18,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:21:18,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:18,235 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:18,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598250257] [2020-10-19 22:21:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:21:18,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:21:18,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:21:18,305 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:21:18,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:21:18,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 22:21:18,307 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 22:21:18,307 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:21:18,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:21:18,929 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 22:21:18,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:21:18 BoogieIcfgContainer [2020-10-19 22:21:18,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:21:18,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:21:18,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:21:18,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:21:18,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:21:16" (3/4) ... [2020-10-19 22:21:18,936 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:21:18,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:21:18,939 INFO L168 Benchmark]: Toolchain (without parser) took 3479.70 ms. Allocated memory was 34.6 MB in the beginning and 48.2 MB in the end (delta: 13.6 MB). Free memory was 15.3 MB in the beginning and 13.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,941 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 33.0 MB. Free memory was 9.4 MB in the beginning and 9.3 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.30 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 14.4 MB in the beginning and 24.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.54 ms. Allocated memory is still 43.5 MB. Free memory was 24.0 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,951 INFO L168 Benchmark]: Boogie Preprocessor took 52.25 ms. Allocated memory is still 43.5 MB. Free memory was 22.3 MB in the beginning and 21.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,954 INFO L168 Benchmark]: RCFGBuilder took 334.25 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 21.0 MB in the beginning and 20.6 MB in the end (delta: 364.7 kB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,955 INFO L168 Benchmark]: TraceAbstraction took 2535.96 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 20.1 MB in the beginning and 13.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,956 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 48.2 MB. Free memory was 13.5 MB in the beginning and 13.1 MB in the end (delta: 372.1 kB). Peak memory consumption was 372.1 kB. Max. memory is 14.3 GB. [2020-10-19 22:21:18,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 33.0 MB. Free memory was 9.4 MB in the beginning and 9.3 MB in the end (delta: 45.4 kB). Peak memory consumption was 45.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 490.30 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 14.4 MB in the beginning and 24.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.54 ms. Allocated memory is still 43.5 MB. Free memory was 24.0 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 52.25 ms. Allocated memory is still 43.5 MB. Free memory was 22.3 MB in the beginning and 21.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 334.25 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 21.0 MB in the beginning and 20.6 MB in the end (delta: 364.7 kB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2535.96 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 20.1 MB in the beginning and 13.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.43 ms. Allocated memory is still 48.2 MB. Free memory was 13.5 MB in the beginning and 13.1 MB in the end (delta: 372.1 kB). Peak memory consumption was 372.1 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34] unsigned int v = __VERIFIER_nondet_uint(); [L35] unsigned int v1; [L36] unsigned int v2; [L37] char parity1; [L38] char parity2; [L39] v1 = v [L40] parity1 = (char)0 [L41] COND TRUE v1 != 0 [L42] COND TRUE parity1 == (char)0 [L43] parity1 = (char)1 [L47] v1 = v1 & (v1 - 1U) [L41] COND FALSE !(v1 != 0) [L49] v2 = v [L50] parity2 = (char)0 [L51] v2 = v2 ^ (v2 >> 1u) [L52] v2 = v2 ^ (v2 >> 2u) [L53] v2 = (v2 & 286331153U) * 286331153U [L54] COND TRUE ((v2 >> 28u) & 1u) == 0 [L55] parity2 = (char)0 [L16] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "parity.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 22 SDslu, 93 SDs, 0 SdLazy, 52 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1296 SizeOfPredicates, 7 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...