./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/dll-sorted-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-sorted-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 804eb6c71849995a146523396e6c0077d176b15b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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/forester-heap/dll-sorted-2.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 804eb6c71849995a146523396e6c0077d176b15b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:45:45,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:45:45,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:45:45,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:45:45,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:45:45,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:45:45,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:45:45,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:45:45,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:45:45,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:45:45,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:45:45,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:45:45,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:45:45,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:45:45,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:45:45,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:45:45,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:45:45,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:45:45,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:45:45,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:45:45,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:45:45,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:45:45,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:45:45,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:45:45,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:45:45,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:45:45,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:45:45,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:45:45,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:45:45,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:45:45,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:45:45,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:45:45,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:45:45,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:45:45,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:45:45,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:45:45,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:45:45,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:45:45,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:45:45,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:45:45,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:45:45,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:45:45,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:45:45,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:45:45,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:45:45,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:45:45,802 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:45:45,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:45:45,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:45:45,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:45:45,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:45:45,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:45:45,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:45:45,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:45:45,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:45:45,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:45:45,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:45:45,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:45:45,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:45:45,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:45:45,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:45:45,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:45:45,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:45:45,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:45:45,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:45:45,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:45:45,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:45:45,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:45:45,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:45:45,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:45:45,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:45:45,811 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 -> 804eb6c71849995a146523396e6c0077d176b15b [2020-10-20 00:45:46,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:45:46,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:45:46,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:45:46,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:45:46,040 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:45:46,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2020-10-20 00:45:46,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a085cfb/5ca3b9a953804285ba79d6b9ca195a3c/FLAG78cf22746 [2020-10-20 00:45:46,601 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:45:46,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2020-10-20 00:45:46,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a085cfb/5ca3b9a953804285ba79d6b9ca195a3c/FLAG78cf22746 [2020-10-20 00:45:46,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a085cfb/5ca3b9a953804285ba79d6b9ca195a3c [2020-10-20 00:45:46,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:45:46,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:45:46,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:45:46,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:45:46,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:45:46,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:45:46" (1/1) ... [2020-10-20 00:45:46,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c26f8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:46, skipping insertion in model container [2020-10-20 00:45:46,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:45:46" (1/1) ... [2020-10-20 00:45:46,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:45:46,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:45:47,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:45:47,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:45:47,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:45:47,586 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:45:47,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47 WrapperNode [2020-10-20 00:45:47,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:45:47,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:45:47,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:45:47,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:45:47,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:45:47,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:45:47,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:45:47,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:45:47,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (1/1) ... [2020-10-20 00:45:47,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:45:47,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:45:47,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:45:47,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:45:47,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (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 00:45:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:45:47,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:45:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 00:45:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 00:45:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:45:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 00:45:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:45:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:45:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:45:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:45:48,367 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:45:48,368 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-20 00:45:48,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:45:48 BoogieIcfgContainer [2020-10-20 00:45:48,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:45:48,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:45:48,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:45:48,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:45:48,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:45:46" (1/3) ... [2020-10-20 00:45:48,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea17a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:45:48, skipping insertion in model container [2020-10-20 00:45:48,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:47" (2/3) ... [2020-10-20 00:45:48,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea17a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:45:48, skipping insertion in model container [2020-10-20 00:45:48,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:45:48" (3/3) ... [2020-10-20 00:45:48,380 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2020-10-20 00:45:48,392 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:45:48,400 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 00:45:48,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 00:45:48,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:45:48,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:45:48,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:45:48,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:45:48,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:45:48,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:45:48,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:45:48,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:45:48,463 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-20 00:45:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:45:48,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:48,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:48,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:48,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:48,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1824948254, now seen corresponding path program 1 times [2020-10-20 00:45:48,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:48,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496596579] [2020-10-20 00:45:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:48,641 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 00:45:48,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496596579] [2020-10-20 00:45:48,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:45:48,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:45:48,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387476240] [2020-10-20 00:45:48,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:45:48,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:48,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:45:48,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:45:48,664 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2020-10-20 00:45:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:48,691 INFO L93 Difference]: Finished difference Result 124 states and 202 transitions. [2020-10-20 00:45:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:45:48,692 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:45:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:48,703 INFO L225 Difference]: With dead ends: 124 [2020-10-20 00:45:48,703 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 00:45:48,708 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 00:45:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 00:45:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-20 00:45:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 00:45:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-20 00:45:48,764 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 7 [2020-10-20 00:45:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:48,765 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-20 00:45:48,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:45:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-20 00:45:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:45:48,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:48,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:48,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:45:48,766 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:48,767 INFO L82 PathProgramCache]: Analyzing trace with hash 178060237, now seen corresponding path program 1 times [2020-10-20 00:45:48,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:48,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577455832] [2020-10-20 00:45:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:48,832 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 00:45:48,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577455832] [2020-10-20 00:45:48,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:45:48,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:45:48,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539405486] [2020-10-20 00:45:48,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:45:48,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:45:48,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:45:48,836 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 3 states. [2020-10-20 00:45:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:48,905 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2020-10-20 00:45:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:45:48,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 00:45:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:48,907 INFO L225 Difference]: With dead ends: 115 [2020-10-20 00:45:48,907 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 00:45:48,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:45:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 00:45:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-20 00:45:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 00:45:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-20 00:45:48,918 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 8 [2020-10-20 00:45:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-20 00:45:48,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:45:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-20 00:45:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 00:45:48,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:48,920 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:48,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:45:48,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:48,921 INFO L82 PathProgramCache]: Analyzing trace with hash 858016664, now seen corresponding path program 1 times [2020-10-20 00:45:48,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:48,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034098432] [2020-10-20 00:45:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:45:49,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034098432] [2020-10-20 00:45:49,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:45:49,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:45:49,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335954836] [2020-10-20 00:45:49,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:45:49,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:49,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:45:49,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:45:49,044 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 4 states. [2020-10-20 00:45:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:49,197 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-20 00:45:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:45:49,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 00:45:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:49,199 INFO L225 Difference]: With dead ends: 97 [2020-10-20 00:45:49,199 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 00:45:49,200 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 00:45:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 00:45:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 57. [2020-10-20 00:45:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 00:45:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-20 00:45:49,210 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 12 [2020-10-20 00:45:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:49,211 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-20 00:45:49,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:45:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-20 00:45:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 00:45:49,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:49,212 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:49,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:45:49,213 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:49,214 INFO L82 PathProgramCache]: Analyzing trace with hash 469748449, now seen corresponding path program 1 times [2020-10-20 00:45:49,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:49,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944730683] [2020-10-20 00:45:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:45:49,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944730683] [2020-10-20 00:45:49,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:45:49,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 00:45:49,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114886113] [2020-10-20 00:45:49,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 00:45:49,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:49,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 00:45:49,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:45:49,315 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 5 states. [2020-10-20 00:45:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:49,485 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2020-10-20 00:45:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:45:49,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-20 00:45:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:49,487 INFO L225 Difference]: With dead ends: 103 [2020-10-20 00:45:49,487 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 00:45:49,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:45:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 00:45:49,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-20 00:45:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 00:45:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-10-20 00:45:49,495 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 22 [2020-10-20 00:45:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:49,495 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-10-20 00:45:49,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 00:45:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-10-20 00:45:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 00:45:49,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:49,497 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:49,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:45:49,497 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:49,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:49,498 INFO L82 PathProgramCache]: Analyzing trace with hash -210309921, now seen corresponding path program 1 times [2020-10-20 00:45:49,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:49,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19360943] [2020-10-20 00:45:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:49,891 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 00:45:49,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19360943] [2020-10-20 00:45:49,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733982790] [2020-10-20 00:45:49,892 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 00:45:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:49,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-20 00:45:50,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:45:50,077 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 00:45:50,078 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,089 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,089 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,090 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 00:45:50,225 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:45:50,226 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:50,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:50,306 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,307 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 51 [2020-10-20 00:45:50,308 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,396 INFO L625 ElimStorePlain]: treesize reduction 24, result has 84.1 percent of original size [2020-10-20 00:45:50,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:50,421 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,421 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2020-10-20 00:45:50,422 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,468 INFO L625 ElimStorePlain]: treesize reduction 22, result has 72.2 percent of original size [2020-10-20 00:45:50,470 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,471 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:203, output treesize:51 [2020-10-20 00:45:50,517 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_38|], 12=[|v_#memory_$Pointer$.base_33|, |v_#memory_$Pointer$.offset_33|]} [2020-10-20 00:45:50,524 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2020-10-20 00:45:50,524 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,551 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,646 INFO L350 Elim1Store]: treesize reduction 158, result has 33.1 percent of original size [2020-10-20 00:45:50,646 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 168 treesize of output 178 [2020-10-20 00:45:50,659 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-10-20 00:45:50,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-10-20 00:45:50,661 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,704 INFO L625 ElimStorePlain]: treesize reduction 40, result has 76.3 percent of original size [2020-10-20 00:45:50,735 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,736 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 121 treesize of output 175 [2020-10-20 00:45:50,740 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,779 INFO L625 ElimStorePlain]: treesize reduction 140, result has 39.1 percent of original size [2020-10-20 00:45:50,780 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,780 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:176, output treesize:90 [2020-10-20 00:45:50,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:50,908 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,909 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 88 [2020-10-20 00:45:50,911 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,936 INFO L625 ElimStorePlain]: treesize reduction 16, result has 75.4 percent of original size [2020-10-20 00:45:50,943 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,944 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2020-10-20 00:45:50,945 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,959 INFO L625 ElimStorePlain]: treesize reduction 10, result has 58.3 percent of original size [2020-10-20 00:45:50,961 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,961 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:104, output treesize:9 [2020-10-20 00:45:50,967 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 00:45:50,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:50,970 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:50,971 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-20 00:45:50,977 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 00:45:50,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:45:50,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2020-10-20 00:45:50,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26890663] [2020-10-20 00:45:50,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 00:45:50,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 00:45:50,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:45:50,979 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 13 states. [2020-10-20 00:45:51,656 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-20 00:45:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:52,261 INFO L93 Difference]: Finished difference Result 134 states and 171 transitions. [2020-10-20 00:45:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 00:45:52,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-20 00:45:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:52,265 INFO L225 Difference]: With dead ends: 134 [2020-10-20 00:45:52,266 INFO L226 Difference]: Without dead ends: 131 [2020-10-20 00:45:52,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-20 00:45:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-20 00:45:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 79. [2020-10-20 00:45:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 00:45:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-20 00:45:52,278 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 22 [2020-10-20 00:45:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:52,278 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-20 00:45:52,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 00:45:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-20 00:45:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 00:45:52,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:52,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:52,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:45:52,497 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:52,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1974438670, now seen corresponding path program 1 times [2020-10-20 00:45:52,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:52,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105709128] [2020-10-20 00:45:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:45:52,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105709128] [2020-10-20 00:45:52,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:45:52,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:45:52,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857882893] [2020-10-20 00:45:52,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:45:52,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:52,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:45:52,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:45:52,535 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 3 states. [2020-10-20 00:45:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:52,550 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2020-10-20 00:45:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:45:52,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-20 00:45:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:52,551 INFO L225 Difference]: With dead ends: 126 [2020-10-20 00:45:52,552 INFO L226 Difference]: Without dead ends: 79 [2020-10-20 00:45:52,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:45:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-20 00:45:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-20 00:45:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 00:45:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-20 00:45:52,561 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 25 [2020-10-20 00:45:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:52,562 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-20 00:45:52,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:45:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-20 00:45:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 00:45:52,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:52,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:52,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 00:45:52,564 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:52,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2062363188, now seen corresponding path program 1 times [2020-10-20 00:45:52,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:52,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959704996] [2020-10-20 00:45:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:45:52,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959704996] [2020-10-20 00:45:52,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666732414] [2020-10-20 00:45:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:45:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:52,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-20 00:45:52,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:45:52,829 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 00:45:52,830 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:52,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:52,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:52,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:52,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:52,851 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-10-20 00:45:52,851 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:52,860 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:52,861 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 00:45:52,861 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:28 [2020-10-20 00:45:52,920 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:52,921 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 00:45:52,922 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:52,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:52,976 INFO L441 ElimStorePlain]: Different costs {8=[|v_#memory_$Pointer$.base_34|], 26=[|v_#memory_$Pointer$.offset_35|]} [2020-10-20 00:45:52,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:53,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:53,021 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:53,021 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 49 [2020-10-20 00:45:53,022 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,107 INFO L625 ElimStorePlain]: treesize reduction 24, result has 84.9 percent of original size [2020-10-20 00:45:53,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:53,128 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:53,129 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 56 [2020-10-20 00:45:53,137 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,182 INFO L625 ElimStorePlain]: treesize reduction 16, result has 79.5 percent of original size [2020-10-20 00:45:53,184 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,184 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:207, output treesize:59 [2020-10-20 00:45:53,231 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_39|], 6=[|v_#memory_$Pointer$.base_35|], 14=[|v_#memory_$Pointer$.offset_36|]} [2020-10-20 00:45:53,237 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 00:45:53,237 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:53,304 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:53,305 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 118 treesize of output 134 [2020-10-20 00:45:53,309 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-10-20 00:45:53,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-10-20 00:45:53,311 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,364 INFO L625 ElimStorePlain]: treesize reduction 76, result has 58.5 percent of original size [2020-10-20 00:45:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:45:53,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2020-10-20 00:45:53,380 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:45:53,398 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:45:53,398 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:142, output treesize:80 [2020-10-20 00:45:53,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:45:53,496 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-20 00:45:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:45:53,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 00:45:53,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2020-10-20 00:45:53,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708162727] [2020-10-20 00:45:53,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 00:45:53,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:45:53,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 00:45:53,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:45:53,513 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 13 states. [2020-10-20 00:45:54,161 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-20 00:45:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:45:54,507 INFO L93 Difference]: Finished difference Result 166 states and 201 transitions. [2020-10-20 00:45:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 00:45:54,508 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-10-20 00:45:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:45:54,509 INFO L225 Difference]: With dead ends: 166 [2020-10-20 00:45:54,510 INFO L226 Difference]: Without dead ends: 119 [2020-10-20 00:45:54,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-20 00:45:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-20 00:45:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 79. [2020-10-20 00:45:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 00:45:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2020-10-20 00:45:54,519 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 25 [2020-10-20 00:45:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:45:54,519 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2020-10-20 00:45:54,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 00:45:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2020-10-20 00:45:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 00:45:54,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:45:54,520 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:45:54,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:45:54,734 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:45:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:45:54,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1086496170, now seen corresponding path program 1 times [2020-10-20 00:45:54,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:45:54,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5041035] [2020-10-20 00:45:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:45:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:45:54,911 ERROR L253 erpolLogProxyWrapper]: Interpolant 21 not inductive [2020-10-20 00:45:54,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 00:45:54,913 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 00:45:54,932 INFO L168 Benchmark]: Toolchain (without parser) took 8028.91 ms. Allocated memory was 36.7 MB in the beginning and 82.3 MB in the end (delta: 45.6 MB). Free memory was 19.1 MB in the beginning and 8.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,935 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 12.0 MB in the beginning and 11.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.61 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 18.3 MB in the beginning and 29.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.95 ms. Allocated memory is still 46.7 MB. Free memory was 28.8 MB in the beginning and 26.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,943 INFO L168 Benchmark]: Boogie Preprocessor took 40.69 ms. Allocated memory is still 46.7 MB. Free memory was 26.4 MB in the beginning and 24.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,945 INFO L168 Benchmark]: RCFGBuilder took 678.63 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 23.9 MB in the beginning and 27.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,948 INFO L168 Benchmark]: TraceAbstraction took 6546.22 ms. Allocated memory was 48.8 MB in the beginning and 82.3 MB in the end (delta: 33.6 MB). Free memory was 26.7 MB in the beginning and 8.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 51.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:45:54,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 33.6 MB. Free memory was 12.0 MB in the beginning and 11.9 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 690.61 ms. Allocated memory was 36.7 MB in the beginning and 46.7 MB in the end (delta: 10.0 MB). Free memory was 18.3 MB in the beginning and 29.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 60.95 ms. Allocated memory is still 46.7 MB. Free memory was 28.8 MB in the beginning and 26.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 40.69 ms. Allocated memory is still 46.7 MB. Free memory was 26.4 MB in the beginning and 24.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 678.63 ms. Allocated memory was 46.7 MB in the beginning and 48.8 MB in the end (delta: 2.1 MB). Free memory was 23.9 MB in the beginning and 27.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6546.22 ms. Allocated memory was 48.8 MB in the beginning and 82.3 MB in the end (delta: 33.6 MB). Free memory was 26.7 MB in the beginning and 8.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 51.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:45:57,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:45:57,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:45:57,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:45:57,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:45:57,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:45:57,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:45:57,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:45:57,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:45:57,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:45:57,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:45:57,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:45:57,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:45:57,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:45:57,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:45:57,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:45:57,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:45:57,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:45:57,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:45:57,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:45:57,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:45:57,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:45:57,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:45:57,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:45:57,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:45:57,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:45:57,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:45:57,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:45:57,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:45:57,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:45:57,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:45:57,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:45:57,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:45:57,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:45:57,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:45:57,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:45:57,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:45:57,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:45:57,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:45:57,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:45:57,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:45:57,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:45:57,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:45:57,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:45:57,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:45:57,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:45:57,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:45:57,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:45:57,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:45:57,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:45:57,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:45:57,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:45:57,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:45:57,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:45:57,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:45:57,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:45:57,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:45:57,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:45:57,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:45:57,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:45:57,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:45:57,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:45:57,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:45:57,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:45:57,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:45:57,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:45:57,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:45:57,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:45:57,351 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:45:57,351 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:45:57,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:45:57,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:45:57,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:45:57,352 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 -> 804eb6c71849995a146523396e6c0077d176b15b [2020-10-20 00:45:57,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:45:57,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:45:57,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:45:57,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:45:57,570 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:45:57,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2020-10-20 00:45:57,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b5ec2036/c13e3fb31b3348cb9a1d80c614b9580a/FLAGbaecf6ead [2020-10-20 00:45:58,221 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:45:58,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2020-10-20 00:45:58,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b5ec2036/c13e3fb31b3348cb9a1d80c614b9580a/FLAGbaecf6ead [2020-10-20 00:45:58,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b5ec2036/c13e3fb31b3348cb9a1d80c614b9580a [2020-10-20 00:45:58,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:45:58,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:45:58,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:45:58,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:45:58,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:45:58,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:45:58" (1/1) ... [2020-10-20 00:45:58,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14733dba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:58, skipping insertion in model container [2020-10-20 00:45:58,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:45:58" (1/1) ... [2020-10-20 00:45:58,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:45:58,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:45:59,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:45:59,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:45:59,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:45:59,165 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:45:59,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59 WrapperNode [2020-10-20 00:45:59,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:45:59,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:45:59,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:45:59,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:45:59,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:45:59,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:45:59,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:45:59,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:45:59,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (1/1) ... [2020-10-20 00:45:59,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:45:59,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:45:59,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:45:59,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:45:59,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (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 00:45:59,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:45:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 00:45:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 00:45:59,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:45:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 00:45:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:45:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:45:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:45:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:45:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:46:00,167 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:46:00,167 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-20 00:46:00,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:46:00 BoogieIcfgContainer [2020-10-20 00:46:00,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:46:00,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:46:00,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:46:00,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:46:00,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:45:58" (1/3) ... [2020-10-20 00:46:00,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3670b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:46:00, skipping insertion in model container [2020-10-20 00:46:00,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:45:59" (2/3) ... [2020-10-20 00:46:00,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3670b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:46:00, skipping insertion in model container [2020-10-20 00:46:00,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:46:00" (3/3) ... [2020-10-20 00:46:00,181 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2020-10-20 00:46:00,193 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:46:00,201 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 00:46:00,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 00:46:00,241 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:46:00,241 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:46:00,241 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:46:00,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:46:00,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:46:00,242 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:46:00,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:46:00,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:46:00,259 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-20 00:46:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:46:00,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:46:00,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:46:00,265 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:46:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:46:00,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1823993949, now seen corresponding path program 1 times [2020-10-20 00:46:00,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:46:00,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524862483] [2020-10-20 00:46:00,282 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 [2020-10-20 00:46:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:46:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:46:00,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:46:00,441 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 00:46:00,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:46:00,449 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 00:46:00,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524862483] [2020-10-20 00:46:00,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:46:00,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:46:00,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604704638] [2020-10-20 00:46:00,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:46:00,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:46:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:46:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:46:00,480 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 2 states. [2020-10-20 00:46:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:46:00,521 INFO L93 Difference]: Finished difference Result 121 states and 197 transitions. [2020-10-20 00:46:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:46:00,523 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-10-20 00:46:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:46:00,542 INFO L225 Difference]: With dead ends: 121 [2020-10-20 00:46:00,542 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 00:46:00,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 00:46:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 00:46:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-20 00:46:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 00:46:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-10-20 00:46:00,609 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 7 [2020-10-20 00:46:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:46:00,609 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-10-20 00:46:00,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:46:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-10-20 00:46:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:46:00,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:46:00,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:46:00,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:46:00,826 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:46:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:46:00,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1809217613, now seen corresponding path program 1 times [2020-10-20 00:46:00,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:46:00,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769489426] [2020-10-20 00:46:00,831 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 [2020-10-20 00:46:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:46:00,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 00:46:00,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:46:00,943 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 00:46:00,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:46:00,945 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 00:46:00,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769489426] [2020-10-20 00:46:00,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:46:00,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 00:46:00,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145224229] [2020-10-20 00:46:00,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:46:00,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:46:00,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:46:00,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:46:00,950 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 3 states. [2020-10-20 00:46:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:46:01,093 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2020-10-20 00:46:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:46:01,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 00:46:01,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:46:01,095 INFO L225 Difference]: With dead ends: 110 [2020-10-20 00:46:01,096 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 00:46:01,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:46:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 00:46:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-20 00:46:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 00:46:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-20 00:46:01,106 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 7 [2020-10-20 00:46:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:46:01,107 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-20 00:46:01,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:46:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-20 00:46:01,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:46:01,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:46:01,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:46:01,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:46:01,321 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:46:01,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:46:01,323 INFO L82 PathProgramCache]: Analyzing trace with hash 996033154, now seen corresponding path program 1 times [2020-10-20 00:46:01,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:46:01,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247473457] [2020-10-20 00:46:01,325 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 [2020-10-20 00:46:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:46:01,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:46:01,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:46:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:46:01,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:46:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 00:46:01,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247473457] [2020-10-20 00:46:01,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:46:01,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-20 00:46:01,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904940241] [2020-10-20 00:46:01,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:46:01,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:46:01,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:46:01,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:46:01,462 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 4 states. [2020-10-20 00:46:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:46:01,891 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2020-10-20 00:46:01,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:46:01,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 00:46:01,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:46:01,893 INFO L225 Difference]: With dead ends: 93 [2020-10-20 00:46:01,893 INFO L226 Difference]: Without dead ends: 90 [2020-10-20 00:46:01,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 00:46:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-20 00:46:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 54. [2020-10-20 00:46:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 00:46:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-20 00:46:01,904 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2020-10-20 00:46:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:46:01,905 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-20 00:46:01,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:46:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-20 00:46:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 00:46:01,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:46:01,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:46:02,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:46:02,121 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:46:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:46:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash -484128776, now seen corresponding path program 1 times [2020-10-20 00:46:02,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:46:02,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264351947] [2020-10-20 00:46:02,137 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 [2020-10-20 00:46:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:46:02,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 00:46:02,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:46:02,327 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 00:46:02,328 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:02,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:02,345 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:02,345 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-20 00:46:02,508 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:02,509 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-20 00:46:02,510 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:02,763 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-10-20 00:46:02,764 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:02,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:02,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:02,803 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 00:46:02,836 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:02,836 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-10-20 00:46:02,837 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,032 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-10-20 00:46:03,034 INFO L625 ElimStorePlain]: treesize reduction 16, result has 88.4 percent of original size [2020-10-20 00:46:03,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:03,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:03,069 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 00:46:03,086 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,087 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-10-20 00:46:03,088 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,184 INFO L625 ElimStorePlain]: treesize reduction 16, result has 77.8 percent of original size [2020-10-20 00:46:03,186 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,187 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:196, output treesize:53 [2020-10-20 00:46:03,257 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_42|], 6=[|v_#memory_$Pointer$.offset_37|, |v_#memory_$Pointer$.base_37|]} [2020-10-20 00:46:03,275 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 00:46:03,276 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,393 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-20 00:46:03,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,409 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-10-20 00:46:03,412 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,494 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,495 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 75 [2020-10-20 00:46:03,497 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,552 INFO L625 ElimStorePlain]: treesize reduction 24, result has 75.5 percent of original size [2020-10-20 00:46:03,553 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,554 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:136, output treesize:74 [2020-10-20 00:46:03,677 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-10-20 00:46:03,679 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,696 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,723 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,724 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 34 [2020-10-20 00:46:03,726 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,745 INFO L625 ElimStorePlain]: treesize reduction 8, result has 68.0 percent of original size [2020-10-20 00:46:03,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264351947] [2020-10-20 00:46:03,748 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:46:03,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363646492] [2020-10-20 00:46:03,749 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 [2020-10-20 00:46:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:46:03,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 00:46:03,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:46:03,981 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 00:46:03,981 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:03,992 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:03,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-20 00:46:04,100 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:04,101 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-20 00:46:04,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-20 00:46:04,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484108181] [2020-10-20 00:46:04,103 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 [2020-10-20 00:46:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:46:04,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 00:46:04,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:46:04,200 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 00:46:04,201 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:04,208 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:04,208 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:04,209 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 00:46:04,401 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:04,402 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-20 00:46:04,403 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:04,616 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-10-20 00:46:04,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:04,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:04,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:04,645 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 00:46:04,702 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:04,702 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-10-20 00:46:04,703 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:04,887 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-20 00:46:04,887 INFO L625 ElimStorePlain]: treesize reduction 16, result has 88.1 percent of original size [2020-10-20 00:46:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 00:46:04,934 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:04,935 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 49 [2020-10-20 00:46:04,936 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,013 INFO L625 ElimStorePlain]: treesize reduction 24, result has 68.8 percent of original size [2020-10-20 00:46:05,015 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,015 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:193, output treesize:50 [2020-10-20 00:46:05,069 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_43|], 6=[|v_#memory_$Pointer$.offset_40|, |v_#memory_$Pointer$.base_40|]} [2020-10-20 00:46:05,093 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-20 00:46:05,094 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,208 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-20 00:46:05,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:05,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-10-20 00:46:05,218 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,256 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:05,304 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:05,304 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 119 [2020-10-20 00:46:05,308 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-10-20 00:46:05,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-20 00:46:05,314 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-10-20 00:46:05,316 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2020-10-20 00:46:05,404 INFO L625 ElimStorePlain]: treesize reduction 233, result has 23.4 percent of original size [2020-10-20 00:46:05,405 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,405 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:133, output treesize:71 [2020-10-20 00:46:05,548 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-10-20 00:46:05,550 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:05,593 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 00:46:05,593 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2020-10-20 00:46:05,595 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 00:46:05,615 INFO L625 ElimStorePlain]: treesize reduction 12, result has 58.6 percent of original size [2020-10-20 00:46:05,616 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:46:05,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:46:05,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:46:05,617 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:46:05,617 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:46:06,223 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 [2020-10-20 00:46:06,246 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:46:06,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:46:06 BoogieIcfgContainer [2020-10-20 00:46:06,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:46:06,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:46:06,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:46:06,247 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:46:06,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:46:00" (3/4) ... [2020-10-20 00:46:06,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:46:06,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:46:06,254 INFO L168 Benchmark]: Toolchain (without parser) took 7745.88 ms. Allocated memory was 34.6 MB in the beginning and 59.8 MB in the end (delta: 25.2 MB). Free memory was 10.1 MB in the beginning and 19.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,254 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.29 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 9.2 MB in the beginning and 16.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 45.1 MB. Free memory was 16.2 MB in the beginning and 13.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,257 INFO L168 Benchmark]: Boogie Preprocessor took 58.86 ms. Allocated memory is still 45.1 MB. Free memory was 13.5 MB in the beginning and 27.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,258 INFO L168 Benchmark]: RCFGBuilder took 879.76 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 26.9 MB in the beginning and 25.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,258 INFO L168 Benchmark]: TraceAbstraction took 6076.16 ms. Allocated memory was 46.7 MB in the beginning and 59.8 MB in the end (delta: 13.1 MB). Free memory was 25.1 MB in the beginning and 20.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,259 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 59.8 MB. Free memory was 20.1 MB in the beginning and 19.5 MB in the end (delta: 582.0 kB). Peak memory consumption was 582.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:46:06,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 651.29 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 9.2 MB in the beginning and 16.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 45.1 MB. Free memory was 16.2 MB in the beginning and 13.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 58.86 ms. Allocated memory is still 45.1 MB. Free memory was 13.5 MB in the beginning and 27.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 879.76 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 26.9 MB in the beginning and 25.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6076.16 ms. Allocated memory was 46.7 MB in the beginning and 59.8 MB in the end (delta: 13.1 MB). Free memory was 25.1 MB in the beginning and 20.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.3 GB. * Witness Printer took 5.12 ms. Allocated memory is still 59.8 MB. Free memory was 20.1 MB in the beginning and 19.5 MB in the end (delta: 582.0 kB). Peak memory consumption was 582.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 985]: 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: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data == 1) [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-2.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 5.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 169 SDtfs, 161 SDslu, 58 SDs, 0 SdLazy, 50 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 37 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 654 SizeOfPredicates, 2 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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...