./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/quick_sort_split.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/quick_sort_split.i -s /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e29cb2168e7bab34fbc89c12b0474d2c34d77836 .................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:00:02,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:02,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:02,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:02,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:02,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:02,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:02,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:02,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:02,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:02,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:02,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:02,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:02,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:02,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:02,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:02,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:02,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:02,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:02,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:02,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:02,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:02,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:02,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:02,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:02,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:02,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:02,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:02,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:02,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:02,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:02,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:02,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:02,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:02,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:02,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:02,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:02,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:02,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:02,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:02,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:02,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:00:02,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:02,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:02,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:02,830 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:02,831 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:02,831 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:02,831 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:00:02,831 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:02,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:02,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:00:02,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:00:02,832 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:02,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:00:02,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:00:02,833 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:00:02,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:02,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:02,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:00:02,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:02,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:02,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:00:02,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:02,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:00:02,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:02,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:02,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:00:02,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:02,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:00:02,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:02,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:02,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:02,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:02,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:02,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:02,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:00:02,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:00:02,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:00:02,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:00:02,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:02,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:02,839 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29cb2168e7bab34fbc89c12b0474d2c34d77836 [2020-11-22 13:00:03,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:03,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:03,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:03,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:03,154 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:03,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/../../sv-benchmarks/c/heap-data/quick_sort_split.i [2020-11-22 13:00:03,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/data/82fdb4fe2/fe4924f2827642719acdb47b20a47e60/FLAG2ebc4929a [2020-11-22 13:00:03,733 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:03,734 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/sv-benchmarks/c/heap-data/quick_sort_split.i [2020-11-22 13:00:03,747 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/data/82fdb4fe2/fe4924f2827642719acdb47b20a47e60/FLAG2ebc4929a [2020-11-22 13:00:04,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/data/82fdb4fe2/fe4924f2827642719acdb47b20a47e60 [2020-11-22 13:00:04,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:04,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:04,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:04,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:04,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:04,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b6b57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04, skipping insertion in model container [2020-11-22 13:00:04,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:04,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:04,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:04,506 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:00:04,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:04,634 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:00:04,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04 WrapperNode [2020-11-22 13:00:04,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:04,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:04,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:00:04,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:00:04,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:04,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:00:04,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:00:04,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:00:04,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... [2020-11-22 13:00:04,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:00:04,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:00:04,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:00:04,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:00:04,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/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 [2020-11-22 13:00:04,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:00:04,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-22 13:00:04,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:00:04,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:00:04,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:00:05,615 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:00:05,615 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-22 13:00:05,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:05 BoogieIcfgContainer [2020-11-22 13:00:05,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:00:05,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:00:05,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:00:05,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:00:05,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:00:04" (1/3) ... [2020-11-22 13:00:05,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a101ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:05, skipping insertion in model container [2020-11-22 13:00:05,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:04" (2/3) ... [2020-11-22 13:00:05,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a101ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:05, skipping insertion in model container [2020-11-22 13:00:05,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:05" (3/3) ... [2020-11-22 13:00:05,626 INFO L111 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2020-11-22 13:00:05,637 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:00:05,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:00:05,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:00:05,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:00:05,676 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:00:05,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:00:05,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:00:05,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:00:05,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:00:05,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:00:05,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:00:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-22 13:00:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:00:05,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:05,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:05,696 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:05,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1715280347, now seen corresponding path program 1 times [2020-11-22 13:00:05,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:05,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130082234] [2020-11-22 13:00:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:05,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130082234] [2020-11-22 13:00:05,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:05,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:00:05,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365551596] [2020-11-22 13:00:05,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:00:05,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:05,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:00:05,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:00:05,892 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-22 13:00:05,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:05,904 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-11-22 13:00:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:00:05,906 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-22 13:00:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:05,918 INFO L225 Difference]: With dead ends: 33 [2020-11-22 13:00:05,929 INFO L226 Difference]: Without dead ends: 17 [2020-11-22 13:00:05,932 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 [2020-11-22 13:00:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-22 13:00:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-22 13:00:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 13:00:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-11-22 13:00:05,974 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2020-11-22 13:00:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:05,975 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-11-22 13:00:05,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:00:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-11-22 13:00:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:00:05,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:05,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:05,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:00:05,981 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:05,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:05,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2036687950, now seen corresponding path program 1 times [2020-11-22 13:00:05,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:05,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3315496] [2020-11-22 13:00:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:06,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3315496] [2020-11-22 13:00:06,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:06,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:06,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528272258] [2020-11-22 13:00:06,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:06,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:06,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:06,076 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 3 states. [2020-11-22 13:00:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:06,089 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-22 13:00:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:06,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-22 13:00:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:06,091 INFO L225 Difference]: With dead ends: 24 [2020-11-22 13:00:06,091 INFO L226 Difference]: Without dead ends: 12 [2020-11-22 13:00:06,092 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 [2020-11-22 13:00:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-22 13:00:06,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-22 13:00:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-22 13:00:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-22 13:00:06,094 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2020-11-22 13:00:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:06,095 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-22 13:00:06,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-22 13:00:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:00:06,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:06,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:06,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:00:06,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1234759577, now seen corresponding path program 1 times [2020-11-22 13:00:06,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:00:06,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729729161] [2020-11-22 13:00:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:00:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:06,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729729161] [2020-11-22 13:00:06,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:06,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:00:06,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809937173] [2020-11-22 13:00:06,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:00:06,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:00:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:00:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:00:06,158 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2020-11-22 13:00:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:06,171 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-22 13:00:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:00:06,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-22 13:00:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:06,172 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:00:06,172 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:00:06,173 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 [2020-11-22 13:00:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:00:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:00:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:00:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:00:06,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-22 13:00:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:06,174 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:00:06,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:00:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:00:06,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:00:06,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:00:06,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:00:06,200 INFO L274 CegarLoopResult]: For program point L609(lines 609 610) no Hoare annotation was computed. [2020-11-22 13:00:06,201 INFO L274 CegarLoopResult]: For program point L609-1(lines 609 610) no Hoare annotation was computed. [2020-11-22 13:00:06,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-11-22 13:00:06,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:00:06,201 INFO L277 CegarLoopResult]: At program point L573-1(lines 573 588) the Hoare annotation is: true [2020-11-22 13:00:06,201 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-11-22 13:00:06,201 INFO L274 CegarLoopResult]: For program point L582-1(lines 582 588) no Hoare annotation was computed. [2020-11-22 13:00:06,201 INFO L277 CegarLoopResult]: At program point L582-3(lines 582 588) the Hoare annotation is: true [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L603-1(lines 591 613) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L608-1(lines 591 613) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L604(lines 604 605) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L274 CegarLoopResult]: For program point L604-1(lines 604 605) no Hoare annotation was computed. [2020-11-22 13:00:06,202 INFO L270 CegarLoopResult]: At program point L596-2(lines 596 602) the Hoare annotation is: (and (= ULTIMATE.start_main_~high~0.base 0) (= ULTIMATE.start_main_~low~0.offset 0) (= ULTIMATE.start_main_~high~0.offset 0) (= ULTIMATE.start_main_~low~0.base 0)) [2020-11-22 13:00:06,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:00:06 BoogieIcfgContainer [2020-11-22 13:00:06,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:00:06,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:00:06,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:00:06,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:00:06,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:05" (3/4) ... [2020-11-22 13:00:06,221 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:00:06,230 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-22 13:00:06,231 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:00:06,231 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:00:06,232 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:00:06,293 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69011c31-9bfd-4529-856c-2ccaa7d6107f/bin/utaipan/witness.graphml [2020-11-22 13:00:06,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:00:06,296 INFO L168 Benchmark]: Toolchain (without parser) took 2227.74 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 81.2 MB in the beginning and 102.0 MB in the end (delta: -20.8 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:06,297 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:06,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.56 ms. Allocated memory is still 113.2 MB. Free memory was 81.0 MB in the beginning and 77.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:06,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 113.2 MB. Free memory was 77.7 MB in the beginning and 75.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:06,298 INFO L168 Benchmark]: Boogie Preprocessor took 31.98 ms. Allocated memory is still 113.2 MB. Free memory was 75.6 MB in the beginning and 73.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:06,299 INFO L168 Benchmark]: RCFGBuilder took 904.74 ms. Allocated memory is still 113.2 MB. Free memory was 73.9 MB in the beginning and 73.1 MB in the end (delta: 816.0 kB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:06,299 INFO L168 Benchmark]: TraceAbstraction took 597.26 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 105.4 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:06,300 INFO L168 Benchmark]: Witness Printer took 77.49 ms. Allocated memory is still 136.3 MB. Free memory was 105.4 MB in the beginning and 102.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:06,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 38.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.56 ms. Allocated memory is still 113.2 MB. Free memory was 81.0 MB in the beginning and 77.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 113.2 MB. Free memory was 77.7 MB in the beginning and 75.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.98 ms. Allocated memory is still 113.2 MB. Free memory was 75.6 MB in the beginning and 73.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 904.74 ms. Allocated memory is still 113.2 MB. Free memory was 73.9 MB in the beginning and 73.1 MB in the end (delta: 816.0 kB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 597.26 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 72.5 MB in the beginning and 105.4 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 77.49 ms. Allocated memory is still 136.3 MB. Free memory was 105.4 MB in the beginning and 102.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 596]: Loop Invariant Derived loop invariant: ((high == 0 && low == 0) && high == 0) && low == 0 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 9 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 452 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...