./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b909735efeb9bc00b7df4035956af92a753b9076 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:12:06,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:12:06,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:12:06,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:12:06,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:12:06,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:12:06,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:12:06,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:12:06,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:12:06,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:12:06,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:12:06,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:12:06,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:12:06,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:12:06,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:12:06,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:12:06,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:12:06,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:12:06,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:12:06,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:12:06,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:12:06,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:12:06,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:12:06,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:12:06,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:12:06,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:12:06,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:12:06,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:12:06,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:12:06,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:12:06,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:12:06,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:12:06,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:12:06,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:12:06,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:12:06,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:12:06,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:12:06,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:12:06,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:12:06,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:12:06,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:12:06,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-30 03:12:06,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:12:06,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:12:06,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:12:06,754 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:12:06,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:12:06,754 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:12:06,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:12:06,755 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:12:06,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:12:06,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:12:06,757 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:12:06,757 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:12:06,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:12:06,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:12:06,758 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:12:06,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 03:12:06,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 03:12:06,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:12:06,760 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:12:06,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 03:12:06,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:12:06,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:12:06,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:12:06,761 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 03:12:06,761 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 03:12:06,762 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 03:12:06,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:12:06,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:12:06,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:12:06,765 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:12:06,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:12:06,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:12:06,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:12:06,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:12:06,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:12:06,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:12:06,767 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:12:06,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:12:06,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:12:06,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:12:06,773 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_07d6734e-a7a7-45ea-b951-2cb71728f8dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b909735efeb9bc00b7df4035956af92a753b9076 [2020-11-30 03:12:07,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:12:07,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:12:07,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:12:07,210 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:12:07,211 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:12:07,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/../../sv-benchmarks/c/verifythis/elimination_max.c [2020-11-30 03:12:07,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/data/766d985ac/362511078f4c4c9d9c926ddf20e8c938/FLAG147da256a [2020-11-30 03:12:07,898 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:12:07,899 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/sv-benchmarks/c/verifythis/elimination_max.c [2020-11-30 03:12:07,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/data/766d985ac/362511078f4c4c9d9c926ddf20e8c938/FLAG147da256a [2020-11-30 03:12:08,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/data/766d985ac/362511078f4c4c9d9c926ddf20e8c938 [2020-11-30 03:12:08,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:12:08,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:12:08,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:12:08,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:12:08,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:12:08,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff19b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08, skipping insertion in model container [2020-11-30 03:12:08,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:12:08,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:12:08,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:12:08,516 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:12:08,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:12:08,557 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:12:08,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08 WrapperNode [2020-11-30 03:12:08,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:12:08,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:12:08,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:12:08,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:12:08,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:12:08,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:12:08,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:12:08,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:12:08,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... [2020-11-30 03:12:08,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:12:08,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:12:08,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:12:08,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:12:08,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/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 [2020-11-30 03:12:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:12:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:12:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 03:12:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:12:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:12:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 03:12:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:12:09,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:12:09,571 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 03:12:09,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:12:09 BoogieIcfgContainer [2020-11-30 03:12:09,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:12:09,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:12:09,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:12:09,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:12:09,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:12:08" (1/3) ... [2020-11-30 03:12:09,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495f67ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:12:09, skipping insertion in model container [2020-11-30 03:12:09,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:12:08" (2/3) ... [2020-11-30 03:12:09,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495f67ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:12:09, skipping insertion in model container [2020-11-30 03:12:09,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:12:09" (3/3) ... [2020-11-30 03:12:09,589 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2020-11-30 03:12:09,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:12:09,608 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-11-30 03:12:09,623 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-11-30 03:12:09,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:12:09,648 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 03:12:09,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:12:09,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:12:09,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:12:09,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:12:09,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:12:09,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:12:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-30 03:12:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 03:12:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:09,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 03:12:09,672 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash 147728, now seen corresponding path program 1 times [2020-11-30 03:12:09,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:09,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827888735] [2020-11-30 03:12:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:10,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827888735] [2020-11-30 03:12:10,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:10,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 03:12:10,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590576329] [2020-11-30 03:12:10,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:12:10,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:10,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:12:10,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:12:10,074 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-11-30 03:12:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:10,175 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-30 03:12:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:12:10,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-30 03:12:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:10,191 INFO L225 Difference]: With dead ends: 31 [2020-11-30 03:12:10,191 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 03:12:10,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:12:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 03:12:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 03:12:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 03:12:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-30 03:12:10,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 3 [2020-11-30 03:12:10,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:10,253 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-30 03:12:10,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:12:10,254 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-30 03:12:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 03:12:10,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:10,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 03:12:10,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:12:10,256 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 147729, now seen corresponding path program 1 times [2020-11-30 03:12:10,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:10,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963284906] [2020-11-30 03:12:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:10,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963284906] [2020-11-30 03:12:10,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:10,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:12:10,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291796153] [2020-11-30 03:12:10,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:12:10,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:10,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:12:10,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:12:10,444 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 4 states. [2020-11-30 03:12:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:10,582 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-11-30 03:12:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:12:10,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-30 03:12:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:10,584 INFO L225 Difference]: With dead ends: 30 [2020-11-30 03:12:10,584 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 03:12:10,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:10,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 03:12:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 03:12:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 03:12:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-30 03:12:10,594 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 3 [2020-11-30 03:12:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:10,594 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-30 03:12:10,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:12:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-30 03:12:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 03:12:10,595 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:10,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 03:12:10,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:12:10,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash 144793, now seen corresponding path program 1 times [2020-11-30 03:12:10,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:10,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152906696] [2020-11-30 03:12:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:10,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152906696] [2020-11-30 03:12:10,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:10,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:12:10,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77237401] [2020-11-30 03:12:10,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:12:10,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:10,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:12:10,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:12:10,725 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 4 states. [2020-11-30 03:12:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:10,931 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-11-30 03:12:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:12:10,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-30 03:12:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:10,933 INFO L225 Difference]: With dead ends: 58 [2020-11-30 03:12:10,934 INFO L226 Difference]: Without dead ends: 58 [2020-11-30 03:12:10,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-30 03:12:10,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 32. [2020-11-30 03:12:10,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 03:12:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-11-30 03:12:10,944 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 3 [2020-11-30 03:12:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:10,944 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-11-30 03:12:10,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:12:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-11-30 03:12:10,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 03:12:10,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:10,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 03:12:10,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 03:12:10,946 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash 4579585, now seen corresponding path program 1 times [2020-11-30 03:12:10,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:10,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472985280] [2020-11-30 03:12:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:11,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472985280] [2020-11-30 03:12:11,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:11,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:12:11,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927973794] [2020-11-30 03:12:11,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:12:11,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:12:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:12:11,060 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 4 states. [2020-11-30 03:12:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:11,160 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-11-30 03:12:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:12:11,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 03:12:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:11,163 INFO L225 Difference]: With dead ends: 56 [2020-11-30 03:12:11,163 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 03:12:11,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:12:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 03:12:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2020-11-30 03:12:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 03:12:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-11-30 03:12:11,176 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 4 [2020-11-30 03:12:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:11,176 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-11-30 03:12:11,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:12:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-11-30 03:12:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 03:12:11,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:11,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 03:12:11,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 03:12:11,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash 4488547, now seen corresponding path program 1 times [2020-11-30 03:12:11,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:11,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931441667] [2020-11-30 03:12:11,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:11,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931441667] [2020-11-30 03:12:11,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:11,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:12:11,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444778162] [2020-11-30 03:12:11,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:12:11,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:12:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:12:11,298 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2020-11-30 03:12:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:11,437 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-11-30 03:12:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:12:11,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 03:12:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:11,439 INFO L225 Difference]: With dead ends: 55 [2020-11-30 03:12:11,439 INFO L226 Difference]: Without dead ends: 55 [2020-11-30 03:12:11,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:11,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-30 03:12:11,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2020-11-30 03:12:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:12:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-11-30 03:12:11,447 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 4 [2020-11-30 03:12:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:11,447 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-11-30 03:12:11,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:12:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-11-30 03:12:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 03:12:11,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:11,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 03:12:11,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 03:12:11,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash 106068409, now seen corresponding path program 1 times [2020-11-30 03:12:11,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:11,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361002679] [2020-11-30 03:12:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:11,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361002679] [2020-11-30 03:12:11,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:11,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 03:12:11,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319563625] [2020-11-30 03:12:11,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:12:11,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:12:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:11,605 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 5 states. [2020-11-30 03:12:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:11,812 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-11-30 03:12:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:12:11,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-30 03:12:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:11,815 INFO L225 Difference]: With dead ends: 53 [2020-11-30 03:12:11,815 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 03:12:11,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:12:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 03:12:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-11-30 03:12:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:12:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-11-30 03:12:11,831 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 6 [2020-11-30 03:12:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:11,832 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-11-30 03:12:11,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:12:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-30 03:12:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 03:12:11,833 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:11,833 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-30 03:12:11,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 03:12:11,835 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash 18613504, now seen corresponding path program 1 times [2020-11-30 03:12:11,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:11,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857076629] [2020-11-30 03:12:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:11,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857076629] [2020-11-30 03:12:11,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210134528] [2020-11-30 03:12:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/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 [2020-11-30 03:12:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:12,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:12:12,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:12:12,229 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 03:12:12,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:12:12,232 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 4, 1] term [2020-11-30 03:12:12,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:12:12,277 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:12:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:12,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:12:12,410 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 03:12:12,410 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:12,414 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:12,418 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 4, 1] term [2020-11-30 03:12:12,418 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:12,426 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:12,437 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:12,497 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 18 [2020-11-30 03:12:12,499 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:12,505 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2020-11-30 03:12:12,507 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:12,595 INFO L625 ElimStorePlain]: treesize reduction 42, result has 48.1 percent of original size [2020-11-30 03:12:12,603 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2020-11-30 03:12:12,606 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:12,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 03:12:12,626 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-11-30 03:12:12,626 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:104, output treesize:16 [2020-11-30 03:12:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:12,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:12:12,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2020-11-30 03:12:12,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536451863] [2020-11-30 03:12:12,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:12:12,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:12:12,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 03:12:12,654 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 5 states. [2020-11-30 03:12:12,817 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-30 03:12:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:12,952 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-11-30 03:12:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:12:12,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-30 03:12:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:12,954 INFO L225 Difference]: With dead ends: 52 [2020-11-30 03:12:12,954 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 03:12:12,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-11-30 03:12:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 03:12:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-11-30 03:12:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 03:12:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-11-30 03:12:12,960 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 6 [2020-11-30 03:12:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:12,961 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-11-30 03:12:12,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:12:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-11-30 03:12:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 03:12:12,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:12,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:13,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 03:12:13,171 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:13,172 INFO L82 PathProgramCache]: Analyzing trace with hash 577109626, now seen corresponding path program 1 times [2020-11-30 03:12:13,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:13,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34289628] [2020-11-30 03:12:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:13,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34289628] [2020-11-30 03:12:13,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814991201] [2020-11-30 03:12:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/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 [2020-11-30 03:12:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:13,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:12:13,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:12:13,456 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 2, 4, 1] term [2020-11-30 03:12:13,456 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 03:12:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:13,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:12:13,555 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:13,557 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 4, 1] term [2020-11-30 03:12:13,558 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:13,560 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:13,564 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:13,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2020-11-30 03:12:13,592 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:13,605 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 18 [2020-11-30 03:12:13,607 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:13,654 INFO L625 ElimStorePlain]: treesize reduction 22, result has 62.7 percent of original size [2020-11-30 03:12:13,665 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2020-11-30 03:12:13,667 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:13,684 INFO L625 ElimStorePlain]: treesize reduction 8, result has 68.0 percent of original size [2020-11-30 03:12:13,685 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-11-30 03:12:13,685 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:84, output treesize:17 [2020-11-30 03:12:13,707 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:13,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 03:12:13,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 9 [2020-11-30 03:12:13,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795106143] [2020-11-30 03:12:13,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 03:12:13,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:13,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 03:12:13,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 03:12:13,728 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 8 states. [2020-11-30 03:12:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:14,014 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-30 03:12:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 03:12:14,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-30 03:12:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:14,022 INFO L225 Difference]: With dead ends: 50 [2020-11-30 03:12:14,022 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 03:12:14,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:12:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 03:12:14,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2020-11-30 03:12:14,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 03:12:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-30 03:12:14,027 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-11-30 03:12:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:14,028 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-30 03:12:14,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 03:12:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-30 03:12:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 03:12:14,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:14,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2020-11-30 03:12:14,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:12:14,250 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash 577018588, now seen corresponding path program 1 times [2020-11-30 03:12:14,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:14,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703915168] [2020-11-30 03:12:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:14,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703915168] [2020-11-30 03:12:14,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984538328] [2020-11-30 03:12:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:12:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:14,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 03:12:14,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:12:14,467 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-30 03:12:14,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:12:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:14,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:12:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:14,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 03:12:14,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [3] total 10 [2020-11-30 03:12:14,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548543867] [2020-11-30 03:12:14,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 03:12:14,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:14,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 03:12:14,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 03:12:14,670 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2020-11-30 03:12:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:14,850 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-11-30 03:12:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:12:14,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-30 03:12:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:14,852 INFO L225 Difference]: With dead ends: 49 [2020-11-30 03:12:14,852 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 03:12:14,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-30 03:12:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 03:12:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2020-11-30 03:12:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 03:12:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-11-30 03:12:14,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 7 [2020-11-30 03:12:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:14,864 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-11-30 03:12:14,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 03:12:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-30 03:12:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:12:14,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:14,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:15,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:12:15,078 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:15,078 INFO L82 PathProgramCache]: Analyzing trace with hash 551623922, now seen corresponding path program 1 times [2020-11-30 03:12:15,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:15,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250941854] [2020-11-30 03:12:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:12:15,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250941854] [2020-11-30 03:12:15,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:15,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 03:12:15,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143673799] [2020-11-30 03:12:15,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:12:15,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:15,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:12:15,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:15,170 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-11-30 03:12:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:15,243 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-11-30 03:12:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:12:15,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 03:12:15,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:15,244 INFO L225 Difference]: With dead ends: 28 [2020-11-30 03:12:15,244 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 03:12:15,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:12:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 03:12:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-11-30 03:12:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 03:12:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-30 03:12:15,248 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2020-11-30 03:12:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:15,248 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-30 03:12:15,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:12:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-30 03:12:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 03:12:15,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:15,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:15,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 03:12:15,250 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:15,251 INFO L82 PathProgramCache]: Analyzing trace with hash 540553615, now seen corresponding path program 1 times [2020-11-30 03:12:15,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:15,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493041455] [2020-11-30 03:12:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:15,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493041455] [2020-11-30 03:12:15,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:15,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 03:12:15,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579214342] [2020-11-30 03:12:15,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:12:15,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:12:15,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:15,374 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-11-30 03:12:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:15,517 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-11-30 03:12:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:12:15,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 03:12:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:15,519 INFO L225 Difference]: With dead ends: 45 [2020-11-30 03:12:15,519 INFO L226 Difference]: Without dead ends: 45 [2020-11-30 03:12:15,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:12:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-30 03:12:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2020-11-30 03:12:15,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 03:12:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-30 03:12:15,523 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2020-11-30 03:12:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:15,524 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-30 03:12:15,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:12:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-30 03:12:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 03:12:15,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:15,525 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:15,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 03:12:15,525 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash -218813851, now seen corresponding path program 1 times [2020-11-30 03:12:15,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:15,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114996412] [2020-11-30 03:12:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:15,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114996412] [2020-11-30 03:12:15,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:15,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 03:12:15,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465567525] [2020-11-30 03:12:15,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:12:15,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:15,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:12:15,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:12:15,612 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-11-30 03:12:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:15,742 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-11-30 03:12:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:12:15,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 03:12:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:15,743 INFO L225 Difference]: With dead ends: 43 [2020-11-30 03:12:15,744 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 03:12:15,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:12:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 03:12:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-11-30 03:12:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 03:12:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-30 03:12:15,748 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-11-30 03:12:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:15,748 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-30 03:12:15,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:12:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-30 03:12:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 03:12:15,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:15,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:15,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 03:12:15,755 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:15,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1806748271, now seen corresponding path program 1 times [2020-11-30 03:12:15,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:15,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238356927] [2020-11-30 03:12:15,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:12:15,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238356927] [2020-11-30 03:12:15,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:15,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 03:12:15,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990470495] [2020-11-30 03:12:15,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:12:15,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:15,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:12:15,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:12:15,812 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 3 states. [2020-11-30 03:12:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:15,836 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-30 03:12:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:12:15,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 03:12:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:15,837 INFO L225 Difference]: With dead ends: 34 [2020-11-30 03:12:15,837 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 03:12:15,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:12:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 03:12:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-30 03:12:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 03:12:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-11-30 03:12:15,841 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 14 [2020-11-30 03:12:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:15,842 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-11-30 03:12:15,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:12:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-11-30 03:12:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 03:12:15,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:15,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:15,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 03:12:15,843 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:15,844 INFO L82 PathProgramCache]: Analyzing trace with hash -174347786, now seen corresponding path program 1 times [2020-11-30 03:12:15,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:15,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149739961] [2020-11-30 03:12:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:12:15,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149739961] [2020-11-30 03:12:15,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:15,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 03:12:15,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121471083] [2020-11-30 03:12:15,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:12:15,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:15,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:12:15,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:15,955 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2020-11-30 03:12:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:16,039 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-30 03:12:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:12:16,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 03:12:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:16,040 INFO L225 Difference]: With dead ends: 32 [2020-11-30 03:12:16,041 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 03:12:16,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:12:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 03:12:16,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-30 03:12:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 03:12:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-11-30 03:12:16,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 14 [2020-11-30 03:12:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:16,045 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-11-30 03:12:16,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:12:16,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-11-30 03:12:16,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 03:12:16,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:16,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:16,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 03:12:16,047 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:16,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1118304914, now seen corresponding path program 1 times [2020-11-30 03:12:16,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:16,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065419285] [2020-11-30 03:12:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:12:16,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065419285] [2020-11-30 03:12:16,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:12:16,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:12:16,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734017509] [2020-11-30 03:12:16,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:12:16,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:16,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:12:16,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:12:16,155 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 4 states. [2020-11-30 03:12:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:16,198 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-11-30 03:12:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:12:16,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 03:12:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:16,200 INFO L225 Difference]: With dead ends: 31 [2020-11-30 03:12:16,200 INFO L226 Difference]: Without dead ends: 17 [2020-11-30 03:12:16,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:12:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-30 03:12:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-30 03:12:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-30 03:12:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-30 03:12:16,202 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16 [2020-11-30 03:12:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:16,203 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-30 03:12:16,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:12:16,203 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-30 03:12:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 03:12:16,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:16,204 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:16,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 03:12:16,204 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:16,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:16,205 INFO L82 PathProgramCache]: Analyzing trace with hash -44292852, now seen corresponding path program 1 times [2020-11-30 03:12:16,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:16,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223156105] [2020-11-30 03:12:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:16,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223156105] [2020-11-30 03:12:16,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106096931] [2020-11-30 03:12:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:12:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:16,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 03:12:16,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:12:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:16,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:12:16,668 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:16,694 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2020-11-30 03:12:16,697 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:16,702 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 15 [2020-11-30 03:12:16,703 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 03:12:16,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 03:12:16,714 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-11-30 03:12:16,714 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:11 [2020-11-30 03:12:16,734 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:12:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:16,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1353780300] [2020-11-30 03:12:16,783 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-11-30 03:12:16,783 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:12:16,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:12:16,796 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:12:16,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:12:16,930 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:12:16,943 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:12:17,832 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:12:18,205 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-11-30 03:12:18,577 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-11-30 03:12:18,995 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-11-30 03:12:19,427 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-11-30 03:12:19,891 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-11-30 03:12:20,670 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2020-11-30 03:12:21,310 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2020-11-30 03:12:21,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:12:21,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 03:12:21,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2020-11-30 03:12:21,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921631473] [2020-11-30 03:12:21,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-30 03:12:21,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:21,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 03:12:21,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-11-30 03:12:21,508 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2020-11-30 03:12:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:21,866 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-30 03:12:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:12:21,867 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2020-11-30 03:12:21,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:21,867 INFO L225 Difference]: With dead ends: 27 [2020-11-30 03:12:21,868 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 03:12:21,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 03:12:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 03:12:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-11-30 03:12:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 03:12:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-30 03:12:21,871 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-11-30 03:12:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:21,871 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-30 03:12:21,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-30 03:12:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-30 03:12:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 03:12:21,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:12:21,872 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:12:22,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:12:22,090 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-30 03:12:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:12:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash 913494838, now seen corresponding path program 2 times [2020-11-30 03:12:22,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:12:22,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822230726] [2020-11-30 03:12:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:12:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:12:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:12:22,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822230726] [2020-11-30 03:12:22,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049086859] [2020-11-30 03:12:22,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:12:22,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 03:12:22,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 03:12:22,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:12:22,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:12:22,475 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-11-30 03:12:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:12:22,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:12:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 03:12:22,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [189311739] [2020-11-30 03:12:22,937 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2020-11-30 03:12:22,937 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:12:22,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:12:22,938 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:12:22,938 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:12:22,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:12:22,986 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:12:23,638 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:12:23,909 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-11-30 03:12:24,207 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-11-30 03:12:24,643 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-11-30 03:12:24,956 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-11-30 03:12:25,330 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-11-30 03:12:25,808 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2020-11-30 03:12:26,325 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2020-11-30 03:12:26,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:12:26,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 03:12:26,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2020-11-30 03:12:26,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926419805] [2020-11-30 03:12:26,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 03:12:26,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:12:26,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 03:12:26,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2020-11-30 03:12:26,508 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 16 states. [2020-11-30 03:12:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:12:26,800 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-11-30 03:12:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:12:26,800 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 21 [2020-11-30 03:12:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:12:26,801 INFO L225 Difference]: With dead ends: 26 [2020-11-30 03:12:26,801 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:12:26,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2020-11-30 03:12:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:12:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:12:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:12:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:12:26,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-30 03:12:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:12:26,802 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:12:26,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 03:12:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:12:26,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:12:27,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-11-30 03:12:27,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:12:27 BoogieIcfgContainer [2020-11-30 03:12:27,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:12:27,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:12:27,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:12:27,009 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:12:27,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:12:09" (3/4) ... [2020-11-30 03:12:27,014 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:12:27,026 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-30 03:12:27,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 03:12:27,028 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 03:12:27,028 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:12:27,076 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_07d6734e-a7a7-45ea-b951-2cb71728f8dd/bin/utaipan/witness.graphml [2020-11-30 03:12:27,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:12:27,078 INFO L168 Benchmark]: Toolchain (without parser) took 18819.39 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 82.1 MB in the beginning and 192.5 MB in the end (delta: -110.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:12:27,078 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:12:27,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.08 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 89.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:12:27,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.83 ms. Allocated memory is still 113.2 MB. Free memory was 89.8 MB in the beginning and 88.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:12:27,080 INFO L168 Benchmark]: Boogie Preprocessor took 35.25 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 87.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:12:27,080 INFO L168 Benchmark]: RCFGBuilder took 932.84 ms. Allocated memory is still 113.2 MB. Free memory was 87.0 MB in the beginning and 55.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:12:27,080 INFO L168 Benchmark]: TraceAbstraction took 17431.88 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 54.6 MB in the beginning and 195.2 MB in the end (delta: -140.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:12:27,081 INFO L168 Benchmark]: Witness Printer took 67.72 ms. Allocated memory is still 237.0 MB. Free memory was 195.2 MB in the beginning and 192.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:12:27,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 39.3 MB in the beginning and 39.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.08 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 89.8 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.83 ms. Allocated memory is still 113.2 MB. Free memory was 89.8 MB in the beginning and 88.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.25 ms. Allocated memory is still 113.2 MB. Free memory was 88.1 MB in the beginning and 87.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.84 ms. Allocated memory is still 113.2 MB. Free memory was 87.0 MB in the beginning and 55.0 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17431.88 ms. Allocated memory was 113.2 MB in the beginning and 237.0 MB in the end (delta: 123.7 MB). Free memory was 54.6 MB in the beginning and 195.2 MB in the end (delta: -140.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.72 ms. Allocated memory is still 237.0 MB. Free memory was 195.2 MB in the beginning and 192.5 MB in the end (delta: 2.7 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: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.3s, OverallIterations: 17, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 229 SDtfs, 615 SDslu, 313 SDs, 0 SdLazy, 862 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 130 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 214 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 244 ConstructedInterpolants, 0 QuantifiedInterpolants, 41091 SizeOfPredicates, 49 NumberOfNonLiveVariables, 509 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 27 InterpolantComputations, 17 PerfectInterpolantSequences, 35/63 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...