./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd6046dbb3f1bc5e91393ebfb0f595a2a5a1c1d9 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:04:52,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:04:52,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:04:52,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:04:52,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:04:52,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:04:52,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:04:52,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:04:52,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:04:52,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:04:52,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:04:52,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:04:52,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:04:52,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:04:52,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:04:52,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:04:52,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:04:52,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:04:52,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:04:52,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:04:52,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:04:52,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:04:52,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:04:52,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:04:52,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:04:52,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:04:52,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:04:52,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:04:52,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:04:52,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:04:52,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:04:52,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:04:52,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:04:52,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:04:52,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:04:52,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:04:52,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:04:52,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:04:52,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:04:52,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:04:52,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:04:52,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:04:52,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:04:52,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:04:52,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:04:52,796 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:04:52,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:04:52,797 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:04:52,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:04:52,797 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:04:52,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:04:52,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:04:52,802 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:04:52,802 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:04:52,803 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:04:52,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:04:52,803 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:04:52,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:04:52,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:04:52,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:04:52,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:04:52,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:04:52,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:04:52,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:04:52,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:04:52,806 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:04:52,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:04:52,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:04:52,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:04:52,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:04:52,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:04:52,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:04:52,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:04:52,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:52,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:04:52,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:04:52,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:04:52,810 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:04:52,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:04:52,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:04:52,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:04:52,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:04:52,811 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_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd6046dbb3f1bc5e91393ebfb0f595a2a5a1c1d9 [2020-11-22 13:04:53,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:04:53,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:04:53,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:04:53,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:04:53,127 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:04:53,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2020-11-22 13:04:53,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/data/3b16dfb41/bf2bd8186f1a4350a71d38778f8abcf0/FLAG55c06787a [2020-11-22 13:04:53,866 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:04:53,867 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2020-11-22 13:04:53,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/data/3b16dfb41/bf2bd8186f1a4350a71d38778f8abcf0/FLAG55c06787a [2020-11-22 13:04:54,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/data/3b16dfb41/bf2bd8186f1a4350a71d38778f8abcf0 [2020-11-22 13:04:54,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:04:54,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:04:54,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:54,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:04:54,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:04:54,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:54" (1/1) ... [2020-11-22 13:04:54,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5d3cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:54, skipping insertion in model container [2020-11-22 13:04:54,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:04:54" (1/1) ... [2020-11-22 13:04:54,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:04:54,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:04:54,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:54,851 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:04:55,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:04:55,149 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:04:55,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55 WrapperNode [2020-11-22 13:04:55,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:04:55,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:55,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:04:55,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:04:55,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:04:55,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:04:55,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:04:55,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:04:55,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... [2020-11-22 13:04:55,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:04:55,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:04:55,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:04:55,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:04:55,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:04:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:04:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:04:55,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:04:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:04:59,005 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:04:59,005 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:04:59,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:59 BoogieIcfgContainer [2020-11-22 13:04:59,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:04:59,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:04:59,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:04:59,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:04:59,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:04:54" (1/3) ... [2020-11-22 13:04:59,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c6838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:59, skipping insertion in model container [2020-11-22 13:04:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:04:55" (2/3) ... [2020-11-22 13:04:59,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105c6838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:04:59, skipping insertion in model container [2020-11-22 13:04:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:59" (3/3) ... [2020-11-22 13:04:59,017 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2020-11-22 13:04:59,031 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:04:59,035 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:04:59,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:04:59,082 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:04:59,083 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:04:59,083 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:04:59,083 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:04:59,083 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:04:59,083 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:04:59,083 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:04:59,084 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:04:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-11-22 13:04:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-22 13:04:59,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:04:59,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:04:59,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:04:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:04:59,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1040894624, now seen corresponding path program 1 times [2020-11-22 13:04:59,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:04:59,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375466978] [2020-11-22 13:04:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:04:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:04:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:04:59,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375466978] [2020-11-22 13:04:59,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:04:59,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:04:59,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839709951] [2020-11-22 13:04:59,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:04:59,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:04:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:04:59,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:04:59,743 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-11-22 13:05:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:00,995 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2020-11-22 13:05:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:01,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-11-22 13:05:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:01,031 INFO L225 Difference]: With dead ends: 440 [2020-11-22 13:05:01,031 INFO L226 Difference]: Without dead ends: 289 [2020-11-22 13:05:01,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-22 13:05:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-11-22 13:05:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-11-22 13:05:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 550 transitions. [2020-11-22 13:05:01,131 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 550 transitions. Word has length 143 [2020-11-22 13:05:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:01,135 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 550 transitions. [2020-11-22 13:05:01,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 550 transitions. [2020-11-22 13:05:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-22 13:05:01,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:01,148 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:01,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:01,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:01,152 INFO L82 PathProgramCache]: Analyzing trace with hash 894627008, now seen corresponding path program 1 times [2020-11-22 13:05:01,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:01,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050405204] [2020-11-22 13:05:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:01,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050405204] [2020-11-22 13:05:01,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:01,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:01,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411267490] [2020-11-22 13:05:01,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:01,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:01,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:01,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:01,304 INFO L87 Difference]: Start difference. First operand 289 states and 550 transitions. Second operand 3 states. [2020-11-22 13:05:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:01,762 INFO L93 Difference]: Finished difference Result 865 states and 1648 transitions. [2020-11-22 13:05:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:01,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-22 13:05:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:01,767 INFO L225 Difference]: With dead ends: 865 [2020-11-22 13:05:01,767 INFO L226 Difference]: Without dead ends: 577 [2020-11-22 13:05:01,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-11-22 13:05:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2020-11-22 13:05:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-11-22 13:05:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1096 transitions. [2020-11-22 13:05:01,802 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1096 transitions. Word has length 148 [2020-11-22 13:05:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:01,802 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 1096 transitions. [2020-11-22 13:05:01,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:01,803 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1096 transitions. [2020-11-22 13:05:01,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-11-22 13:05:01,805 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:01,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:01,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:01,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:01,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:01,807 INFO L82 PathProgramCache]: Analyzing trace with hash -104740735, now seen corresponding path program 1 times [2020-11-22 13:05:01,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:01,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006728263] [2020-11-22 13:05:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:01,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:01,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006728263] [2020-11-22 13:05:01,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:01,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:01,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677563794] [2020-11-22 13:05:01,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:01,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:01,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:01,884 INFO L87 Difference]: Start difference. First operand 575 states and 1096 transitions. Second operand 3 states. [2020-11-22 13:05:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:02,923 INFO L93 Difference]: Finished difference Result 1721 states and 3285 transitions. [2020-11-22 13:05:02,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:02,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-11-22 13:05:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:02,932 INFO L225 Difference]: With dead ends: 1721 [2020-11-22 13:05:02,932 INFO L226 Difference]: Without dead ends: 1147 [2020-11-22 13:05:02,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-11-22 13:05:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-11-22 13:05:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-11-22 13:05:02,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 2124 transitions. [2020-11-22 13:05:02,969 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 2124 transitions. Word has length 151 [2020-11-22 13:05:02,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:02,970 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 2124 transitions. [2020-11-22 13:05:02,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 2124 transitions. [2020-11-22 13:05:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-22 13:05:02,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:02,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:02,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:02,974 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash 671162710, now seen corresponding path program 1 times [2020-11-22 13:05:02,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:02,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557260205] [2020-11-22 13:05:02,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 13:05:03,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557260205] [2020-11-22 13:05:03,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:03,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:03,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539646158] [2020-11-22 13:05:03,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:03,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:03,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:03,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:03,056 INFO L87 Difference]: Start difference. First operand 1147 states and 2124 transitions. Second operand 3 states. [2020-11-22 13:05:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:04,132 INFO L93 Difference]: Finished difference Result 3437 states and 6369 transitions. [2020-11-22 13:05:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:04,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2020-11-22 13:05:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:04,149 INFO L225 Difference]: With dead ends: 3437 [2020-11-22 13:05:04,150 INFO L226 Difference]: Without dead ends: 2291 [2020-11-22 13:05:04,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:04,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-11-22 13:05:04,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2020-11-22 13:05:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-11-22 13:05:04,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3940 transitions. [2020-11-22 13:05:04,228 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3940 transitions. Word has length 165 [2020-11-22 13:05:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:04,228 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3940 transitions. [2020-11-22 13:05:04,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3940 transitions. [2020-11-22 13:05:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-22 13:05:04,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:04,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:04,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:05:04,237 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:04,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash -679342832, now seen corresponding path program 1 times [2020-11-22 13:05:04,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:04,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316009796] [2020-11-22 13:05:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-22 13:05:04,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316009796] [2020-11-22 13:05:04,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:04,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:04,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241625331] [2020-11-22 13:05:04,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:04,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:04,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:04,402 INFO L87 Difference]: Start difference. First operand 2291 states and 3940 transitions. Second operand 3 states. [2020-11-22 13:05:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:05,564 INFO L93 Difference]: Finished difference Result 5725 states and 9785 transitions. [2020-11-22 13:05:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:05,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-22 13:05:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:05,585 INFO L225 Difference]: With dead ends: 5725 [2020-11-22 13:05:05,586 INFO L226 Difference]: Without dead ends: 3435 [2020-11-22 13:05:05,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2020-11-22 13:05:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2020-11-22 13:05:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-11-22 13:05:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 5500 transitions. [2020-11-22 13:05:05,690 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 5500 transitions. Word has length 171 [2020-11-22 13:05:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:05,692 INFO L481 AbstractCegarLoop]: Abstraction has 3435 states and 5500 transitions. [2020-11-22 13:05:05,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 5500 transitions. [2020-11-22 13:05:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-22 13:05:05,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:05,699 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:05,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:05:05,699 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:05,701 INFO L82 PathProgramCache]: Analyzing trace with hash -337378012, now seen corresponding path program 1 times [2020-11-22 13:05:05,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:05,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463198447] [2020-11-22 13:05:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:05,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463198447] [2020-11-22 13:05:05,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936359090] [2020-11-22 13:05:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/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 [2020-11-22 13:05:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:06,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:06,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-22 13:05:06,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-22 13:05:06,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:06,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-22 13:05:06,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208436420] [2020-11-22 13:05:06,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:06,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:06,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:06,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:06,297 INFO L87 Difference]: Start difference. First operand 3435 states and 5500 transitions. Second operand 3 states. [2020-11-22 13:05:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:07,725 INFO L93 Difference]: Finished difference Result 8871 states and 14497 transitions. [2020-11-22 13:05:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:07,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-22 13:05:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:07,761 INFO L225 Difference]: With dead ends: 8871 [2020-11-22 13:05:07,762 INFO L226 Difference]: Without dead ends: 5437 [2020-11-22 13:05:07,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2020-11-22 13:05:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2020-11-22 13:05:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5437 states. [2020-11-22 13:05:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8766 transitions. [2020-11-22 13:05:07,903 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8766 transitions. Word has length 181 [2020-11-22 13:05:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:07,905 INFO L481 AbstractCegarLoop]: Abstraction has 5437 states and 8766 transitions. [2020-11-22 13:05:07,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8766 transitions. [2020-11-22 13:05:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-22 13:05:07,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:07,915 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:08,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-22 13:05:08,124 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:08,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -719392019, now seen corresponding path program 1 times [2020-11-22 13:05:08,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:08,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222225138] [2020-11-22 13:05:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:08,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222225138] [2020-11-22 13:05:08,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:08,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:08,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517920759] [2020-11-22 13:05:08,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:08,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:08,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:08,240 INFO L87 Difference]: Start difference. First operand 5437 states and 8766 transitions. Second operand 4 states. [2020-11-22 13:05:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:09,943 INFO L93 Difference]: Finished difference Result 11445 states and 18452 transitions. [2020-11-22 13:05:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:09,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2020-11-22 13:05:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:09,978 INFO L225 Difference]: With dead ends: 11445 [2020-11-22 13:05:09,978 INFO L226 Difference]: Without dead ends: 6009 [2020-11-22 13:05:09,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6009 states. [2020-11-22 13:05:10,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6009 to 5437. [2020-11-22 13:05:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5437 states. [2020-11-22 13:05:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8766 transitions. [2020-11-22 13:05:10,114 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8766 transitions. Word has length 187 [2020-11-22 13:05:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:10,114 INFO L481 AbstractCegarLoop]: Abstraction has 5437 states and 8766 transitions. [2020-11-22 13:05:10,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8766 transitions. [2020-11-22 13:05:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-22 13:05:10,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:10,124 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:10,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:05:10,124 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:10,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:10,125 INFO L82 PathProgramCache]: Analyzing trace with hash -680215576, now seen corresponding path program 1 times [2020-11-22 13:05:10,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:10,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731971380] [2020-11-22 13:05:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 13:05:10,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731971380] [2020-11-22 13:05:10,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946797840] [2020-11-22 13:05:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/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 [2020-11-22 13:05:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:10,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-22 13:05:10,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-22 13:05:10,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:10,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-22 13:05:10,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234888230] [2020-11-22 13:05:10,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:10,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:10,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:10,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:10,596 INFO L87 Difference]: Start difference. First operand 5437 states and 8766 transitions. Second operand 3 states. [2020-11-22 13:05:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:11,164 INFO L93 Difference]: Finished difference Result 10873 states and 17531 transitions. [2020-11-22 13:05:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:11,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-11-22 13:05:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:11,210 INFO L225 Difference]: With dead ends: 10873 [2020-11-22 13:05:11,210 INFO L226 Difference]: Without dead ends: 5437 [2020-11-22 13:05:11,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2020-11-22 13:05:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2020-11-22 13:05:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5437 states. [2020-11-22 13:05:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8578 transitions. [2020-11-22 13:05:11,381 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8578 transitions. Word has length 194 [2020-11-22 13:05:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:11,382 INFO L481 AbstractCegarLoop]: Abstraction has 5437 states and 8578 transitions. [2020-11-22 13:05:11,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8578 transitions. [2020-11-22 13:05:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-11-22 13:05:11,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:11,391 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:11,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:11,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:11,607 INFO L82 PathProgramCache]: Analyzing trace with hash -817746540, now seen corresponding path program 1 times [2020-11-22 13:05:11,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:11,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82726490] [2020-11-22 13:05:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-11-22 13:05:11,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82726490] [2020-11-22 13:05:11,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:11,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:11,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029024373] [2020-11-22 13:05:11,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:11,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:11,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:11,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:11,715 INFO L87 Difference]: Start difference. First operand 5437 states and 8578 transitions. Second operand 3 states. [2020-11-22 13:05:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:12,607 INFO L93 Difference]: Finished difference Result 14734 states and 23126 transitions. [2020-11-22 13:05:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:12,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-11-22 13:05:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:12,627 INFO L225 Difference]: With dead ends: 14734 [2020-11-22 13:05:12,628 INFO L226 Difference]: Without dead ends: 9298 [2020-11-22 13:05:12,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2020-11-22 13:05:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 9298. [2020-11-22 13:05:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9298 states. [2020-11-22 13:05:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 13794 transitions. [2020-11-22 13:05:12,846 INFO L78 Accepts]: Start accepts. Automaton has 9298 states and 13794 transitions. Word has length 218 [2020-11-22 13:05:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:12,846 INFO L481 AbstractCegarLoop]: Abstraction has 9298 states and 13794 transitions. [2020-11-22 13:05:12,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9298 states and 13794 transitions. [2020-11-22 13:05:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-11-22 13:05:12,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:12,860 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:12,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 13:05:12,861 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1871238428, now seen corresponding path program 1 times [2020-11-22 13:05:12,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:12,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458785631] [2020-11-22 13:05:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-22 13:05:12,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458785631] [2020-11-22 13:05:12,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:12,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:12,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656362374] [2020-11-22 13:05:12,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:12,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:12,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:12,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:12,982 INFO L87 Difference]: Start difference. First operand 9298 states and 13794 transitions. Second operand 3 states. [2020-11-22 13:05:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:14,066 INFO L93 Difference]: Finished difference Result 21598 states and 32435 transitions. [2020-11-22 13:05:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:14,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-11-22 13:05:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:14,093 INFO L225 Difference]: With dead ends: 21598 [2020-11-22 13:05:14,093 INFO L226 Difference]: Without dead ends: 12301 [2020-11-22 13:05:14,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2020-11-22 13:05:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 12301. [2020-11-22 13:05:14,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12301 states. [2020-11-22 13:05:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12301 states to 12301 states and 18010 transitions. [2020-11-22 13:05:14,354 INFO L78 Accepts]: Start accepts. Automaton has 12301 states and 18010 transitions. Word has length 225 [2020-11-22 13:05:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:14,355 INFO L481 AbstractCegarLoop]: Abstraction has 12301 states and 18010 transitions. [2020-11-22 13:05:14,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12301 states and 18010 transitions. [2020-11-22 13:05:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-11-22 13:05:14,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:14,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:14,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:05:14,379 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:14,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:14,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1404425282, now seen corresponding path program 1 times [2020-11-22 13:05:14,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:14,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920212941] [2020-11-22 13:05:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:14,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920212941] [2020-11-22 13:05:14,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:14,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:14,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722598692] [2020-11-22 13:05:14,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:14,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:14,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:14,648 INFO L87 Difference]: Start difference. First operand 12301 states and 18010 transitions. Second operand 3 states. [2020-11-22 13:05:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:15,521 INFO L93 Difference]: Finished difference Result 28462 states and 41394 transitions. [2020-11-22 13:05:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:15,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2020-11-22 13:05:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:15,553 INFO L225 Difference]: With dead ends: 28462 [2020-11-22 13:05:15,553 INFO L226 Difference]: Without dead ends: 16162 [2020-11-22 13:05:15,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16162 states. [2020-11-22 13:05:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16162 to 15304. [2020-11-22 13:05:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15304 states. [2020-11-22 13:05:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15304 states to 15304 states and 22058 transitions. [2020-11-22 13:05:15,825 INFO L78 Accepts]: Start accepts. Automaton has 15304 states and 22058 transitions. Word has length 267 [2020-11-22 13:05:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:15,826 INFO L481 AbstractCegarLoop]: Abstraction has 15304 states and 22058 transitions. [2020-11-22 13:05:15,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15304 states and 22058 transitions. [2020-11-22 13:05:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-22 13:05:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:15,846 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:15,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:05:15,846 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:15,850 INFO L82 PathProgramCache]: Analyzing trace with hash -969740483, now seen corresponding path program 1 times [2020-11-22 13:05:15,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:15,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993643085] [2020-11-22 13:05:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:16,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993643085] [2020-11-22 13:05:16,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708421100] [2020-11-22 13:05:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/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 [2020-11-22 13:05:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:16,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:16,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-22 13:05:16,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-22 13:05:16,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:16,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-22 13:05:16,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362494133] [2020-11-22 13:05:16,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:16,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:16,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:16,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:16,973 INFO L87 Difference]: Start difference. First operand 15304 states and 22058 transitions. Second operand 4 states. [2020-11-22 13:05:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:18,885 INFO L93 Difference]: Finished difference Result 35181 states and 50933 transitions. [2020-11-22 13:05:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:05:18,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2020-11-22 13:05:18,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:18,886 INFO L225 Difference]: With dead ends: 35181 [2020-11-22 13:05:18,886 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:18,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:18,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2020-11-22 13:05:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:18,908 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:18,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:18,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:19,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-22 13:05:19,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:19,398 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-22 13:05:19,562 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L1555(line 1555) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,565 INFO L274 CegarLoopResult]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,566 INFO L274 CegarLoopResult]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,567 INFO L274 CegarLoopResult]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,568 INFO L274 CegarLoopResult]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,569 INFO L274 CegarLoopResult]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,570 INFO L274 CegarLoopResult]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,571 INFO L274 CegarLoopResult]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,571 INFO L274 CegarLoopResult]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,571 INFO L274 CegarLoopResult]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,571 INFO L274 CegarLoopResult]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,571 INFO L274 CegarLoopResult]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,571 INFO L274 CegarLoopResult]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L270 CegarLoopResult]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse0 (= ~a5~0 1)) (.cse1 (= ~a27~0 1)) (.cse2 (= ~a26~0 1))) (or (and .cse0 (<= ~a12~0 0) (or .cse1 .cse2)) (and .cse0 (<= 1 ~a3~0)) (and (= ~a12~0 1) .cse0) (and .cse0 (or (and .cse1 (= ~a26~0 0)) (and .cse2 (= ~a27~0 0)))) (and .cse0 .cse1 .cse2))) [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L277 CegarLoopResult]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,572 INFO L274 CegarLoopResult]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,573 INFO L274 CegarLoopResult]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L270 CegarLoopResult]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse0 (= ~a5~0 1)) (.cse1 (= ~a27~0 1)) (.cse2 (= ~a26~0 1))) (or (and .cse0 (<= ~a12~0 0) (or .cse1 .cse2)) (and .cse0 (<= 1 ~a3~0)) (and (= ~a12~0 1) .cse0) (and .cse0 (or (and .cse1 (= ~a26~0 0)) (and .cse2 (= ~a27~0 0)))) (and .cse0 .cse1 .cse2))) [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,574 INFO L274 CegarLoopResult]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L1673(line 1673) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,575 INFO L274 CegarLoopResult]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,576 INFO L274 CegarLoopResult]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,577 INFO L274 CegarLoopResult]: For program point L1551-1(lines 64 1660) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2020-11-22 13:05:19,578 INFO L274 CegarLoopResult]: For program point L1554-1(lines 64 1660) no Hoare annotation was computed. [2020-11-22 13:05:19,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:19 BoogieIcfgContainer [2020-11-22 13:05:19,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:19,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:19,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:19,596 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:19,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:04:59" (3/4) ... [2020-11-22 13:05:19,600 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:19,637 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2020-11-22 13:05:19,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:05:19,645 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:05:19,650 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:05:19,895 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f15119cb-a4a9-4a17-b0c0-dd85558b69f5/bin/utaipan/witness.graphml [2020-11-22 13:05:19,895 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:19,897 INFO L168 Benchmark]: Toolchain (without parser) took 25814.53 ms. Allocated memory was 79.7 MB in the beginning and 901.8 MB in the end (delta: 822.1 MB). Free memory was 59.3 MB in the beginning and 762.2 MB in the end (delta: -702.9 MB). Peak memory consumption was 119.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,898 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 53.1 MB in the beginning and 53.1 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:19,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1066.21 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 59.3 MB in the beginning and 55.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 153.08 ms. Allocated memory is still 100.7 MB. Free memory was 55.0 MB in the beginning and 40.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,899 INFO L168 Benchmark]: Boogie Preprocessor took 148.82 ms. Allocated memory is still 100.7 MB. Free memory was 40.8 MB in the beginning and 60.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,900 INFO L168 Benchmark]: RCFGBuilder took 3552.40 ms. Allocated memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: 71.3 MB). Free memory was 60.6 MB in the beginning and 116.5 MB in the end (delta: -55.9 MB). Peak memory consumption was 82.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,900 INFO L168 Benchmark]: TraceAbstraction took 20586.05 ms. Allocated memory was 172.0 MB in the beginning and 901.8 MB in the end (delta: 729.8 MB). Free memory was 116.5 MB in the beginning and 800.4 MB in the end (delta: -683.9 MB). Peak memory consumption was 423.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,900 INFO L168 Benchmark]: Witness Printer took 299.76 ms. Allocated memory is still 901.8 MB. Free memory was 800.4 MB in the beginning and 762.2 MB in the end (delta: 38.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:19,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 53.1 MB in the beginning and 53.1 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1066.21 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 59.3 MB in the beginning and 55.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 153.08 ms. Allocated memory is still 100.7 MB. Free memory was 55.0 MB in the beginning and 40.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 148.82 ms. Allocated memory is still 100.7 MB. Free memory was 40.8 MB in the beginning and 60.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3552.40 ms. Allocated memory was 100.7 MB in the beginning and 172.0 MB in the end (delta: 71.3 MB). Free memory was 60.6 MB in the beginning and 116.5 MB in the end (delta: -55.9 MB). Peak memory consumption was 82.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20586.05 ms. Allocated memory was 172.0 MB in the beginning and 901.8 MB in the end (delta: 729.8 MB). Free memory was 116.5 MB in the beginning and 800.4 MB in the end (delta: -683.9 MB). Peak memory consumption was 423.4 MB. Max. memory is 16.1 GB. * Witness Printer took 299.76 ms. Allocated memory is still 901.8 MB. Free memory was 800.4 MB in the beginning and 762.2 MB in the end (delta: 38.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: (((((a5 == 1 && a12 <= 0) && (a27 == 1 || a26 == 1)) || (a5 == 1 && 1 <= a3)) || (a12 == 1 && a5 == 1)) || (a5 == 1 && ((a27 == 1 && a26 == 0) || (a26 == 1 && a27 == 0)))) || ((a5 == 1 && a27 == 1) && a26 == 1) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((((a5 == 1 && a12 <= 0) && (a27 == 1 || a26 == 1)) || (a5 == 1 && 1 <= a3)) || (a12 == 1 && a5 == 1)) || (a5 == 1 && ((a27 == 1 && a26 == 0) || (a26 == 1 && a27 == 0)))) || ((a5 == 1 && a27 == 1) && a26 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.0s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1263 SDtfs, 1644 SDslu, 223 SDs, 0 SdLazy, 5883 SolverSat, 1398 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1323 GetRequests, 1302 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15304occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1432 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 217 NumberOfFragments, 117 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4916 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2973 NumberOfCodeBlocks, 2973 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3604 ConstructedInterpolants, 0 QuantifiedInterpolants, 2320069 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1385 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 1214/1232 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...