./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label29.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_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label29.c -s /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/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 5ed5f96ec62512a1ce27f5120a7de01f72ef15e0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:36:07,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:36:07,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:36:07,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:36:07,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:36:07,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:36:07,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:36:07,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:36:07,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:36:07,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:36:07,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:36:07,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:36:07,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:36:07,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:36:07,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:36:07,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:36:07,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:36:07,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:36:07,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:36:07,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:36:07,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:36:07,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:36:07,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:36:07,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:36:07,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:36:07,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:36:07,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:36:07,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:36:07,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:36:07,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:36:07,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:36:07,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:36:07,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:36:07,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:36:07,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:36:07,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:36:07,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:36:07,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:36:07,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:36:07,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:36:07,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:36:07,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:36:07,834 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:36:07,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:36:07,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:36:07,836 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:36:07,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:36:07,837 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:36:07,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:36:07,838 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:36:07,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:36:07,838 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:36:07,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:36:07,839 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:36:07,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:36:07,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:36:07,840 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:36:07,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:36:07,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:36:07,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:36:07,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:36:07,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:36:07,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:36:07,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:36:07,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:36:07,844 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:36:07,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:36:07,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:36:07,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:36:07,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:36:07,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:36:07,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:36:07,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:36:07,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:36:07,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:36:07,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:36:07,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:36:07,849 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:36:07,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:36:07,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:36:07,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:36:07,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:36:07,851 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_64eb453c-f663-4fcc-b836-f1ea973ce873/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ed5f96ec62512a1ce27f5120a7de01f72ef15e0 [2020-11-28 07:36:08,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:36:08,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:36:08,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:36:08,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:36:08,232 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:36:08,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label29.c [2020-11-28 07:36:08,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/data/e505a5388/20e0cfc474274318963401babe60dd54/FLAG20cc44a4a [2020-11-28 07:36:09,074 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:36:09,075 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/sv-benchmarks/c/eca-rers2012/Problem02_label29.c [2020-11-28 07:36:09,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/data/e505a5388/20e0cfc474274318963401babe60dd54/FLAG20cc44a4a [2020-11-28 07:36:09,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/data/e505a5388/20e0cfc474274318963401babe60dd54 [2020-11-28 07:36:09,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:36:09,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:36:09,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:36:09,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:36:09,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:36:09,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:36:09" (1/1) ... [2020-11-28 07:36:09,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9099170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:09, skipping insertion in model container [2020-11-28 07:36:09,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:36:09" (1/1) ... [2020-11-28 07:36:09,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:36:09,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:36:10,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:36:10,028 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:36:10,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:36:10,227 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:36:10,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10 WrapperNode [2020-11-28 07:36:10,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:36:10,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:36:10,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:36:10,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:36:10,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:36:10,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:36:10,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:36:10,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:36:10,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... [2020-11-28 07:36:10,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:36:10,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:36:10,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:36:10,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:36:10,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/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 [2020-11-28 07:36:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:36:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:36:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:36:10,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:36:13,882 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:36:13,883 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:36:13,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:13 BoogieIcfgContainer [2020-11-28 07:36:13,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:36:13,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:36:13,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:36:13,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:36:13,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:36:09" (1/3) ... [2020-11-28 07:36:13,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d19f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:13, skipping insertion in model container [2020-11-28 07:36:13,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:36:10" (2/3) ... [2020-11-28 07:36:13,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d19f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:36:13, skipping insertion in model container [2020-11-28 07:36:13,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:13" (3/3) ... [2020-11-28 07:36:13,900 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-11-28 07:36:13,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:36:13,919 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:36:13,934 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:36:13,963 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:36:13,963 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:36:13,964 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:36:13,964 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:36:13,964 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:36:13,964 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:36:13,964 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:36:13,964 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:36:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:36:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:36:14,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:14,001 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] [2020-11-28 07:36:14,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:14,008 INFO L82 PathProgramCache]: Analyzing trace with hash -216554425, now seen corresponding path program 1 times [2020-11-28 07:36:14,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:14,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232656877] [2020-11-28 07:36:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:14,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232656877] [2020-11-28 07:36:14,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:14,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:14,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962169887] [2020-11-28 07:36:14,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:14,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:14,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:14,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:14,512 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:36:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:15,441 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:36:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:15,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:36:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:15,458 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:36:15,459 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:36:15,462 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 [2020-11-28 07:36:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:36:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:36:15,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:36:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-28 07:36:15,548 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-28 07:36:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:15,549 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-28 07:36:15,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-28 07:36:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-28 07:36:15,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:15,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:15,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:36:15,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:15,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1992964614, now seen corresponding path program 1 times [2020-11-28 07:36:15,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:15,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451606028] [2020-11-28 07:36:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:15,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451606028] [2020-11-28 07:36:15,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:15,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:15,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968171238] [2020-11-28 07:36:15,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:15,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:15,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:15,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:15,686 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-28 07:36:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:16,265 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-28 07:36:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:16,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-28 07:36:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:16,270 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:36:16,270 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:36:16,278 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 [2020-11-28 07:36:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:36:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:36:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:36:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-28 07:36:16,320 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-28 07:36:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:16,320 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-28 07:36:16,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-28 07:36:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 07:36:16,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:16,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-11-28 07:36:16,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:36:16,330 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1654448299, now seen corresponding path program 1 times [2020-11-28 07:36:16,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:16,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73874257] [2020-11-28 07:36:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:16,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73874257] [2020-11-28 07:36:16,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002985426] [2020-11-28 07:36:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/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 [2020-11-28 07:36:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:16,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:36:16,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:36:16,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:36:16,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:36:16,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-28 07:36:16,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629781349] [2020-11-28 07:36:16,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:16,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:16,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:16,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:36:16,787 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-28 07:36:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:17,395 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-28 07:36:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:17,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 07:36:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:17,401 INFO L225 Difference]: With dead ends: 565 [2020-11-28 07:36:17,402 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:36:17,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:36:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:36:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-28 07:36:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:36:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-28 07:36:17,454 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-28 07:36:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:17,454 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-28 07:36:17,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-28 07:36:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-28 07:36:17,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:17,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:36:17,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:36:17,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:17,677 INFO L82 PathProgramCache]: Analyzing trace with hash -215866351, now seen corresponding path program 1 times [2020-11-28 07:36:17,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:17,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059960025] [2020-11-28 07:36:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:17,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059960025] [2020-11-28 07:36:17,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:17,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:17,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064757403] [2020-11-28 07:36:17,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:17,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:17,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:17,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:17,774 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-28 07:36:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:18,066 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-28 07:36:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:18,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-28 07:36:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:18,069 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:36:18,069 INFO L226 Difference]: Without dead ends: 403 [2020-11-28 07:36:18,072 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 [2020-11-28 07:36:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-28 07:36:18,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-28 07:36:18,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-28 07:36:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-28 07:36:18,104 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-28 07:36:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:18,106 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-28 07:36:18,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-28 07:36:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-28 07:36:18,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:18,110 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:18,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:36:18,110 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:18,117 INFO L82 PathProgramCache]: Analyzing trace with hash 441514067, now seen corresponding path program 1 times [2020-11-28 07:36:18,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:18,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654132543] [2020-11-28 07:36:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:36:18,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654132543] [2020-11-28 07:36:18,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:18,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:36:18,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404820748] [2020-11-28 07:36:18,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:18,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:18,261 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-28 07:36:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:18,796 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-28 07:36:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:18,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-28 07:36:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:18,802 INFO L225 Difference]: With dead ends: 885 [2020-11-28 07:36:18,802 INFO L226 Difference]: Without dead ends: 563 [2020-11-28 07:36:18,805 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 [2020-11-28 07:36:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-28 07:36:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-28 07:36:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-28 07:36:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-28 07:36:18,831 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-28 07:36:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:18,832 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-28 07:36:18,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-28 07:36:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-28 07:36:18,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:18,836 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:36:18,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:36:18,836 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1831491043, now seen corresponding path program 1 times [2020-11-28 07:36:18,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:18,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135045017] [2020-11-28 07:36:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-28 07:36:18,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135045017] [2020-11-28 07:36:18,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821754776] [2020-11-28 07:36:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/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 [2020-11-28 07:36:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:19,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:36:19,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:36:19,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 07:36:19,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:36:19,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:36:19,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347334767] [2020-11-28 07:36:19,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:19,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:19,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:19,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:36:19,182 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-28 07:36:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:19,743 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-11-28 07:36:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:19,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-28 07:36:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:19,750 INFO L225 Difference]: With dead ends: 1365 [2020-11-28 07:36:19,751 INFO L226 Difference]: Without dead ends: 883 [2020-11-28 07:36:19,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:36:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-28 07:36:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-11-28 07:36:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-28 07:36:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-11-28 07:36:19,789 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-11-28 07:36:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:19,790 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-11-28 07:36:19,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-11-28 07:36:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-28 07:36:19,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:19,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:36:20,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:20,008 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:20,009 INFO L82 PathProgramCache]: Analyzing trace with hash -834481601, now seen corresponding path program 1 times [2020-11-28 07:36:20,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:20,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505024531] [2020-11-28 07:36:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 07:36:20,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505024531] [2020-11-28 07:36:20,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:20,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:20,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203673071] [2020-11-28 07:36:20,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:20,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:20,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:20,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:20,157 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 3 states. [2020-11-28 07:36:20,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:20,593 INFO L93 Difference]: Finished difference Result 1765 states and 2375 transitions. [2020-11-28 07:36:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:20,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-11-28 07:36:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:20,600 INFO L225 Difference]: With dead ends: 1765 [2020-11-28 07:36:20,600 INFO L226 Difference]: Without dead ends: 803 [2020-11-28 07:36:20,602 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 [2020-11-28 07:36:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-28 07:36:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-11-28 07:36:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-28 07:36:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 955 transitions. [2020-11-28 07:36:20,631 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 955 transitions. Word has length 135 [2020-11-28 07:36:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:20,631 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 955 transitions. [2020-11-28 07:36:20,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 955 transitions. [2020-11-28 07:36:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-28 07:36:20,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:20,635 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:36:20,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:36:20,635 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash -788649207, now seen corresponding path program 1 times [2020-11-28 07:36:20,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:20,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711256323] [2020-11-28 07:36:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 07:36:20,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711256323] [2020-11-28 07:36:20,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:36:20,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:36:20,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313300350] [2020-11-28 07:36:20,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:36:20,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:20,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:36:20,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:36:20,752 INFO L87 Difference]: Start difference. First operand 803 states and 955 transitions. Second operand 3 states. [2020-11-28 07:36:21,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:21,153 INFO L93 Difference]: Finished difference Result 1525 states and 1825 transitions. [2020-11-28 07:36:21,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:36:21,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-28 07:36:21,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:21,159 INFO L225 Difference]: With dead ends: 1525 [2020-11-28 07:36:21,159 INFO L226 Difference]: Without dead ends: 723 [2020-11-28 07:36:21,160 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 [2020-11-28 07:36:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-28 07:36:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-28 07:36:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-28 07:36:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 823 transitions. [2020-11-28 07:36:21,184 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 823 transitions. Word has length 139 [2020-11-28 07:36:21,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:21,186 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 823 transitions. [2020-11-28 07:36:21,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:36:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 823 transitions. [2020-11-28 07:36:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-28 07:36:21,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:36:21,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:36:21,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:36:21,190 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:36:21,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:36:21,191 INFO L82 PathProgramCache]: Analyzing trace with hash -374632712, now seen corresponding path program 1 times [2020-11-28 07:36:21,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:36:21,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700479411] [2020-11-28 07:36:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:36:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:36:21,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700479411] [2020-11-28 07:36:21,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700821443] [2020-11-28 07:36:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/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 [2020-11-28 07:36:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:36:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:36:21,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:36:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:36:21,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:36:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 07:36:21,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:36:21,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-28 07:36:21,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694624653] [2020-11-28 07:36:21,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:36:21,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:36:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:36:21,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:36:21,979 INFO L87 Difference]: Start difference. First operand 723 states and 823 transitions. Second operand 4 states. [2020-11-28 07:36:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:36:22,583 INFO L93 Difference]: Finished difference Result 1683 states and 1942 transitions. [2020-11-28 07:36:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:36:22,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-11-28 07:36:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:36:22,584 INFO L225 Difference]: With dead ends: 1683 [2020-11-28 07:36:22,584 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:36:22,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:36:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:36:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:36:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:36:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:36:22,587 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-11-28 07:36:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:36:22,587 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:36:22,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:36:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:36:22,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:36:22,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:36:22,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:36:22,944 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2020-11-28 07:36:23,091 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2020-11-28 07:36:23,094 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:36:23,095 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:36:23,096 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:36:23,097 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:36:23,098 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:36:23,099 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:36:23,100 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:36:23,101 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:36:23,101 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:36:23,101 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse4 (= ~a19~0 1)) (.cse3 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and (= ~a25~0 0) .cse0 .cse1) (and (<= 9 ~a28~0) .cse2 .cse0 .cse1) (and .cse3 .cse2 .cse0 .cse1) (and (= ~a25~0 ~a11~0) .cse4 .cse2 (<= ~a28~0 7) .cse0) (and .cse4 .cse3 .cse2 .cse0) (and .cse4 (<= 10 ~a28~0) .cse3 .cse0 .cse1))) [2020-11-28 07:36:23,101 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:36:23,101 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:36:23,102 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:36:23,103 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:36:23,103 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a25~0 1)) (.cse4 (= ~a19~0 1)) (.cse3 (<= 8 ~a17~0)) (.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and (= ~a25~0 0) .cse0 .cse1) (and (<= 9 ~a28~0) .cse2 .cse0 .cse1) (and .cse3 .cse2 .cse0 .cse1) (and (= ~a25~0 ~a11~0) .cse4 .cse2 (<= ~a28~0 7) .cse0) (and .cse4 .cse3 .cse2 .cse0) (and .cse4 (<= 10 ~a28~0) .cse3 .cse0 .cse1))) [2020-11-28 07:36:23,103 INFO L274 CegarLoopResult]: For program point L484-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:36:23,103 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:36:23,103 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:36:23,103 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:36:23,103 INFO L274 CegarLoopResult]: For program point L487-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:36:23,104 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:36:23,105 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:36:23,105 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:36:23,105 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:36:23,105 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:36:23,105 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:36:23,105 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:36:23,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:36:23 BoogieIcfgContainer [2020-11-28 07:36:23,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:36:23,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:36:23,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:36:23,149 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:36:23,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:36:13" (3/4) ... [2020-11-28 07:36:23,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:36:23,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:36:23,187 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:36:23,188 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:36:23,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:36:23,372 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_64eb453c-f663-4fcc-b836-f1ea973ce873/bin/utaipan/witness.graphml [2020-11-28 07:36:23,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:36:23,373 INFO L168 Benchmark]: Toolchain (without parser) took 14073.35 ms. Allocated memory was 113.2 MB in the beginning and 291.5 MB in the end (delta: 178.3 MB). Free memory was 81.1 MB in the beginning and 234.4 MB in the end (delta: -153.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,374 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:36:23,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 924.84 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 75.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.45 ms. Allocated memory is still 113.2 MB. Free memory was 75.5 MB in the beginning and 69.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,375 INFO L168 Benchmark]: Boogie Preprocessor took 125.76 ms. Allocated memory is still 113.2 MB. Free memory was 69.8 MB in the beginning and 65.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,375 INFO L168 Benchmark]: RCFGBuilder took 3389.78 ms. Allocated memory was 113.2 MB in the beginning and 151.0 MB in the end (delta: 37.7 MB). Free memory was 65.6 MB in the beginning and 72.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,376 INFO L168 Benchmark]: TraceAbstraction took 9257.88 ms. Allocated memory was 151.0 MB in the beginning and 291.5 MB in the end (delta: 140.5 MB). Free memory was 72.0 MB in the beginning and 250.1 MB in the end (delta: -178.1 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,376 INFO L168 Benchmark]: Witness Printer took 223.75 ms. Allocated memory is still 291.5 MB. Free memory was 250.1 MB in the beginning and 234.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:36:23,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 79.7 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 924.84 ms. Allocated memory is still 113.2 MB. Free memory was 80.8 MB in the beginning and 75.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 138.45 ms. Allocated memory is still 113.2 MB. Free memory was 75.5 MB in the beginning and 69.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 125.76 ms. Allocated memory is still 113.2 MB. Free memory was 69.8 MB in the beginning and 65.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3389.78 ms. Allocated memory was 113.2 MB in the beginning and 151.0 MB in the end (delta: 37.7 MB). Free memory was 65.6 MB in the beginning and 72.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9257.88 ms. Allocated memory was 151.0 MB in the beginning and 291.5 MB in the end (delta: 140.5 MB). Free memory was 72.0 MB in the beginning and 250.1 MB in the end (delta: -178.1 MB). Peak memory consumption was 77.7 MB. Max. memory is 16.1 GB. * Witness Printer took 223.75 ms. Allocated memory is still 291.5 MB. Free memory was 250.1 MB in the beginning and 234.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a25 == 0 && a17 <= 8) && a28 <= 10) || (((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 0 && a17 <= 8) && a28 <= 10) || (((9 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a19 == 1) && a25 == 1) && a28 <= 7) && a17 <= 8)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8)) || ((((a19 == 1 && 10 <= a28) && 8 <= a17) && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 503 SDtfs, 574 SDslu, 56 SDs, 0 SdLazy, 2047 SolverSat, 487 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 799 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 165 HoareAnnotationTreeSize, 3 FomulaSimplifications, 458 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1440 NumberOfCodeBlocks, 1440 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1825 ConstructedInterpolants, 0 QuantifiedInterpolants, 700483 SizeOfPredicates, 3 NumberOfNonLiveVariables, 933 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 845/909 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...