./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Ackermann04.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_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Ackermann04.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5e57a3ac5bdb229178b6e3922e8ce89677cf2614 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:12:30,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:12:30,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:12:30,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:12:30,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:12:30,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:12:30,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:12:30,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:12:30,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:12:30,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:12:30,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:12:30,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:12:30,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:12:30,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:12:30,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:12:30,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:12:30,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:12:30,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:12:30,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:12:30,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:12:30,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:12:30,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:12:30,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:12:30,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:12:30,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:12:30,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:12:30,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:12:30,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:12:30,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:12:30,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:12:30,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:12:30,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:12:30,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:12:30,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:12:30,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:12:30,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:12:30,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:12:30,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:12:30,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:12:30,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:12:30,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:12:30,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:12:30,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:12:30,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:12:30,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:12:30,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:12:30,843 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:12:30,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:12:30,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:12:30,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:12:30,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:12:30,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:12:30,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:12:30,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:12:30,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:12:30,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:12:30,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:12:30,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:12:30,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:12:30,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:12:30,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:12:30,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:12:30,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:12:30,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:12:30,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:12:30,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:12:30,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:12:30,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:12:30,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:12:30,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:12:30,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:12:30,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e57a3ac5bdb229178b6e3922e8ce89677cf2614 [2020-11-28 03:12:31,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:12:31,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:12:31,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:12:31,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:12:31,243 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:12:31,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/../../sv-benchmarks/c/recursive/Ackermann04.c [2020-11-28 03:12:31,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/data/df25b20f2/d6933df6d9064474a97d357678f823e8/FLAG39d3b9c6b [2020-11-28 03:12:31,845 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:12:31,846 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/sv-benchmarks/c/recursive/Ackermann04.c [2020-11-28 03:12:31,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/data/df25b20f2/d6933df6d9064474a97d357678f823e8/FLAG39d3b9c6b [2020-11-28 03:12:32,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/data/df25b20f2/d6933df6d9064474a97d357678f823e8 [2020-11-28 03:12:32,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:12:32,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:12:32,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:32,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:12:32,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:12:32,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfaacf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32, skipping insertion in model container [2020-11-28 03:12:32,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:12:32,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:12:32,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:32,502 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:12:32,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:32,548 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:12:32,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32 WrapperNode [2020-11-28 03:12:32,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:32,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:32,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:12:32,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:12:32,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:32,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:12:32,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:12:32,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:12:32,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... [2020-11-28 03:12:32,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:12:32,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:12:32,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:12:32,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:12:32,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/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 03:12:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:12:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:12:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-11-28 03:12:32,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-11-28 03:12:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:12:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:12:33,002 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:12:33,003 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:12:33,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:33 BoogieIcfgContainer [2020-11-28 03:12:33,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:12:33,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:12:33,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:12:33,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:12:33,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:32" (1/3) ... [2020-11-28 03:12:33,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164f15c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:33, skipping insertion in model container [2020-11-28 03:12:33,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:32" (2/3) ... [2020-11-28 03:12:33,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164f15c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:33, skipping insertion in model container [2020-11-28 03:12:33,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:33" (3/3) ... [2020-11-28 03:12:33,029 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-11-28 03:12:33,058 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:12:33,066 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:12:33,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:12:33,121 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:12:33,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:12:33,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:12:33,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:12:33,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:12:33,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:12:33,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:12:33,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:12:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 03:12:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:12:33,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:33,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:33,162 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:33,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1799437593, now seen corresponding path program 1 times [2020-11-28 03:12:33,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:33,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215428765] [2020-11-28 03:12:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:33,566 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 03:12:33,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215428765] [2020-11-28 03:12:33,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:33,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:12:33,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47740034] [2020-11-28 03:12:33,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:12:33,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:12:33,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:12:33,599 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-11-28 03:12:33,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:33,755 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2020-11-28 03:12:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:12:33,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:12:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:33,766 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:12:33,767 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:12:33,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:12:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:12:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:12:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2020-11-28 03:12:33,846 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 12 [2020-11-28 03:12:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:33,847 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2020-11-28 03:12:33,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:12:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2020-11-28 03:12:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:12:33,854 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:33,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:33,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:12:33,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:33,857 INFO L82 PathProgramCache]: Analyzing trace with hash 335222435, now seen corresponding path program 1 times [2020-11-28 03:12:33,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:33,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622103813] [2020-11-28 03:12:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:33,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:33,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:12:33,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622103813] [2020-11-28 03:12:33,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491841380] [2020-11-28 03:12:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/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 03:12:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:12:34,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:12:34,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:34,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-28 03:12:34,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666404160] [2020-11-28 03:12:34,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:12:34,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:34,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:12:34,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:12:34,197 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 8 states. [2020-11-28 03:12:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:34,317 INFO L93 Difference]: Finished difference Result 49 states and 74 transitions. [2020-11-28 03:12:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:12:34,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-28 03:12:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:34,322 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:12:34,322 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:12:34,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:12:34,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:12:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:12:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:12:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-11-28 03:12:34,340 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 19 [2020-11-28 03:12:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:34,341 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-11-28 03:12:34,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:12:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-11-28 03:12:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:12:34,345 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:34,347 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:34,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:12:34,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1209780356, now seen corresponding path program 1 times [2020-11-28 03:12:34,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:34,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888528755] [2020-11-28 03:12:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:12:34,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888528755] [2020-11-28 03:12:34,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942048891] [2020-11-28 03:12:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/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 03:12:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:34,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:12:34,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:12:34,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:34,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-28 03:12:34,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059560477] [2020-11-28 03:12:34,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:12:34,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:34,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:12:34,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:12:34,964 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 8 states. [2020-11-28 03:12:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:35,187 INFO L93 Difference]: Finished difference Result 74 states and 134 transitions. [2020-11-28 03:12:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:12:35,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-11-28 03:12:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:35,191 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:12:35,192 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:12:35,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:12:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:12:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-28 03:12:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:12:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2020-11-28 03:12:35,228 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 32 [2020-11-28 03:12:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:35,229 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2020-11-28 03:12:35,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:12:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2020-11-28 03:12:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:12:35,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:35,237 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:35,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:35,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:35,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 578809375, now seen corresponding path program 2 times [2020-11-28 03:12:35,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:35,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230722981] [2020-11-28 03:12:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 03:12:35,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230722981] [2020-11-28 03:12:35,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770478326] [2020-11-28 03:12:35,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/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 03:12:35,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:12:35,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:12:35,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:12:35,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 03:12:35,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:35,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-28 03:12:35,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894431277] [2020-11-28 03:12:35,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:12:35,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:35,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:12:35,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:12:35,937 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand 8 states. [2020-11-28 03:12:36,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:36,132 INFO L93 Difference]: Finished difference Result 120 states and 227 transitions. [2020-11-28 03:12:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:12:36,134 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-11-28 03:12:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:36,137 INFO L225 Difference]: With dead ends: 120 [2020-11-28 03:12:36,137 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 03:12:36,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:12:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 03:12:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-11-28 03:12:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:12:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2020-11-28 03:12:36,172 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 45 [2020-11-28 03:12:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:36,173 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2020-11-28 03:12:36,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:12:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2020-11-28 03:12:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-28 03:12:36,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:36,187 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:36,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:36,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:36,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1534840636, now seen corresponding path program 3 times [2020-11-28 03:12:36,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:36,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382124366] [2020-11-28 03:12:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-11-28 03:12:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-11-28 03:12:36,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382124366] [2020-11-28 03:12:36,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576850573] [2020-11-28 03:12:36,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:37,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-28 03:12:37,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:12:37,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:12:37,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 98 proven. 19 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-11-28 03:12:37,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:37,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 18 [2020-11-28 03:12:37,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152253363] [2020-11-28 03:12:37,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:12:37,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:12:37,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:12:37,205 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 18 states. [2020-11-28 03:12:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:38,104 INFO L93 Difference]: Finished difference Result 119 states and 222 transitions. [2020-11-28 03:12:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:12:38,105 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-11-28 03:12:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:38,109 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:12:38,110 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:12:38,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=999, Unknown=0, NotChecked=0, Total=1260 [2020-11-28 03:12:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:12:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-11-28 03:12:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:12:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2020-11-28 03:12:38,141 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 79 [2020-11-28 03:12:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:38,142 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2020-11-28 03:12:38,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:12:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2020-11-28 03:12:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-28 03:12:38,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:38,148 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:38,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:38,373 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:38,374 INFO L82 PathProgramCache]: Analyzing trace with hash -113129588, now seen corresponding path program 4 times [2020-11-28 03:12:38,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:38,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738465559] [2020-11-28 03:12:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-11-28 03:12:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 153 proven. 289 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-11-28 03:12:39,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738465559] [2020-11-28 03:12:39,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763656462] [2020-11-28 03:12:39,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:39,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:12:39,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:12:39,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 03:12:39,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 475 proven. 114 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-11-28 03:12:39,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:39,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 18 [2020-11-28 03:12:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554277144] [2020-11-28 03:12:39,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:12:39,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:39,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:12:39,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:12:39,392 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand 18 states. [2020-11-28 03:12:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:40,734 INFO L93 Difference]: Finished difference Result 135 states and 257 transitions. [2020-11-28 03:12:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-28 03:12:40,735 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 131 [2020-11-28 03:12:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:40,738 INFO L225 Difference]: With dead ends: 135 [2020-11-28 03:12:40,738 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:12:40,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=450, Invalid=1712, Unknown=0, NotChecked=0, Total=2162 [2020-11-28 03:12:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:12:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-11-28 03:12:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 03:12:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2020-11-28 03:12:40,780 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 131 [2020-11-28 03:12:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:40,786 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2020-11-28 03:12:40,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:12:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2020-11-28 03:12:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-28 03:12:40,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:40,793 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:41,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:12:41,011 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1068197804, now seen corresponding path program 5 times [2020-11-28 03:12:41,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:41,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412503182] [2020-11-28 03:12:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-28 03:12:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-11-28 03:12:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-28 03:12:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 258 proven. 609 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2020-11-28 03:12:41,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412503182] [2020-11-28 03:12:41,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308329985] [2020-11-28 03:12:41,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:42,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-11-28 03:12:42,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:12:42,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 45 conjunts are in the unsatisfiable core [2020-11-28 03:12:42,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 972 proven. 226 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2020-11-28 03:12:42,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:42,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2020-11-28 03:12:42,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55202928] [2020-11-28 03:12:42,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-28 03:12:42,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:42,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-28 03:12:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2020-11-28 03:12:42,532 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand 30 states. [2020-11-28 03:12:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:44,353 INFO L93 Difference]: Finished difference Result 176 states and 323 transitions. [2020-11-28 03:12:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-28 03:12:44,354 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 183 [2020-11-28 03:12:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:44,357 INFO L225 Difference]: With dead ends: 176 [2020-11-28 03:12:44,357 INFO L226 Difference]: Without dead ends: 110 [2020-11-28 03:12:44,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=460, Invalid=2732, Unknown=0, NotChecked=0, Total=3192 [2020-11-28 03:12:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-28 03:12:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2020-11-28 03:12:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 03:12:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 160 transitions. [2020-11-28 03:12:44,387 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 160 transitions. Word has length 183 [2020-11-28 03:12:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:44,388 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 160 transitions. [2020-11-28 03:12:44,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-28 03:12:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 160 transitions. [2020-11-28 03:12:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-11-28 03:12:44,398 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:44,398 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 18, 13, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:44,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:44,616 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:44,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1103077029, now seen corresponding path program 6 times [2020-11-28 03:12:44,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:44,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742480773] [2020-11-28 03:12:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-11-28 03:12:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:44,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-28 03:12:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-11-28 03:12:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-28 03:12:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-28 03:12:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 192 proven. 575 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2020-11-28 03:12:45,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742480773] [2020-11-28 03:12:45,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097437723] [2020-11-28 03:12:45,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:45,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-11-28 03:12:45,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:12:45,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:12:45,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 952 proven. 18 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2020-11-28 03:12:45,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:45,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-11-28 03:12:45,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284013779] [2020-11-28 03:12:45,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:12:45,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:45,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:12:45,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:12:45,512 INFO L87 Difference]: Start difference. First operand 107 states and 160 transitions. Second operand 11 states. [2020-11-28 03:12:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:45,794 INFO L93 Difference]: Finished difference Result 216 states and 392 transitions. [2020-11-28 03:12:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:12:45,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2020-11-28 03:12:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:45,798 INFO L225 Difference]: With dead ends: 216 [2020-11-28 03:12:45,798 INFO L226 Difference]: Without dead ends: 114 [2020-11-28 03:12:45,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:12:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-28 03:12:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-11-28 03:12:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-28 03:12:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 156 transitions. [2020-11-28 03:12:45,837 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 156 transitions. Word has length 210 [2020-11-28 03:12:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:45,837 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 156 transitions. [2020-11-28 03:12:45,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:12:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 156 transitions. [2020-11-28 03:12:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-11-28 03:12:45,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:45,844 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:46,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:46,071 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:46,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1207590662, now seen corresponding path program 7 times [2020-11-28 03:12:46,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:46,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374337627] [2020-11-28 03:12:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-28 03:12:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-28 03:12:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-11-28 03:12:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:47,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-11-28 03:12:47,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374337627] [2020-11-28 03:12:47,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478563956] [2020-11-28 03:12:47,096 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:47,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-28 03:12:47,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-11-28 03:12:47,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:47,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 26 [2020-11-28 03:12:47,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439469599] [2020-11-28 03:12:47,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-28 03:12:47,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-28 03:12:47,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2020-11-28 03:12:47,437 INFO L87 Difference]: Start difference. First operand 106 states and 156 transitions. Second operand 26 states. [2020-11-28 03:12:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:49,083 INFO L93 Difference]: Finished difference Result 183 states and 348 transitions. [2020-11-28 03:12:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-28 03:12:49,084 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 183 [2020-11-28 03:12:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:49,089 INFO L225 Difference]: With dead ends: 183 [2020-11-28 03:12:49,089 INFO L226 Difference]: Without dead ends: 179 [2020-11-28 03:12:49,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2020-11-28 03:12:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-28 03:12:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 120. [2020-11-28 03:12:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 03:12:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 192 transitions. [2020-11-28 03:12:49,125 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 192 transitions. Word has length 183 [2020-11-28 03:12:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:49,126 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 192 transitions. [2020-11-28 03:12:49,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-28 03:12:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 192 transitions. [2020-11-28 03:12:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-11-28 03:12:49,139 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:49,139 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:49,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 03:12:49,352 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:49,352 INFO L82 PathProgramCache]: Analyzing trace with hash 810495023, now seen corresponding path program 8 times [2020-11-28 03:12:49,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:49,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516410077] [2020-11-28 03:12:49,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-28 03:12:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-11-28 03:12:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-28 03:12:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-28 03:12:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-28 03:12:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-28 03:12:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-28 03:12:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-28 03:12:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-11-28 03:12:50,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516410077] [2020-11-28 03:12:50,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446605307] [2020-11-28 03:12:50,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:50,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:12:50,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:12:50,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-28 03:12:50,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2020-11-28 03:12:50,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:12:50,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 25 [2020-11-28 03:12:50,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022870616] [2020-11-28 03:12:50,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-28 03:12:50,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:12:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-28 03:12:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-11-28 03:12:50,613 INFO L87 Difference]: Start difference. First operand 120 states and 192 transitions. Second operand 25 states. [2020-11-28 03:12:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:52,088 INFO L93 Difference]: Finished difference Result 241 states and 451 transitions. [2020-11-28 03:12:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-28 03:12:52,089 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 170 [2020-11-28 03:12:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:52,090 INFO L225 Difference]: With dead ends: 241 [2020-11-28 03:12:52,090 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:12:52,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=670, Invalid=3236, Unknown=0, NotChecked=0, Total=3906 [2020-11-28 03:12:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:12:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:12:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:12:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:12:52,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2020-11-28 03:12:52,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:52,095 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:12:52,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-28 03:12:52,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:12:52,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:12:52,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:12:52,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:12:53,840 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 10 [2020-11-28 03:12:55,049 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 120 DAG size of output: 50 [2020-11-28 03:12:55,204 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 10 [2020-11-28 03:12:55,227 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:12:55,228 INFO L274 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-11-28 03:12:55,228 INFO L277 CegarLoopResult]: At program point L27(lines 27 47) the Hoare annotation is: true [2020-11-28 03:12:55,228 INFO L274 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-11-28 03:12:55,228 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:12:55,228 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:12:55,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:12:55,228 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:12:55,229 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:12:55,229 INFO L274 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-11-28 03:12:55,229 INFO L277 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: true [2020-11-28 03:12:55,229 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-11-28 03:12:55,229 INFO L274 CegarLoopResult]: For program point L35(lines 35 40) no Hoare annotation was computed. [2020-11-28 03:12:55,229 INFO L274 CegarLoopResult]: For program point ackermannEXIT(lines 16 24) no Hoare annotation was computed. [2020-11-28 03:12:55,229 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (not (= |ackermann_#in~n| 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-11-28 03:12:55,230 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-11-28 03:12:55,230 INFO L277 CegarLoopResult]: At program point ackermannENTRY(lines 16 24) the Hoare annotation is: true [2020-11-28 03:12:55,230 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-11-28 03:12:55,230 INFO L270 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (<= 5 |ackermann_#t~ret8|)) (.cse6 (<= |ackermann_#in~n| 1)) (.cse5 (<= |ackermann_#in~m| 1)) (.cse1 (not (<= 1 |ackermann_#in~m|))) (.cse2 (<= 2 |ackermann_#in~m|)) (.cse7 (= |ackermann_#in~m| 0))) (and (or (and .cse0 (<= |ackermann_#in~n| 4)) (<= 6 |ackermann_#t~ret8|) (and (<= |ackermann_#in~n| 3) (<= 4 |ackermann_#t~ret8|)) (<= |ackermann_#in~n| 2) .cse1 .cse2) (let ((.cse3 (= ackermann_~m |ackermann_#in~m|)) (.cse4 (= ackermann_~n |ackermann_#in~n|))) (or (and .cse3 .cse0 .cse4) (and .cse5 .cse3 .cse4) (and .cse6 .cse3 .cse4))) (or (and .cse0 .cse2) (and .cse6 (<= 3 |ackermann_#t~ret8|)) (= |ackermann_#t~ret8| 3) (and .cse6 .cse5) (<= 3 |ackermann_#in~n|) .cse1) (or (= |ackermann_#t~ret8| 2) (<= 2 |ackermann_#in~n|) .cse1 .cse2) (or (not (<= |ackermann_#in~n| 0)) .cse7) (or (not (<= |ackermann_#in~m| 0)) .cse7))) [2020-11-28 03:12:55,230 INFO L274 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-11-28 03:12:55,231 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-11-28 03:12:55,231 INFO L274 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-11-28 03:12:55,231 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-11-28 03:12:55,231 INFO L274 CegarLoopResult]: For program point ackermannFINAL(lines 16 24) no Hoare annotation was computed. [2020-11-28 03:12:55,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:12:55 BoogieIcfgContainer [2020-11-28 03:12:55,240 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:12:55,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:12:55,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:12:55,241 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:12:55,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:33" (3/4) ... [2020-11-28 03:12:55,245 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:12:55,252 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2020-11-28 03:12:55,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:12:55,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 03:12:55,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:12:55,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:12:55,335 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ebe7c967-62cd-4bfd-bfe1-633fcb90cf73/bin/uautomizer/witness.graphml [2020-11-28 03:12:55,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:12:55,337 INFO L168 Benchmark]: Toolchain (without parser) took 23102.87 ms. Allocated memory was 81.8 MB in the beginning and 325.1 MB in the end (delta: 243.3 MB). Free memory was 48.8 MB in the beginning and 174.9 MB in the end (delta: -126.0 MB). Peak memory consumption was 115.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:55,337 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 53.7 MB in the beginning and 53.6 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:55,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.50 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 48.6 MB in the beginning and 80.7 MB in the end (delta: -32.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:55,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 102.8 MB. Free memory was 80.7 MB in the beginning and 79.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:55,338 INFO L168 Benchmark]: Boogie Preprocessor took 25.30 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 78.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:55,339 INFO L168 Benchmark]: RCFGBuilder took 394.98 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 65.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:55,339 INFO L168 Benchmark]: TraceAbstraction took 22225.49 ms. Allocated memory was 102.8 MB in the beginning and 325.1 MB in the end (delta: 222.3 MB). Free memory was 65.2 MB in the beginning and 178.0 MB in the end (delta: -112.8 MB). Peak memory consumption was 181.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:55,340 INFO L168 Benchmark]: Witness Printer took 95.13 ms. Allocated memory is still 325.1 MB. Free memory was 178.0 MB in the beginning and 174.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:55,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory was 53.7 MB in the beginning and 53.6 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.50 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 48.6 MB in the beginning and 80.7 MB in the end (delta: -32.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 102.8 MB. Free memory was 80.7 MB in the beginning and 79.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.30 ms. Allocated memory is still 102.8 MB. Free memory was 79.4 MB in the beginning and 78.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 394.98 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 65.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22225.49 ms. Allocated memory was 102.8 MB in the beginning and 325.1 MB in the end (delta: 222.3 MB). Free memory was 65.2 MB in the beginning and 178.0 MB in the end (delta: -112.8 MB). Peak memory consumption was 181.4 MB. Max. memory is 16.1 GB. * Witness Printer took 95.13 ms. Allocated memory is still 325.1 MB. Free memory was 178.0 MB in the beginning and 174.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.1s, OverallIterations: 10, TraceHistogramMax: 31, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 257 SDtfs, 352 SDslu, 1183 SDs, 0 SdLazy, 3257 SolverSat, 773 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1656 GetRequests, 1359 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3022 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 95 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 466 PreInvPairs, 1018 NumberOfFragments, 146 HoareAnnotationTreeSize, 466 FomulaSimplifications, 41250 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 6 FomulaSimplificationsInter, 3032 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 2116 NumberOfCodeBlocks, 1923 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 2097 ConstructedInterpolants, 0 QuantifiedInterpolants, 544045 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2763 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 14075/16936 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...