./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b3_o5.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_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 e8383605609727536c7199df6048e5c9703aa6e6 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:00:11,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:00:11,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:00:11,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:00:11,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:00:11,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:00:11,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:00:11,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:00:11,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:00:11,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:00:12,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:00:12,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:00:12,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:00:12,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:00:12,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:00:12,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:00:12,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:00:12,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:00:12,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:00:12,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:00:12,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:00:12,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:00:12,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:00:12,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:00:12,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:00:12,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:00:12,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:00:12,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:00:12,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:00:12,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:00:12,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:00:12,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:00:12,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:00:12,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:00:12,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:00:12,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:00:12,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:00:12,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:00:12,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:00:12,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:00:12,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:00:12,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:00:12,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:00:12,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:00:12,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:00:12,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:00:12,105 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:00:12,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:00:12,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:00:12,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:00:12,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:00:12,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:00:12,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:00:12,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:00:12,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:00:12,108 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:00:12,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:00:12,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:00:12,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:00:12,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:00:12,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:00:12,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:00:12,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:00:12,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:00:12,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:00:12,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:00:12,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:00:12,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:00:12,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:00:12,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:00:12,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:00:12,112 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_62bc662a-c015-4986-aa5b-bc38f812b083/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8383605609727536c7199df6048e5c9703aa6e6 [2020-11-30 00:00:12,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:00:12,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:00:12,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:00:12,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:00:12,562 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:00:12,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_b3_o5.c [2020-11-30 00:00:12,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/data/748edb528/8a166095fbb841edaf71ae8a662ddf88/FLAGcd79bd944 [2020-11-30 00:00:13,246 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:00:13,247 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/sv-benchmarks/c/recursive-simple/id2_b3_o5.c [2020-11-30 00:00:13,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/data/748edb528/8a166095fbb841edaf71ae8a662ddf88/FLAGcd79bd944 [2020-11-30 00:00:13,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/data/748edb528/8a166095fbb841edaf71ae8a662ddf88 [2020-11-30 00:00:13,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:00:13,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:00:13,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:00:13,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:00:13,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:00:13,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b5dc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13, skipping insertion in model container [2020-11-30 00:00:13,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:00:13,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:00:13,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:00:13,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:00:13,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:00:13,878 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:00:13,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13 WrapperNode [2020-11-30 00:00:13,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:00:13,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:00:13,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:00:13,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:00:13,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:00:13,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:00:13,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:00:13,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:00:13,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... [2020-11-30 00:00:13,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:00:13,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:00:13,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:00:13,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:00:13,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:00:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:00:14,006 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-11-30 00:00:14,006 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-11-30 00:00:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:00:14,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:00:14,007 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-30 00:00:14,007 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-30 00:00:14,476 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:00:14,480 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 00:00:14,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:00:14 BoogieIcfgContainer [2020-11-30 00:00:14,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:00:14,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:00:14,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:00:14,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:00:14,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:00:13" (1/3) ... [2020-11-30 00:00:14,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796314a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:00:14, skipping insertion in model container [2020-11-30 00:00:14,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:13" (2/3) ... [2020-11-30 00:00:14,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796314a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:00:14, skipping insertion in model container [2020-11-30 00:00:14,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:00:14" (3/3) ... [2020-11-30 00:00:14,493 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2020-11-30 00:00:14,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:00:14,510 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:00:14,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:00:14,563 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:00:14,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:00:14,564 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:00:14,564 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:00:14,564 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:00:14,564 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:00:14,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:00:14,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:00:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-30 00:00:14,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:00:14,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:14,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:14,598 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:14,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1818828162, now seen corresponding path program 1 times [2020-11-30 00:00:14,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:14,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375629238] [2020-11-30 00:00:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:14,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375629238] [2020-11-30 00:00:14,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:14,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:00:14,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325271103] [2020-11-30 00:00:14,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:00:14,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:15,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:00:15,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:15,024 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-11-30 00:00:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:15,088 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-11-30 00:00:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:15,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:00:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:15,102 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:00:15,102 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:00:15,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:00:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:00:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:00:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-30 00:00:15,178 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2020-11-30 00:00:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:15,178 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-30 00:00:15,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:00:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 00:00:15,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:00:15,182 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:15,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:15,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:00:15,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:15,184 INFO L82 PathProgramCache]: Analyzing trace with hash -554629661, now seen corresponding path program 1 times [2020-11-30 00:00:15,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:15,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458113894] [2020-11-30 00:00:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:15,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458113894] [2020-11-30 00:00:15,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:15,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:00:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640653053] [2020-11-30 00:00:15,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:00:15,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:00:15,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:15,476 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-11-30 00:00:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:15,520 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2020-11-30 00:00:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:15,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 00:00:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:15,525 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:00:15,525 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:00:15,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:00:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-30 00:00:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:00:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-11-30 00:00:15,539 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2020-11-30 00:00:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:15,540 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-11-30 00:00:15,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:00:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-11-30 00:00:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:00:15,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:15,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:15,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:00:15,545 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash -526000510, now seen corresponding path program 1 times [2020-11-30 00:00:15,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:15,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509425134] [2020-11-30 00:00:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509425134] [2020-11-30 00:00:15,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:15,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 00:00:15,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693132839] [2020-11-30 00:00:15,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:00:15,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:15,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:00:15,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:15,806 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 8 states. [2020-11-30 00:00:15,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:15,892 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-11-30 00:00:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:00:15,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-30 00:00:15,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:15,894 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:00:15,894 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:00:15,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:00:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:00:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-30 00:00:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:00:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-11-30 00:00:15,901 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2020-11-30 00:00:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:15,901 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-11-30 00:00:15,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:00:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-11-30 00:00:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:00:15,903 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:15,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:15,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:00:15,904 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:15,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1446075610, now seen corresponding path program 1 times [2020-11-30 00:00:15,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:15,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066000730] [2020-11-30 00:00:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:00:16,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066000730] [2020-11-30 00:00:16,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:16,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:00:16,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21896168] [2020-11-30 00:00:16,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:00:16,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:00:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:16,053 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-11-30 00:00:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:16,081 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-11-30 00:00:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:16,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-30 00:00:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:16,083 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:00:16,083 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 00:00:16,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 00:00:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-30 00:00:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:00:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-30 00:00:16,090 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2020-11-30 00:00:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:16,091 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-30 00:00:16,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:00:16,091 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-30 00:00:16,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:00:16,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:16,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:16,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:00:16,092 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1249562105, now seen corresponding path program 1 times [2020-11-30 00:00:16,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:16,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568578714] [2020-11-30 00:00:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:00:16,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568578714] [2020-11-30 00:00:16,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:16,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 00:00:16,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29205783] [2020-11-30 00:00:16,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:00:16,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:00:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:16,306 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-11-30 00:00:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:16,376 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-11-30 00:00:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:00:16,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-11-30 00:00:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:16,378 INFO L225 Difference]: With dead ends: 49 [2020-11-30 00:00:16,378 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 00:00:16,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:00:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 00:00:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-11-30 00:00:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 00:00:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-30 00:00:16,387 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 24 [2020-11-30 00:00:16,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:16,388 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-30 00:00:16,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:00:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-30 00:00:16,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:00:16,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:16,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:16,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:00:16,390 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1278191256, now seen corresponding path program 1 times [2020-11-30 00:00:16,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:16,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851514754] [2020-11-30 00:00:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:00:16,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851514754] [2020-11-30 00:00:16,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958467911] [2020-11-30 00:00:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:16,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-30 00:00:16,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:00:16,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:00:16,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-30 00:00:16,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048662169] [2020-11-30 00:00:16,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:00:16,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:16,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:00:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:00:16,863 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 12 states. [2020-11-30 00:00:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:17,054 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-11-30 00:00:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:00:17,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-11-30 00:00:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:17,055 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:00:17,055 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 00:00:17,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:00:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 00:00:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-11-30 00:00:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:00:17,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-11-30 00:00:17,067 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2020-11-30 00:00:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:17,068 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-11-30 00:00:17,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:00:17,068 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-11-30 00:00:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:00:17,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:17,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:17,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:00:17,286 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:17,286 INFO L82 PathProgramCache]: Analyzing trace with hash -798172718, now seen corresponding path program 1 times [2020-11-30 00:00:17,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:17,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036618924] [2020-11-30 00:00:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:00:17,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036618924] [2020-11-30 00:00:17,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:17,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-30 00:00:17,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037664856] [2020-11-30 00:00:17,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:00:17,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:17,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:00:17,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:17,549 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-11-30 00:00:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:17,617 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-11-30 00:00:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:00:17,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-30 00:00:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:17,621 INFO L225 Difference]: With dead ends: 53 [2020-11-30 00:00:17,621 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:00:17,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:00:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:00:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 00:00:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:00:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-30 00:00:17,635 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2020-11-30 00:00:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:17,637 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-30 00:00:17,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:00:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-30 00:00:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:00:17,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:17,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:17,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:00:17,640 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash -994686223, now seen corresponding path program 1 times [2020-11-30 00:00:17,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:17,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351065656] [2020-11-30 00:00:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:00:17,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351065656] [2020-11-30 00:00:17,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130953294] [2020-11-30 00:00:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:17,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:00:17,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 00:00:18,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:00:18,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2020-11-30 00:00:18,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669636201] [2020-11-30 00:00:18,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:00:18,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:18,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:00:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:00:18,057 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-11-30 00:00:18,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:18,076 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-11-30 00:00:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:18,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-30 00:00:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:18,077 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:00:18,078 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:00:18,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:00:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:00:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 00:00:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:00:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-30 00:00:18,084 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2020-11-30 00:00:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:18,084 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-30 00:00:18,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:00:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-30 00:00:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:00:18,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:18,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:18,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:00:18,306 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:18,306 INFO L82 PathProgramCache]: Analyzing trace with hash -966057072, now seen corresponding path program 1 times [2020-11-30 00:00:18,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:18,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010851403] [2020-11-30 00:00:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:18,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:00:18,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010851403] [2020-11-30 00:00:18,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110252667] [2020-11-30 00:00:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:18,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-30 00:00:18,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:00:18,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:00:18,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-11-30 00:00:18,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233009239] [2020-11-30 00:00:18,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:00:18,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:00:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:00:18,928 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 15 states. [2020-11-30 00:00:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:19,180 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-11-30 00:00:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:00:19,181 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-11-30 00:00:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:19,182 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:00:19,182 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:00:19,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:00:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:00:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-30 00:00:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 00:00:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-30 00:00:19,204 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 31 [2020-11-30 00:00:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:19,204 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-30 00:00:19,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:00:19,205 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-30 00:00:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 00:00:19,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:19,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:19,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:00:19,407 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash 637559183, now seen corresponding path program 1 times [2020-11-30 00:00:19,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:19,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220958616] [2020-11-30 00:00:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:00:19,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220958616] [2020-11-30 00:00:19,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797460488] [2020-11-30 00:00:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:19,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:00:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-30 00:00:19,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:00:19,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2020-11-30 00:00:19,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691618660] [2020-11-30 00:00:19,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:00:19,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:19,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:00:19,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:00:19,894 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-11-30 00:00:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:19,937 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-11-30 00:00:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:19,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-11-30 00:00:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:19,941 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:00:19,941 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:00:19,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:00:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:00:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 00:00:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:00:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-11-30 00:00:19,952 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-11-30 00:00:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:19,952 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-11-30 00:00:19,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:00:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-11-30 00:00:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 00:00:19,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:19,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:20,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:00:20,181 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:20,182 INFO L82 PathProgramCache]: Analyzing trace with hash 441045678, now seen corresponding path program 2 times [2020-11-30 00:00:20,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:20,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688070121] [2020-11-30 00:00:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:20,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:20,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:00:20,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688070121] [2020-11-30 00:00:20,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534643877] [2020-11-30 00:00:20,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:20,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:00:20,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:00:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-30 00:00:20,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 00:00:20,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:00:20,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 18 [2020-11-30 00:00:20,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860836774] [2020-11-30 00:00:20,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-30 00:00:20,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:20,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-30 00:00:20,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:00:20,981 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 18 states. [2020-11-30 00:00:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:21,218 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-11-30 00:00:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:00:21,218 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2020-11-30 00:00:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:21,220 INFO L225 Difference]: With dead ends: 75 [2020-11-30 00:00:21,220 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 00:00:21,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:00:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 00:00:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-11-30 00:00:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 00:00:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-11-30 00:00:21,235 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 38 [2020-11-30 00:00:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:21,236 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-11-30 00:00:21,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-30 00:00:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-11-30 00:00:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-30 00:00:21,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:21,244 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:21,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-30 00:00:21,445 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:21,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:21,445 INFO L82 PathProgramCache]: Analyzing trace with hash -120569442, now seen corresponding path program 2 times [2020-11-30 00:00:21,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:21,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755617002] [2020-11-30 00:00:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-30 00:00:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 00:00:21,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755617002] [2020-11-30 00:00:21,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514852409] [2020-11-30 00:00:21,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/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 [2020-11-30 00:00:21,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:00:21,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:00:21,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:00:21,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-11-30 00:00:22,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:00:22,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2020-11-30 00:00:22,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779529049] [2020-11-30 00:00:22,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:00:22,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:22,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:00:22,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:00:22,046 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2020-11-30 00:00:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:22,072 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-30 00:00:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:22,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-11-30 00:00:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:22,074 INFO L225 Difference]: With dead ends: 51 [2020-11-30 00:00:22,074 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:00:22,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:00:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:00:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:00:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:00:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:00:22,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-30 00:00:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:22,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:00:22,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:00:22,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:00:22,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:00:22,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:00:22,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:00:22,311 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-30 00:00:22,311 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-30 00:00:22,311 INFO L274 CegarLoopResult]: For program point id2EXIT(lines 16 21) no Hoare annotation was computed. [2020-11-30 00:00:22,311 INFO L277 CegarLoopResult]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2020-11-30 00:00:22,311 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point id2FINAL(lines 16 21) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L277 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-30 00:00:22,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point L23(lines 23 29) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point idFINAL(lines 9 14) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L277 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point idEXIT(lines 9 14) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-11-30 00:00:22,313 INFO L277 CegarLoopResult]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2020-11-30 00:00:22,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:00:22 BoogieIcfgContainer [2020-11-30 00:00:22,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:00:22,318 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:00:22,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:00:22,318 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:00:22,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:00:14" (3/4) ... [2020-11-30 00:00:22,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:00:22,330 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2020-11-30 00:00:22,331 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-11-30 00:00:22,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 00:00:22,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:00:22,346 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:00:22,347 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:00:22,423 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_62bc662a-c015-4986-aa5b-bc38f812b083/bin/uautomizer/witness.graphml [2020-11-30 00:00:22,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:00:22,425 INFO L168 Benchmark]: Toolchain (without parser) took 8794.80 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 47.3 MB in the beginning and 107.6 MB in the end (delta: -60.2 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:22,425 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 88.1 MB. Free memory is still 63.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:00:22,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.00 ms. Allocated memory is still 88.1 MB. Free memory was 47.1 MB in the beginning and 60.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:22,426 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.00 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 59.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:00:22,427 INFO L168 Benchmark]: Boogie Preprocessor took 20.03 ms. Allocated memory is still 88.1 MB. Free memory was 59.0 MB in the beginning and 58.1 MB in the end (delta: 939.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:22,428 INFO L168 Benchmark]: RCFGBuilder took 547.27 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 62.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:22,428 INFO L168 Benchmark]: TraceAbstraction took 7832.72 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 61.7 MB in the beginning and 43.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:22,429 INFO L168 Benchmark]: Witness Printer took 105.08 ms. Allocated memory is still 130.0 MB. Free memory was 43.2 MB in the beginning and 107.6 MB in the end (delta: -64.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:22,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 88.1 MB. Free memory is still 63.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.00 ms. Allocated memory is still 88.1 MB. Free memory was 47.1 MB in the beginning and 60.2 MB in the end (delta: -13.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.00 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 59.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.03 ms. Allocated memory is still 88.1 MB. Free memory was 59.0 MB in the beginning and 58.1 MB in the end (delta: 939.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 547.27 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 62.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7832.72 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 61.7 MB in the beginning and 43.2 MB in the end (delta: 18.4 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. * Witness Printer took 105.08 ms. Allocated memory is still 130.0 MB. Free memory was 43.2 MB in the beginning and 107.6 MB in the end (delta: -64.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 318 SDtfs, 37 SDslu, 1951 SDs, 0 SdLazy, 504 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 422 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 38 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 537 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 519 ConstructedInterpolants, 0 QuantifiedInterpolants, 49671 SizeOfPredicates, 17 NumberOfNonLiveVariables, 561 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 179/231 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...