./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 595c6555624af5bbcf79585a20acb2500e3eeee8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:19:13,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:19:13,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:19:13,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:19:13,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:19:13,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:19:13,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:19:13,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:19:13,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:19:13,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:19:13,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:19:13,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:19:13,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:19:13,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:19:13,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:19:13,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:19:13,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:19:13,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:19:13,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:19:13,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:19:13,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:19:13,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:19:13,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:19:13,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:19:13,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:19:13,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:19:13,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:19:13,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:19:13,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:19:13,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:19:13,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:19:13,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:19:13,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:19:13,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:19:13,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:19:13,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:19:13,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:19:13,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:19:13,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:19:13,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:19:13,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:19:13,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:19:13,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:19:13,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:19:13,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:19:13,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:19:13,148 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:19:13,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:19:13,149 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:19:13,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:19:13,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:19:13,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:19:13,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:19:13,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:19:13,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:19:13,151 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:19:13,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:19:13,152 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:19:13,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:19:13,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:19:13,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:19:13,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:19:13,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:19:13,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:19:13,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:19:13,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:19:13,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:19:13,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:19:13,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:19:13,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:19:13,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9986f0b1-0f38-4bfb-a154-fea903138935/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(__VERIFIER_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 -> 595c6555624af5bbcf79585a20acb2500e3eeee8 [2019-11-16 00:19:13,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:19:13,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:19:13,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:19:13,206 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:19:13,206 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:19:13,207 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2019-11-16 00:19:13,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/data/4eaa4d40d/350b791c24974540aa6db8e4aeb75cff/FLAG3d36de2c5 [2019-11-16 00:19:13,652 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:19:13,652 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2019-11-16 00:19:13,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/data/4eaa4d40d/350b791c24974540aa6db8e4aeb75cff/FLAG3d36de2c5 [2019-11-16 00:19:14,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/data/4eaa4d40d/350b791c24974540aa6db8e4aeb75cff [2019-11-16 00:19:14,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:19:14,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:19:14,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:19:14,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:19:14,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:19:14,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e35639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14, skipping insertion in model container [2019-11-16 00:19:14,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:19:14,111 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:19:14,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:19:14,245 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:19:14,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:19:14,343 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:19:14,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14 WrapperNode [2019-11-16 00:19:14,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:19:14,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:19:14,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:19:14,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:19:14,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:19:14,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:19:14,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:19:14,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:19:14,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... [2019-11-16 00:19:14,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:19:14,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:19:14,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:19:14,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:19:14,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:19:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:19:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-11-16 00:19:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-11-16 00:19:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-11-16 00:19:14,468 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-11-16 00:19:14,716 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:19:14,716 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-16 00:19:14,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:14 BoogieIcfgContainer [2019-11-16 00:19:14,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:19:14,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:19:14,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:19:14,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:19:14,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:19:14" (1/3) ... [2019-11-16 00:19:14,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e36a311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:14, skipping insertion in model container [2019-11-16 00:19:14,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:14" (2/3) ... [2019-11-16 00:19:14,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e36a311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:14, skipping insertion in model container [2019-11-16 00:19:14,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:14" (3/3) ... [2019-11-16 00:19:14,730 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2019-11-16 00:19:14,739 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:19:14,749 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:19:14,759 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:19:14,793 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:19:14,793 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:19:14,794 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:19:14,794 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:19:14,794 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:19:14,795 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:19:14,795 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:19:14,795 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:19:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-16 00:19:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-16 00:19:14,825 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:14,826 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:14,829 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:14,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:14,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1871295635, now seen corresponding path program 1 times [2019-11-16 00:19:14,845 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:14,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712998119] [2019-11-16 00:19:14,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:14,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:14,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:19:15,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712998119] [2019-11-16 00:19:15,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:19:15,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:19:15,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429441939] [2019-11-16 00:19:15,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:19:15,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:15,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:19:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:19:15,075 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-11-16 00:19:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:15,178 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-11-16 00:19:15,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:19:15,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-16 00:19:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:15,188 INFO L225 Difference]: With dead ends: 38 [2019-11-16 00:19:15,189 INFO L226 Difference]: Without dead ends: 26 [2019-11-16 00:19:15,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:19:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-16 00:19:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-16 00:19:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-16 00:19:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-16 00:19:15,228 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2019-11-16 00:19:15,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:15,229 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-16 00:19:15,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:19:15,229 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-16 00:19:15,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:19:15,231 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:15,231 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:15,231 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:15,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1404217650, now seen corresponding path program 1 times [2019-11-16 00:19:15,232 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:15,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243548338] [2019-11-16 00:19:15,232 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:15,232 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:15,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:19:15,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243548338] [2019-11-16 00:19:15,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:19:15,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:19:15,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157118644] [2019-11-16 00:19:15,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:19:15,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:19:15,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:19:15,280 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 5 states. [2019-11-16 00:19:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:15,361 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-16 00:19:15,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:19:15,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-16 00:19:15,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:15,363 INFO L225 Difference]: With dead ends: 32 [2019-11-16 00:19:15,363 INFO L226 Difference]: Without dead ends: 28 [2019-11-16 00:19:15,364 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:19:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-16 00:19:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-16 00:19:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-16 00:19:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-16 00:19:15,370 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2019-11-16 00:19:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:15,371 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-16 00:19:15,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:19:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-16 00:19:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:19:15,372 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:15,372 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:15,372 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:15,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1629927371, now seen corresponding path program 1 times [2019-11-16 00:19:15,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:15,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725215739] [2019-11-16 00:19:15,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:15,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:15,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:19:15,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725215739] [2019-11-16 00:19:15,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229638122] [2019-11-16 00:19:15,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:15,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:19:15,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:19:15,731 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:15,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-16 00:19:15,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895632982] [2019-11-16 00:19:15,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:19:15,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:15,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:19:15,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:19:15,733 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 10 states. [2019-11-16 00:19:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:15,898 INFO L93 Difference]: Finished difference Result 59 states and 83 transitions. [2019-11-16 00:19:15,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:19:15,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-16 00:19:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:15,900 INFO L225 Difference]: With dead ends: 59 [2019-11-16 00:19:15,900 INFO L226 Difference]: Without dead ends: 35 [2019-11-16 00:19:15,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:19:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-16 00:19:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-16 00:19:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-16 00:19:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2019-11-16 00:19:15,917 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 22 [2019-11-16 00:19:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:15,918 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2019-11-16 00:19:15,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:19:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2019-11-16 00:19:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-16 00:19:15,919 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:15,920 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:16,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:16,133 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:16,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:16,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1285987244, now seen corresponding path program 1 times [2019-11-16 00:19:16,133 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:16,133 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871625800] [2019-11-16 00:19:16,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:16,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:16,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:19:16,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871625800] [2019-11-16 00:19:16,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420803590] [2019-11-16 00:19:16,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:19:16,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:19:16,372 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:16,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-16 00:19:16,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356815390] [2019-11-16 00:19:16,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:19:16,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:16,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:19:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:19:16,374 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 10 states. [2019-11-16 00:19:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:16,595 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2019-11-16 00:19:16,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:19:16,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-16 00:19:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:16,599 INFO L225 Difference]: With dead ends: 55 [2019-11-16 00:19:16,599 INFO L226 Difference]: Without dead ends: 51 [2019-11-16 00:19:16,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:19:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-16 00:19:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-11-16 00:19:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-16 00:19:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2019-11-16 00:19:16,626 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 23 [2019-11-16 00:19:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:16,629 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2019-11-16 00:19:16,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:19:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2019-11-16 00:19:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-16 00:19:16,633 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:16,633 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:16,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:16,837 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -649262923, now seen corresponding path program 1 times [2019-11-16 00:19:16,837 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:16,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298213810] [2019-11-16 00:19:16,837 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:16,838 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:16,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-16 00:19:16,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298213810] [2019-11-16 00:19:16,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093597351] [2019-11-16 00:19:16,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:19:17,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:19:17,069 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:17,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-16 00:19:17,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602864449] [2019-11-16 00:19:17,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:19:17,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:17,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:19:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:19:17,071 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand 12 states. [2019-11-16 00:19:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:17,415 INFO L93 Difference]: Finished difference Result 114 states and 187 transitions. [2019-11-16 00:19:17,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-16 00:19:17,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-11-16 00:19:17,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:17,418 INFO L225 Difference]: With dead ends: 114 [2019-11-16 00:19:17,418 INFO L226 Difference]: Without dead ends: 68 [2019-11-16 00:19:17,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:19:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-16 00:19:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-11-16 00:19:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-16 00:19:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2019-11-16 00:19:17,439 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 98 transitions. Word has length 35 [2019-11-16 00:19:17,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:17,440 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 98 transitions. [2019-11-16 00:19:17,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:19:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2019-11-16 00:19:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-16 00:19:17,442 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:17,442 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:17,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:17,643 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:17,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2000747716, now seen corresponding path program 1 times [2019-11-16 00:19:17,644 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:17,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176699165] [2019-11-16 00:19:17,644 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:17,644 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:17,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-16 00:19:17,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176699165] [2019-11-16 00:19:17,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200784688] [2019-11-16 00:19:17,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:17,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:19:17,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-16 00:19:17,868 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:17,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2019-11-16 00:19:17,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381311401] [2019-11-16 00:19:17,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:19:17,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:17,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:19:17,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:19:17,869 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. Second operand 12 states. [2019-11-16 00:19:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:18,164 INFO L93 Difference]: Finished difference Result 147 states and 239 transitions. [2019-11-16 00:19:18,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:19:18,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2019-11-16 00:19:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:18,169 INFO L225 Difference]: With dead ends: 147 [2019-11-16 00:19:18,169 INFO L226 Difference]: Without dead ends: 83 [2019-11-16 00:19:18,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:19:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-16 00:19:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2019-11-16 00:19:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-16 00:19:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 96 transitions. [2019-11-16 00:19:18,190 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 96 transitions. Word has length 36 [2019-11-16 00:19:18,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:18,190 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 96 transitions. [2019-11-16 00:19:18,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:19:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 96 transitions. [2019-11-16 00:19:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-16 00:19:18,193 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:18,193 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:18,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:18,397 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:18,397 INFO L82 PathProgramCache]: Analyzing trace with hash -434541687, now seen corresponding path program 1 times [2019-11-16 00:19:18,397 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:18,397 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994510805] [2019-11-16 00:19:18,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:18,397 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:18,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-16 00:19:18,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994510805] [2019-11-16 00:19:18,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636205549] [2019-11-16 00:19:18,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:18,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:19:18,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-16 00:19:18,815 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:18,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2019-11-16 00:19:18,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559523765] [2019-11-16 00:19:18,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-16 00:19:18,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-16 00:19:18,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:19:18,817 INFO L87 Difference]: Start difference. First operand 66 states and 96 transitions. Second operand 16 states. [2019-11-16 00:19:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:19,345 INFO L93 Difference]: Finished difference Result 164 states and 279 transitions. [2019-11-16 00:19:19,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-16 00:19:19,346 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2019-11-16 00:19:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:19,348 INFO L225 Difference]: With dead ends: 164 [2019-11-16 00:19:19,348 INFO L226 Difference]: Without dead ends: 100 [2019-11-16 00:19:19,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2019-11-16 00:19:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-16 00:19:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2019-11-16 00:19:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-16 00:19:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 145 transitions. [2019-11-16 00:19:19,372 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 145 transitions. Word has length 50 [2019-11-16 00:19:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:19,373 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 145 transitions. [2019-11-16 00:19:19,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-16 00:19:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 145 transitions. [2019-11-16 00:19:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-16 00:19:19,377 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:19,377 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:19,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:19,581 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash 177614216, now seen corresponding path program 2 times [2019-11-16 00:19:19,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:19,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19618244] [2019-11-16 00:19:19,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:19,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:19,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 25 proven. 40 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-16 00:19:19,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19618244] [2019-11-16 00:19:19,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795916524] [2019-11-16 00:19:19,802 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/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 [2019-11-16 00:19:19,854 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:19:19,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:19:19,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:19:19,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-16 00:19:19,961 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:19,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2019-11-16 00:19:19,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104256192] [2019-11-16 00:19:19,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-16 00:19:19,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:19,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-16 00:19:19,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:19:19,964 INFO L87 Difference]: Start difference. First operand 89 states and 145 transitions. Second operand 18 states. [2019-11-16 00:19:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:20,501 INFO L93 Difference]: Finished difference Result 207 states and 388 transitions. [2019-11-16 00:19:20,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-16 00:19:20,501 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 77 [2019-11-16 00:19:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:20,504 INFO L225 Difference]: With dead ends: 207 [2019-11-16 00:19:20,504 INFO L226 Difference]: Without dead ends: 114 [2019-11-16 00:19:20,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2019-11-16 00:19:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-16 00:19:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2019-11-16 00:19:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-16 00:19:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 135 transitions. [2019-11-16 00:19:20,521 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 135 transitions. Word has length 77 [2019-11-16 00:19:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:20,521 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 135 transitions. [2019-11-16 00:19:20,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-16 00:19:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2019-11-16 00:19:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-16 00:19:20,527 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:20,527 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:20,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:20,731 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:20,731 INFO L82 PathProgramCache]: Analyzing trace with hash 973264012, now seen corresponding path program 1 times [2019-11-16 00:19:20,731 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:20,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634982896] [2019-11-16 00:19:20,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:20,731 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:20,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 55 proven. 127 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-11-16 00:19:21,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634982896] [2019-11-16 00:19:21,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209928497] [2019-11-16 00:19:21,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:21,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:19:21,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 48 proven. 91 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2019-11-16 00:19:21,302 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:21,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 20 [2019-11-16 00:19:21,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508990198] [2019-11-16 00:19:21,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-16 00:19:21,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:21,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-16 00:19:21,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:19:21,304 INFO L87 Difference]: Start difference. First operand 88 states and 135 transitions. Second operand 20 states. [2019-11-16 00:19:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:21,893 INFO L93 Difference]: Finished difference Result 219 states and 386 transitions. [2019-11-16 00:19:21,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-16 00:19:21,894 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 120 [2019-11-16 00:19:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:21,896 INFO L225 Difference]: With dead ends: 219 [2019-11-16 00:19:21,896 INFO L226 Difference]: Without dead ends: 129 [2019-11-16 00:19:21,897 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2019-11-16 00:19:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-16 00:19:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 115. [2019-11-16 00:19:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-11-16 00:19:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 182 transitions. [2019-11-16 00:19:21,922 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 182 transitions. Word has length 120 [2019-11-16 00:19:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:21,922 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 182 transitions. [2019-11-16 00:19:21,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-16 00:19:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 182 transitions. [2019-11-16 00:19:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-16 00:19:21,929 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:21,930 INFO L380 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:22,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:22,133 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:22,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:22,134 INFO L82 PathProgramCache]: Analyzing trace with hash 245292255, now seen corresponding path program 1 times [2019-11-16 00:19:22,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:22,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435212749] [2019-11-16 00:19:22,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:22,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:22,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 210 proven. 368 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-11-16 00:19:22,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435212749] [2019-11-16 00:19:22,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688216987] [2019-11-16 00:19:22,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:22,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:19:22,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 250 proven. 118 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2019-11-16 00:19:23,133 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:23,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 11] total 28 [2019-11-16 00:19:23,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32352831] [2019-11-16 00:19:23,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-16 00:19:23,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:23,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-16 00:19:23,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2019-11-16 00:19:23,136 INFO L87 Difference]: Start difference. First operand 115 states and 182 transitions. Second operand 28 states. [2019-11-16 00:19:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:23,844 INFO L93 Difference]: Finished difference Result 275 states and 498 transitions. [2019-11-16 00:19:23,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-16 00:19:23,845 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 214 [2019-11-16 00:19:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:23,847 INFO L225 Difference]: With dead ends: 275 [2019-11-16 00:19:23,848 INFO L226 Difference]: Without dead ends: 154 [2019-11-16 00:19:23,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2019-11-16 00:19:23,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-11-16 00:19:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 117. [2019-11-16 00:19:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-11-16 00:19:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2019-11-16 00:19:23,863 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 214 [2019-11-16 00:19:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:23,864 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2019-11-16 00:19:23,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-16 00:19:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2019-11-16 00:19:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-16 00:19:23,867 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:23,867 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:24,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:24,070 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:24,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1338982035, now seen corresponding path program 2 times [2019-11-16 00:19:24,070 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:24,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701037731] [2019-11-16 00:19:24,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:24,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:24,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 202 proven. 153 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2019-11-16 00:19:24,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701037731] [2019-11-16 00:19:24,626 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563657222] [2019-11-16 00:19:24,626 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:24,711 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:19:24,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:19:24,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:19:24,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 123 proven. 32 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2019-11-16 00:19:24,817 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:24,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8] total 26 [2019-11-16 00:19:24,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088976355] [2019-11-16 00:19:24,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-16 00:19:24,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:24,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-16 00:19:24,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2019-11-16 00:19:24,819 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand 26 states. [2019-11-16 00:19:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:25,556 INFO L93 Difference]: Finished difference Result 279 states and 470 transitions. [2019-11-16 00:19:25,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-16 00:19:25,557 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2019-11-16 00:19:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:25,559 INFO L225 Difference]: With dead ends: 279 [2019-11-16 00:19:25,559 INFO L226 Difference]: Without dead ends: 156 [2019-11-16 00:19:25,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=1329, Unknown=0, NotChecked=0, Total=1560 [2019-11-16 00:19:25,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-11-16 00:19:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 140. [2019-11-16 00:19:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-16 00:19:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2019-11-16 00:19:25,574 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 160 [2019-11-16 00:19:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:25,575 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2019-11-16 00:19:25,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-16 00:19:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2019-11-16 00:19:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-16 00:19:25,578 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:25,578 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:25,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:25,790 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:25,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1112792143, now seen corresponding path program 3 times [2019-11-16 00:19:25,791 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:25,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733547531] [2019-11-16 00:19:25,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:25,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:25,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2019-11-16 00:19:26,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733547531] [2019-11-16 00:19:26,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354362597] [2019-11-16 00:19:26,800 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:26,889 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2019-11-16 00:19:26,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:19:26,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 103 conjunts are in the unsatisfiable core [2019-11-16 00:19:26,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2019-11-16 00:19:27,650 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:27,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-11-16 00:19:27,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231241585] [2019-11-16 00:19:27,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-16 00:19:27,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:27,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-16 00:19:27,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-11-16 00:19:27,652 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand 36 states. [2019-11-16 00:19:28,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:28,063 INFO L93 Difference]: Finished difference Result 154 states and 212 transitions. [2019-11-16 00:19:28,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-16 00:19:28,064 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 173 [2019-11-16 00:19:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:28,066 INFO L225 Difference]: With dead ends: 154 [2019-11-16 00:19:28,067 INFO L226 Difference]: Without dead ends: 150 [2019-11-16 00:19:28,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 227 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2019-11-16 00:19:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-11-16 00:19:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2019-11-16 00:19:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-11-16 00:19:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 199 transitions. [2019-11-16 00:19:28,084 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 199 transitions. Word has length 173 [2019-11-16 00:19:28,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:28,086 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 199 transitions. [2019-11-16 00:19:28,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-16 00:19:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 199 transitions. [2019-11-16 00:19:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-16 00:19:28,089 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:28,089 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:28,293 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:28,294 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:28,294 INFO L82 PathProgramCache]: Analyzing trace with hash 634625338, now seen corresponding path program 4 times [2019-11-16 00:19:28,295 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:28,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273186371] [2019-11-16 00:19:28,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:28,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:28,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 131 proven. 3 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2019-11-16 00:19:28,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273186371] [2019-11-16 00:19:28,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578919633] [2019-11-16 00:19:28,545 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:28,625 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:19:28,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:19:28,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:19:28,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2019-11-16 00:19:28,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:19:28,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2019-11-16 00:19:28,666 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101919916] [2019-11-16 00:19:28,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:19:28,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:19:28,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:19:28,667 INFO L87 Difference]: Start difference. First operand 143 states and 199 transitions. Second operand 6 states. [2019-11-16 00:19:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:28,719 INFO L93 Difference]: Finished difference Result 268 states and 389 transitions. [2019-11-16 00:19:28,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:19:28,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2019-11-16 00:19:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:28,722 INFO L225 Difference]: With dead ends: 268 [2019-11-16 00:19:28,722 INFO L226 Difference]: Without dead ends: 131 [2019-11-16 00:19:28,723 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:19:28,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-16 00:19:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-11-16 00:19:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-16 00:19:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 177 transitions. [2019-11-16 00:19:28,738 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 177 transitions. Word has length 172 [2019-11-16 00:19:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:28,738 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 177 transitions. [2019-11-16 00:19:28,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:19:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 177 transitions. [2019-11-16 00:19:28,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-11-16 00:19:28,742 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:28,742 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 16, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:28,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:28,946 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:28,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1144821354, now seen corresponding path program 5 times [2019-11-16 00:19:28,946 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:28,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427091716] [2019-11-16 00:19:28,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:28,946 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:28,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 381 proven. 570 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2019-11-16 00:19:29,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427091716] [2019-11-16 00:19:29,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514120732] [2019-11-16 00:19:29,621 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:29,700 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-16 00:19:29,700 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:19:29,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:19:29,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 949 proven. 71 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2019-11-16 00:19:29,863 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:29,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 26 [2019-11-16 00:19:29,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079705078] [2019-11-16 00:19:29,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-16 00:19:29,866 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:29,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-16 00:19:29,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2019-11-16 00:19:29,867 INFO L87 Difference]: Start difference. First operand 131 states and 177 transitions. Second operand 26 states. [2019-11-16 00:19:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:30,259 INFO L93 Difference]: Finished difference Result 261 states and 365 transitions. [2019-11-16 00:19:30,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-16 00:19:30,259 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 256 [2019-11-16 00:19:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:30,261 INFO L225 Difference]: With dead ends: 261 [2019-11-16 00:19:30,261 INFO L226 Difference]: Without dead ends: 135 [2019-11-16 00:19:30,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2019-11-16 00:19:30,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-16 00:19:30,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2019-11-16 00:19:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2019-11-16 00:19:30,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2019-11-16 00:19:30,271 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 256 [2019-11-16 00:19:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:30,272 INFO L462 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2019-11-16 00:19:30,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-16 00:19:30,272 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2019-11-16 00:19:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2019-11-16 00:19:30,278 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:19:30,278 INFO L380 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 21, 20, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 9, 7, 5, 5, 1, 1, 1, 1, 1, 1] [2019-11-16 00:19:30,481 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:30,481 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:19:30,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:19:30,482 INFO L82 PathProgramCache]: Analyzing trace with hash -494530659, now seen corresponding path program 6 times [2019-11-16 00:19:30,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:19:30,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663634383] [2019-11-16 00:19:30,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:30,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:19:30,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:19:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:19:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 663 proven. 890 refuted. 0 times theorem prover too weak. 1923 trivial. 0 not checked. [2019-11-16 00:19:31,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663634383] [2019-11-16 00:19:31,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146107111] [2019-11-16 00:19:31,702 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:31,832 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-16 00:19:31,832 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:19:31,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:19:31,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:19:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 225 proven. 511 refuted. 0 times theorem prover too weak. 2740 trivial. 0 not checked. [2019-11-16 00:19:32,049 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:19:32,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 11] total 34 [2019-11-16 00:19:32,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533263086] [2019-11-16 00:19:32,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-16 00:19:32,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:19:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-16 00:19:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2019-11-16 00:19:32,053 INFO L87 Difference]: Start difference. First operand 132 states and 173 transitions. Second operand 34 states. [2019-11-16 00:19:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:19:33,088 INFO L93 Difference]: Finished difference Result 310 states and 472 transitions. [2019-11-16 00:19:33,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-11-16 00:19:33,088 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 350 [2019-11-16 00:19:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:19:33,089 INFO L225 Difference]: With dead ends: 310 [2019-11-16 00:19:33,089 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:19:33,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=364, Invalid=2606, Unknown=0, NotChecked=0, Total=2970 [2019-11-16 00:19:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:19:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:19:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:19:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:19:33,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 350 [2019-11-16 00:19:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:19:33,093 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:19:33,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-16 00:19:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:19:33,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:19:33,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:19:33,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:19:33,954 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 7 [2019-11-16 00:19:34,368 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 29 [2019-11-16 00:19:34,529 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 6 [2019-11-16 00:19:34,955 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 34 [2019-11-16 00:19:34,957 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:19:34,957 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:19:34,957 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:19:34,957 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-11-16 00:19:34,957 INFO L439 ceAbstractionStarter]: At program point L41(lines 35 42) the Hoare annotation is: (<= 6 ULTIMATE.start_main_~x~0) [2019-11-16 00:19:34,957 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-16 00:19:34,958 INFO L443 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-11-16 00:19:34,958 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6)) [2019-11-16 00:19:34,958 INFO L443 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-11-16 00:19:34,958 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-11-16 00:19:34,958 INFO L446 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2019-11-16 00:19:34,958 INFO L439 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 2))) [2019-11-16 00:19:34,958 INFO L443 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-16 00:19:34,958 INFO L439 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse3 (<= |fibo2_#in~n| 4)) (.cse1 (= fibo2_~n |fibo2_#in~n|))) (let ((.cse0 (and .cse3 (<= |fibo2_#t~ret2| 2) .cse1 (<= 4 fibo2_~n) (<= 2 |fibo2_#t~ret2|))) (.cse2 (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1) (<= fibo2_~n 3) .cse1))) (and (or .cse0 (and .cse1 (<= 6 |fibo2_#in~n|)) .cse2 (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3) .cse1)) (or .cse0 .cse2 (not .cse3)) (not (<= |fibo2_#in~n| 2))))) [2019-11-16 00:19:34,958 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-16 00:19:34,958 INFO L443 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L446 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2019-11-16 00:19:34,959 INFO L439 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L439 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse4 (= fibo1_~n |fibo1_#in~n|))) (let ((.cse0 (and (<= 7 |fibo1_#in~n|) .cse4)) (.cse1 (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2) (<= 4 fibo1_~n) (<= fibo1_~n 4) .cse4)) (.cse2 (and (<= fibo1_~n 5) (<= 5 fibo1_~n) .cse4)) (.cse3 (and (<= |fibo1_#t~ret0| 5) (<= 6 fibo1_~n) (<= fibo1_~n 6) (<= 5 |fibo1_#t~ret0|) .cse4))) (and (or .cse0 .cse1 .cse2 .cse3 (and (<= 1 |fibo1_#t~ret0|) (< 1 fibo1_~n) (<= |fibo1_#t~ret0| 1) .cse4)) (or .cse0 .cse1 .cse2 .cse3 (not (<= 4 |fibo1_#in~n|)))))) [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2019-11-16 00:19:34,959 INFO L443 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-11-16 00:19:34,960 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2019-11-16 00:19:34,960 INFO L443 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2019-11-16 00:19:34,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:19:34 BoogieIcfgContainer [2019-11-16 00:19:34,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:19:34,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:19:34,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:19:34,973 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:19:34,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:14" (3/4) ... [2019-11-16 00:19:34,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:19:34,982 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2019-11-16 00:19:34,983 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2019-11-16 00:19:34,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-16 00:19:34,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:19:35,029 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9986f0b1-0f38-4bfb-a154-fea903138935/bin/uautomizer/witness.graphml [2019-11-16 00:19:35,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:19:35,031 INFO L168 Benchmark]: Toolchain (without parser) took 20960.95 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 419.4 MB). Free memory was 944.8 MB in the beginning and 1.2 GB in the end (delta: -282.0 MB). Peak memory consumption was 137.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:19:35,031 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:19:35,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-11-16 00:19:35,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:19:35,032 INFO L168 Benchmark]: Boogie Preprocessor took 27.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:19:35,033 INFO L168 Benchmark]: RCFGBuilder took 314.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:19:35,033 INFO L168 Benchmark]: TraceAbstraction took 20254.04 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 271.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -107.2 MB). Peak memory consumption was 540.1 MB. Max. memory is 11.5 GB. [2019-11-16 00:19:35,034 INFO L168 Benchmark]: Witness Printer took 57.07 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:19:35,036 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 267.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -196.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 314.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20254.04 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 271.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -107.2 MB). Peak memory consumption was 540.1 MB. Max. memory is 11.5 GB. * Witness Printer took 57.07 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 6 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 20.1s, OverallIterations: 15, TraceHistogramMax: 26, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, HoareTripleCheckerStatistics: 457 SDtfs, 849 SDslu, 4237 SDs, 0 SdLazy, 5680 SolverSat, 887 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2530 GetRequests, 2174 SyntacticMatches, 17 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2502 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 140 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 662 PreInvPairs, 1067 NumberOfFragments, 231 HoareAnnotationTreeSize, 662 FomulaSimplifications, 7331 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 8 FomulaSimplificationsInter, 12670 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 3395 NumberOfCodeBlocks, 3084 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 3367 ConstructedInterpolants, 0 QuantifiedInterpolants, 1279179 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3065 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 28 InterpolantComputations, 3 PerfectInterpolantSequences, 15063/18712 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...