./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 f612eebc128d68e9b4bc81ed92184f640c3b9bd4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:13:46,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:13:46,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:13:46,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:13:46,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:13:46,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:13:46,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:13:46,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:13:46,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:13:46,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:13:46,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:13:46,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:13:46,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:13:46,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:13:46,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:13:46,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:13:46,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:13:46,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:13:46,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:13:46,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:13:46,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:13:46,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:13:46,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:13:46,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:13:46,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:13:46,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:13:46,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:13:46,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:13:46,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:13:46,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:13:46,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:13:46,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:13:46,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:13:46,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:13:46,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:13:46,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:13:46,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:13:46,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:13:46,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:13:46,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:13:46,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:13:46,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:13:46,594 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:13:46,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:13:46,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:13:46,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:13:46,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:13:46,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:13:46,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:13:46,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:13:46,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:13:46,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:13:46,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:13:46,599 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_363e7901-559d-4b56-b438-17e95abf800f/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 -> f612eebc128d68e9b4bc81ed92184f640c3b9bd4 [2019-12-07 17:13:46,699 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:13:46,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:13:46,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:13:46,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:13:46,713 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:13:46,714 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2019-12-07 17:13:46,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/data/7beb3940f/018a779b45b144708913685f928bb8b6/FLAGb4e299b62 [2019-12-07 17:13:47,200 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:13:47,201 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2019-12-07 17:13:47,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/data/7beb3940f/018a779b45b144708913685f928bb8b6/FLAGb4e299b62 [2019-12-07 17:13:47,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/data/7beb3940f/018a779b45b144708913685f928bb8b6 [2019-12-07 17:13:47,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:13:47,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:13:47,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:13:47,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:13:47,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:13:47,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c8857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47, skipping insertion in model container [2019-12-07 17:13:47,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:13:47,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:13:47,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:13:47,337 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:13:47,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:13:47,387 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:13:47,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47 WrapperNode [2019-12-07 17:13:47,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:13:47,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:13:47,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:13:47,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:13:47,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:13:47,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:13:47,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:13:47,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:13:47,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... [2019-12-07 17:13:47,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:13:47,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:13:47,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:13:47,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:13:47,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:13:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:13:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2019-12-07 17:13:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2019-12-07 17:13:47,553 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:13:47,553 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:13:47,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:13:47 BoogieIcfgContainer [2019-12-07 17:13:47,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:13:47,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:13:47,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:13:47,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:13:47,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:13:47" (1/3) ... [2019-12-07 17:13:47,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6ed84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:13:47, skipping insertion in model container [2019-12-07 17:13:47,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:13:47" (2/3) ... [2019-12-07 17:13:47,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6ed84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:13:47, skipping insertion in model container [2019-12-07 17:13:47,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:13:47" (3/3) ... [2019-12-07 17:13:47,559 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2019-12-07 17:13:47,565 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:13:47,570 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:13:47,577 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 17:13:47,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:13:47,592 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:13:47,592 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:13:47,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:13:47,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:13:47,592 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:13:47,592 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:13:47,592 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:13:47,603 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-07 17:13:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:13:47,606 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:47,607 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:47,607 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:47,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1007516703, now seen corresponding path program 1 times [2019-12-07 17:13:47,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:47,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889639968] [2019-12-07 17:13:47,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:13:47,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889639968] [2019-12-07 17:13:47,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:13:47,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:13:47,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589479309] [2019-12-07 17:13:47,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:13:47,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:47,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:13:47,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:13:47,746 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2019-12-07 17:13:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:47,796 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2019-12-07 17:13:47,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:13:47,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 17:13:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:47,803 INFO L225 Difference]: With dead ends: 29 [2019-12-07 17:13:47,803 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 17:13:47,805 INFO L630 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 [2019-12-07 17:13:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 17:13:47,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 17:13:47,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 17:13:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 17:13:47,832 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2019-12-07 17:13:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:47,832 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 17:13:47,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:13:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 17:13:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:13:47,833 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:47,833 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:47,833 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -453503986, now seen corresponding path program 1 times [2019-12-07 17:13:47,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:47,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471643688] [2019-12-07 17:13:47,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:13:47,863 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471643688] [2019-12-07 17:13:47,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:13:47,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:13:47,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165984047] [2019-12-07 17:13:47,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:13:47,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:13:47,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:13:47,865 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 5 states. [2019-12-07 17:13:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:47,901 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-12-07 17:13:47,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:13:47,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 17:13:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:47,902 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:13:47,902 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 17:13:47,903 INFO L630 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 [2019-12-07 17:13:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 17:13:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-12-07 17:13:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 17:13:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 17:13:47,907 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-07 17:13:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:47,907 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 17:13:47,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:13:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 17:13:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 17:13:47,908 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:47,908 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:47,909 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash 511906889, now seen corresponding path program 1 times [2019-12-07 17:13:47,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:47,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818470302] [2019-12-07 17:13:47,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 17:13:47,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818470302] [2019-12-07 17:13:47,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094781886] [2019-12-07 17:13:47,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:13:48,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 17:13:48,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:48,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-12-07 17:13:48,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492008735] [2019-12-07 17:13:48,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:13:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:13:48,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:13:48,048 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 8 states. [2019-12-07 17:13:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:48,095 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2019-12-07 17:13:48,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:13:48,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-12-07 17:13:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:48,097 INFO L225 Difference]: With dead ends: 41 [2019-12-07 17:13:48,097 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 17:13:48,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:13:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 17:13:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-12-07 17:13:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:13:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-12-07 17:13:48,102 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 22 [2019-12-07 17:13:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:48,103 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-12-07 17:13:48,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:13:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2019-12-07 17:13:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 17:13:48,104 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:48,104 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:48,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:48,305 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 178931364, now seen corresponding path program 1 times [2019-12-07 17:13:48,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:48,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655113917] [2019-12-07 17:13:48,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 17:13:48,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655113917] [2019-12-07 17:13:48,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366533221] [2019-12-07 17:13:48,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,556 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:13:48,559 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 17:13:48,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:48,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-12-07 17:13:48,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039112119] [2019-12-07 17:13:48,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:13:48,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:48,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:13:48,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:13:48,597 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 8 states. [2019-12-07 17:13:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:48,671 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2019-12-07 17:13:48,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:13:48,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2019-12-07 17:13:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:48,673 INFO L225 Difference]: With dead ends: 47 [2019-12-07 17:13:48,673 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 17:13:48,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:13:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 17:13:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-12-07 17:13:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 17:13:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-12-07 17:13:48,681 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 23 [2019-12-07 17:13:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:48,681 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-12-07 17:13:48,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:13:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2019-12-07 17:13:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 17:13:48,683 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:48,683 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:48,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:48,884 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:48,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1840059703, now seen corresponding path program 2 times [2019-12-07 17:13:48,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:48,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249649718] [2019-12-07 17:13:48,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-12-07 17:13:48,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249649718] [2019-12-07 17:13:48,981 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541164064] [2019-12-07 17:13:48,981 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:49,006 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:13:49,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:13:49,007 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:13:49,008 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-12-07 17:13:49,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:49,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-12-07 17:13:49,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71521580] [2019-12-07 17:13:49,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:13:49,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:49,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:13:49,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:13:49,031 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 10 states. [2019-12-07 17:13:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:49,116 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2019-12-07 17:13:49,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 17:13:49,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2019-12-07 17:13:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:49,117 INFO L225 Difference]: With dead ends: 67 [2019-12-07 17:13:49,117 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 17:13:49,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:13:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 17:13:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-12-07 17:13:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 17:13:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-12-07 17:13:49,122 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 35 [2019-12-07 17:13:49,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:49,122 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-12-07 17:13:49,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:13:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-12-07 17:13:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-07 17:13:49,124 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:49,124 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:49,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:49,325 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:49,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:49,326 INFO L82 PathProgramCache]: Analyzing trace with hash 624826665, now seen corresponding path program 2 times [2019-12-07 17:13:49,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:49,327 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376267792] [2019-12-07 17:13:49,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-12-07 17:13:49,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376267792] [2019-12-07 17:13:49,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207158337] [2019-12-07 17:13:49,442 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:49,464 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:13:49,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:13:49,465 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:13:49,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-12-07 17:13:49,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:49,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-12-07 17:13:49,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120117331] [2019-12-07 17:13:49,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 17:13:49,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 17:13:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:13:49,484 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 10 states. [2019-12-07 17:13:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:49,550 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2019-12-07 17:13:49,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:13:49,551 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-12-07 17:13:49,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:49,552 INFO L225 Difference]: With dead ends: 52 [2019-12-07 17:13:49,552 INFO L226 Difference]: Without dead ends: 48 [2019-12-07 17:13:49,552 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-12-07 17:13:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-12-07 17:13:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-12-07 17:13:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 17:13:49,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2019-12-07 17:13:49,559 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 37 [2019-12-07 17:13:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:49,560 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2019-12-07 17:13:49,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 17:13:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2019-12-07 17:13:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 17:13:49,562 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:49,562 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:49,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:49,763 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:49,764 INFO L82 PathProgramCache]: Analyzing trace with hash -99212631, now seen corresponding path program 3 times [2019-12-07 17:13:49,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:49,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747501594] [2019-12-07 17:13:49,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 36 proven. 66 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-12-07 17:13:50,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747501594] [2019-12-07 17:13:50,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141082850] [2019-12-07 17:13:50,006 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:50,032 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-07 17:13:50,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:13:50,033 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:13:50,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 64 proven. 24 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-12-07 17:13:50,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:50,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2019-12-07 17:13:50,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605991037] [2019-12-07 17:13:50,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 17:13:50,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:50,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 17:13:50,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:13:50,086 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand 15 states. [2019-12-07 17:13:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:50,288 INFO L93 Difference]: Finished difference Result 89 states and 139 transitions. [2019-12-07 17:13:50,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 17:13:50,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-12-07 17:13:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:50,290 INFO L225 Difference]: With dead ends: 89 [2019-12-07 17:13:50,290 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 17:13:50,292 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2019-12-07 17:13:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 17:13:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-12-07 17:13:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 17:13:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2019-12-07 17:13:50,300 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 63 [2019-12-07 17:13:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:50,300 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2019-12-07 17:13:50,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 17:13:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2019-12-07 17:13:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-12-07 17:13:50,303 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:50,304 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:50,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:50,505 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash 548614988, now seen corresponding path program 4 times [2019-12-07 17:13:50,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:50,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833585444] [2019-12-07 17:13:50,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-12-07 17:13:50,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833585444] [2019-12-07 17:13:50,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393771936] [2019-12-07 17:13:50,794 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:50,824 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:13:50,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:13:50,825 INFO L264 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:13:50,828 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-12-07 17:13:50,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:50,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 14 [2019-12-07 17:13:50,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674531017] [2019-12-07 17:13:50,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 17:13:50,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:50,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 17:13:50,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-12-07 17:13:50,854 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 14 states. [2019-12-07 17:13:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:50,959 INFO L93 Difference]: Finished difference Result 116 states and 175 transitions. [2019-12-07 17:13:50,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 17:13:50,959 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2019-12-07 17:13:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:50,961 INFO L225 Difference]: With dead ends: 116 [2019-12-07 17:13:50,962 INFO L226 Difference]: Without dead ends: 112 [2019-12-07 17:13:50,962 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-12-07 17:13:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-07 17:13:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2019-12-07 17:13:50,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-12-07 17:13:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 158 transitions. [2019-12-07 17:13:50,973 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 158 transitions. Word has length 105 [2019-12-07 17:13:50,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:50,974 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 158 transitions. [2019-12-07 17:13:50,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 17:13:50,974 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 158 transitions. [2019-12-07 17:13:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-12-07 17:13:50,976 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:50,976 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:51,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:51,177 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:51,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:51,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2009245247, now seen corresponding path program 5 times [2019-12-07 17:13:51,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:51,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638413229] [2019-12-07 17:13:51,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2019-12-07 17:13:51,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638413229] [2019-12-07 17:13:51,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890841550] [2019-12-07 17:13:51,421 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:51,479 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2019-12-07 17:13:51,479 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:13:51,480 INFO L264 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:13:51,485 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 328 proven. 115 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2019-12-07 17:13:51,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:51,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 16 [2019-12-07 17:13:51,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274453517] [2019-12-07 17:13:51,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 17:13:51,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:51,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 17:13:51,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2019-12-07 17:13:51,516 INFO L87 Difference]: Start difference. First operand 103 states and 158 transitions. Second operand 16 states. [2019-12-07 17:13:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:51,659 INFO L93 Difference]: Finished difference Result 240 states and 405 transitions. [2019-12-07 17:13:51,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 17:13:51,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 173 [2019-12-07 17:13:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:51,663 INFO L225 Difference]: With dead ends: 240 [2019-12-07 17:13:51,663 INFO L226 Difference]: Without dead ends: 236 [2019-12-07 17:13:51,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2019-12-07 17:13:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2019-12-07 17:13:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 224. [2019-12-07 17:13:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-12-07 17:13:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 384 transitions. [2019-12-07 17:13:51,685 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 384 transitions. Word has length 173 [2019-12-07 17:13:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:51,686 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 384 transitions. [2019-12-07 17:13:51,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 17:13:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 384 transitions. [2019-12-07 17:13:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-12-07 17:13:51,689 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:51,689 INFO L410 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:51,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:51,890 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:51,891 INFO L82 PathProgramCache]: Analyzing trace with hash 960836894, now seen corresponding path program 6 times [2019-12-07 17:13:51,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:51,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856270964] [2019-12-07 17:13:51,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2019-12-07 17:13:52,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856270964] [2019-12-07 17:13:52,720 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125772432] [2019-12-07 17:13:52,720 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:52,819 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2019-12-07 17:13:52,819 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:13:52,822 INFO L264 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 167 conjunts are in the unsatisfiable core [2019-12-07 17:13:52,827 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2019-12-07 17:13:53,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:53,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2019-12-07 17:13:53,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222712530] [2019-12-07 17:13:53,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 17:13:53,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:53,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 17:13:53,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2019-12-07 17:13:53,372 INFO L87 Difference]: Start difference. First operand 224 states and 384 transitions. Second operand 28 states. [2019-12-07 17:13:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:53,722 INFO L93 Difference]: Finished difference Result 595 states and 1265 transitions. [2019-12-07 17:13:53,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 17:13:53,722 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 282 [2019-12-07 17:13:53,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:53,728 INFO L225 Difference]: With dead ends: 595 [2019-12-07 17:13:53,729 INFO L226 Difference]: Without dead ends: 591 [2019-12-07 17:13:53,730 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 400 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2019-12-07 17:13:53,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-12-07 17:13:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 244. [2019-12-07 17:13:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2019-12-07 17:13:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 437 transitions. [2019-12-07 17:13:53,765 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 437 transitions. Word has length 282 [2019-12-07 17:13:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:53,766 INFO L462 AbstractCegarLoop]: Abstraction has 244 states and 437 transitions. [2019-12-07 17:13:53,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 17:13:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 437 transitions. [2019-12-07 17:13:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-12-07 17:13:53,770 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:13:53,770 INFO L410 BasicCegarLoop]: trace histogram [51, 51, 42, 25, 25, 25, 25, 25, 25, 25, 17, 9, 1, 1, 1, 1, 1, 1] [2019-12-07 17:13:53,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:53,971 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:13:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:13:53,972 INFO L82 PathProgramCache]: Analyzing trace with hash -300076824, now seen corresponding path program 7 times [2019-12-07 17:13:53,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:13:53,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136878807] [2019-12-07 17:13:53,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:13:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7161 backedges. 1781 proven. 1378 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2019-12-07 17:13:54,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136878807] [2019-12-07 17:13:54,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718205483] [2019-12-07 17:13:54,733 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/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 [2019-12-07 17:13:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:13:54,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 17:13:54,808 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:13:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7161 backedges. 348 proven. 1442 refuted. 0 times theorem prover too weak. 5371 trivial. 0 not checked. [2019-12-07 17:13:54,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:13:54,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 28 [2019-12-07 17:13:54,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432301769] [2019-12-07 17:13:54,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 17:13:54,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:13:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 17:13:54,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2019-12-07 17:13:54,964 INFO L87 Difference]: Start difference. First operand 244 states and 437 transitions. Second operand 28 states. [2019-12-07 17:13:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:13:55,364 INFO L93 Difference]: Finished difference Result 819 states and 2077 transitions. [2019-12-07 17:13:55,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-07 17:13:55,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 351 [2019-12-07 17:13:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:13:55,365 INFO L225 Difference]: With dead ends: 819 [2019-12-07 17:13:55,365 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:13:55,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2019-12-07 17:13:55,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:13:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:13:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:13:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:13:55,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 351 [2019-12-07 17:13:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:13:55,376 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:13:55,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 17:13:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:13:55,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:13:55,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:13:55,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:13:56,326 WARN L192 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 42 [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L242 CegarLoopResult]: At program point L29(lines 23 30) the Hoare annotation is: (<= 7 ULTIMATE.start_main_~x~0) [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L242 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 7 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 7)) [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2019-12-07 17:13:56,402 INFO L246 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2019-12-07 17:13:56,403 INFO L242 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (= fibo_~n |fibo_#in~n|) (not (<= |fibo_#in~n| 1))) [2019-12-07 17:13:56,403 INFO L246 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2019-12-07 17:13:56,403 INFO L242 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse1 (<= |fibo_#t~ret0| 1)) (.cse2 (<= 1 |fibo_#t~ret0|)) (.cse0 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 (<= fibo_~n 3) .cse1 .cse2 (<= 3 fibo_~n)) (and (<= 4 fibo_~n) (<= fibo_~n 4) .cse0 (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2)) (and (<= |fibo_#t~ret0| 5) (<= 6 fibo_~n) .cse0 (<= 5 |fibo_#t~ret0|) (<= fibo_~n 6)) (and (<= |fibo_#t~ret0| 8) .cse0 (<= 8 |fibo_#t~ret0|) (<= 7 fibo_~n)) (and .cse0 .cse1 .cse2 (<= fibo_~n 2) (< 1 fibo_~n)) (and .cse0 (<= 3 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 3) (<= fibo_~n 5) (<= 5 fibo_~n)) (and (<= 8 |fibo_#in~n|) .cse0))) [2019-12-07 17:13:56,403 INFO L246 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2019-12-07 17:13:56,403 INFO L246 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2019-12-07 17:13:56,403 INFO L246 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2019-12-07 17:13:56,403 INFO L249 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2019-12-07 17:13:56,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:13:56 BoogieIcfgContainer [2019-12-07 17:13:56,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:13:56,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:13:56,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:13:56,413 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:13:56,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:13:47" (3/4) ... [2019-12-07 17:13:56,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:13:56,420 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2019-12-07 17:13:56,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 17:13:56,423 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:13:56,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_363e7901-559d-4b56-b438-17e95abf800f/bin/uautomizer/witness.graphml [2019-12-07 17:13:56,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:13:56,450 INFO L168 Benchmark]: Toolchain (without parser) took 9229.79 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 319.3 MB). Free memory was 943.5 MB in the beginning and 872.1 MB in the end (delta: 71.4 MB). Peak memory consumption was 390.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:13:56,450 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:13:56,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:13:56,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:13:56,451 INFO L168 Benchmark]: Boogie Preprocessor took 10.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:13:56,451 INFO L168 Benchmark]: RCFGBuilder took 132.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:13:56,451 INFO L168 Benchmark]: TraceAbstraction took 8858.14 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 227.0 MB). Free memory was 1.1 GB in the beginning and 875.4 MB in the end (delta: 195.1 MB). Peak memory consumption was 422.1 MB. Max. memory is 11.5 GB. [2019-12-07 17:13:56,452 INFO L168 Benchmark]: Witness Printer took 35.90 ms. Allocated memory is still 1.3 GB. Free memory was 875.4 MB in the beginning and 872.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:13:56,453 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 132.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8858.14 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 227.0 MB). Free memory was 1.1 GB in the beginning and 875.4 MB in the end (delta: 195.1 MB). Peak memory consumption was 422.1 MB. Max. memory is 11.5 GB. * Witness Printer took 35.90 ms. Allocated memory is still 1.3 GB. Free memory was 875.4 MB in the beginning and 872.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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: 23]: Loop Invariant Derived loop invariant: 7 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 7.9s, OverallIterations: 11, TraceHistogramMax: 51, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, HoareTripleCheckerStatistics: 225 SDtfs, 419 SDslu, 1262 SDs, 0 SdLazy, 1989 SolverSat, 500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1441 SyntacticMatches, 23 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=244occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 387 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 566 PreInvPairs, 1154 NumberOfFragments, 120 HoareAnnotationTreeSize, 566 FomulaSimplifications, 23918 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5516 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2201 NumberOfCodeBlocks, 2162 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 2181 ConstructedInterpolants, 0 QuantifiedInterpolants, 1246379 SizeOfPredicates, 38 NumberOfNonLiveVariables, 2341 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 21385/28512 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...