./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/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 45b185c6c694406b0734db5727dff1b8fd93ebcf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:02:20,615 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:02:20,616 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:02:20,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:02:20,625 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:02:20,626 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:02:20,626 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:02:20,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:02:20,629 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:02:20,629 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:02:20,630 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:02:20,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:02:20,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:02:20,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:02:20,632 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:02:20,633 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:02:20,634 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:02:20,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:02:20,636 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:02:20,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:02:20,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:02:20,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:02:20,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:02:20,641 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:02:20,641 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:02:20,642 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:02:20,642 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:02:20,643 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:02:20,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:02:20,644 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:02:20,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:02:20,645 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:02:20,645 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:02:20,645 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:02:20,646 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:02:20,646 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:02:20,646 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:02:20,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:02:20,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:02:20,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:02:20,657 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:02:20,658 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:02:20,658 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:02:20,658 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:02:20,658 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:02:20,658 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:02:20,659 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:02:20,660 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:02:20,660 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:02:20,660 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:02:20,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:02:20,660 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:02:20,660 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:02:20,660 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:02:20,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:02:20,661 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:02:20,661 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:02:20,661 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:02:20,661 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:02:20,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:02:20,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:02:20,662 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/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 -> 45b185c6c694406b0734db5727dff1b8fd93ebcf [2018-11-28 13:02:20,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:02:20,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:02:20,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:02:20,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:02:20,698 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:02:20,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 13:02:20,740 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/data/67686cf2c/45f161330c674c66938dce149f60dcd5/FLAG40fcb578d [2018-11-28 13:02:21,134 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:02:21,134 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 13:02:21,138 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/data/67686cf2c/45f161330c674c66938dce149f60dcd5/FLAG40fcb578d [2018-11-28 13:02:21,146 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/data/67686cf2c/45f161330c674c66938dce149f60dcd5 [2018-11-28 13:02:21,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:02:21,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:02:21,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:02:21,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:02:21,151 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:02:21,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd248c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21, skipping insertion in model container [2018-11-28 13:02:21,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:02:21,172 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:02:21,291 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:02:21,295 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:02:21,322 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:02:21,331 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:02:21,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21 WrapperNode [2018-11-28 13:02:21,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:02:21,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:02:21,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:02:21,332 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:02:21,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:02:21,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:02:21,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:02:21,384 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:02:21,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... [2018-11-28 13:02:21,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:02:21,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:02:21,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:02:21,403 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:02:21,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/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 [2018-11-28 13:02:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:02:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:02:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2018-11-28 13:02:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2018-11-28 13:02:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2018-11-28 13:02:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2018-11-28 13:02:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:02:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:02:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:02:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:02:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 13:02:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 13:02:21,662 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:02:21,662 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 13:02:21,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:02:21 BoogieIcfgContainer [2018-11-28 13:02:21,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:02:21,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:02:21,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:02:21,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:02:21,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:02:21" (1/3) ... [2018-11-28 13:02:21,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fcf97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:02:21, skipping insertion in model container [2018-11-28 13:02:21,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:02:21" (2/3) ... [2018-11-28 13:02:21,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fcf97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:02:21, skipping insertion in model container [2018-11-28 13:02:21,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:02:21" (3/3) ... [2018-11-28 13:02:21,669 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 13:02:21,677 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:02:21,684 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:02:21,698 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:02:21,724 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:02:21,724 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:02:21,724 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:02:21,724 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:02:21,725 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:02:21,725 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:02:21,725 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:02:21,725 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:02:21,725 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:02:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-11-28 13:02:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-28 13:02:21,747 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:21,747 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:21,749 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:21,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash -848954410, now seen corresponding path program 1 times [2018-11-28 13:02:21,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:21,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:21,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:21,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:21,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-28 13:02:21,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:02:21,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:02:21,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 13:02:21,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:02:21,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:02:21,917 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2018-11-28 13:02:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:21,949 INFO L93 Difference]: Finished difference Result 118 states and 174 transitions. [2018-11-28 13:02:21,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:02:21,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-28 13:02:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:21,957 INFO L225 Difference]: With dead ends: 118 [2018-11-28 13:02:21,957 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 13:02:21,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:02:21,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 13:02:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-28 13:02:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 13:02:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2018-11-28 13:02:21,986 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 48 [2018-11-28 13:02:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:21,987 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2018-11-28 13:02:21,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 13:02:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2018-11-28 13:02:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 13:02:21,989 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:21,990 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:21,990 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:21,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash -796554308, now seen corresponding path program 1 times [2018-11-28 13:02:21,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:21,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:21,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:21,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:21,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-28 13:02:22,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:02:22,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:02:22,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:02:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:02:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:02:22,061 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand 4 states. [2018-11-28 13:02:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:22,101 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2018-11-28 13:02:22,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:02:22,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-28 13:02:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:22,103 INFO L225 Difference]: With dead ends: 64 [2018-11-28 13:02:22,103 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 13:02:22,104 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:02:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 13:02:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-28 13:02:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 13:02:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2018-11-28 13:02:22,110 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 50 [2018-11-28 13:02:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:22,110 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2018-11-28 13:02:22,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:02:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2018-11-28 13:02:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 13:02:22,111 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:22,111 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:22,112 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:22,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:22,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1817622662, now seen corresponding path program 1 times [2018-11-28 13:02:22,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:22,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:22,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:22,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:22,179 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:22,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:22,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:22,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2018-11-28 13:02:22,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:02:22,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:02:22,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:02:22,315 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand 9 states. [2018-11-28 13:02:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:22,500 INFO L93 Difference]: Finished difference Result 147 states and 207 transitions. [2018-11-28 13:02:22,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:02:22,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-11-28 13:02:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:22,503 INFO L225 Difference]: With dead ends: 147 [2018-11-28 13:02:22,503 INFO L226 Difference]: Without dead ends: 103 [2018-11-28 13:02:22,504 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:02:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-28 13:02:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 82. [2018-11-28 13:02:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-28 13:02:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2018-11-28 13:02:22,517 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 112 transitions. Word has length 50 [2018-11-28 13:02:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:22,517 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 112 transitions. [2018-11-28 13:02:22,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:02:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 112 transitions. [2018-11-28 13:02:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-28 13:02:22,518 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:22,519 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:22,519 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:22,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:22,519 INFO L82 PathProgramCache]: Analyzing trace with hash -30301019, now seen corresponding path program 1 times [2018-11-28 13:02:22,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:22,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:22,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:22,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:22,552 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:22,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:02:22,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:02:22,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-11-28 13:02:22,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:02:22,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:02:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:02:22,614 INFO L87 Difference]: Start difference. First operand 82 states and 112 transitions. Second operand 4 states. [2018-11-28 13:02:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:22,664 INFO L93 Difference]: Finished difference Result 161 states and 225 transitions. [2018-11-28 13:02:22,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:02:22,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-28 13:02:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:22,668 INFO L225 Difference]: With dead ends: 161 [2018-11-28 13:02:22,668 INFO L226 Difference]: Without dead ends: 97 [2018-11-28 13:02:22,669 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:02:22,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-28 13:02:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-11-28 13:02:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-28 13:02:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2018-11-28 13:02:22,681 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 55 [2018-11-28 13:02:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:22,681 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2018-11-28 13:02:22,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:02:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2018-11-28 13:02:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 13:02:22,684 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:22,684 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:22,684 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:22,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash 410874573, now seen corresponding path program 1 times [2018-11-28 13:02:22,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:22,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:22,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:22,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:22,721 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:22,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:02:22,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:02:22,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-11-28 13:02:22,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:02:22,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:02:22,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:02:22,770 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 4 states. [2018-11-28 13:02:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:22,832 INFO L93 Difference]: Finished difference Result 175 states and 249 transitions. [2018-11-28 13:02:22,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:02:22,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-28 13:02:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:22,833 INFO L225 Difference]: With dead ends: 175 [2018-11-28 13:02:22,833 INFO L226 Difference]: Without dead ends: 106 [2018-11-28 13:02:22,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:02:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-28 13:02:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2018-11-28 13:02:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-28 13:02:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2018-11-28 13:02:22,847 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 56 [2018-11-28 13:02:22,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:22,849 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2018-11-28 13:02:22,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:02:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2018-11-28 13:02:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-28 13:02:22,850 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:22,850 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:22,850 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:22,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:22,851 INFO L82 PathProgramCache]: Analyzing trace with hash -227603191, now seen corresponding path program 1 times [2018-11-28 13:02:22,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:22,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:22,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:22,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:22,922 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:22,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:22,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-28 13:02:22,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 13:02:22,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-28 13:02:22,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:02:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:02:22,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:02:22,990 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand 9 states. [2018-11-28 13:02:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:23,181 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2018-11-28 13:02:23,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:02:23,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2018-11-28 13:02:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:23,183 INFO L225 Difference]: With dead ends: 185 [2018-11-28 13:02:23,184 INFO L226 Difference]: Without dead ends: 99 [2018-11-28 13:02:23,184 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:02:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-28 13:02:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2018-11-28 13:02:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 13:02:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2018-11-28 13:02:23,195 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 56 [2018-11-28 13:02:23,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:23,195 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2018-11-28 13:02:23,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:02:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2018-11-28 13:02:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 13:02:23,197 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:23,197 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:23,198 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:23,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash 743896390, now seen corresponding path program 1 times [2018-11-28 13:02:23,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:23,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:23,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:23,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:23,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:23,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:23,258 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:23,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:23,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 13:02:23,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:23,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 12 [2018-11-28 13:02:23,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:02:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:02:23,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:02:23,397 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand 12 states. [2018-11-28 13:02:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:26,146 INFO L93 Difference]: Finished difference Result 187 states and 254 transitions. [2018-11-28 13:02:26,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-28 13:02:26,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2018-11-28 13:02:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:26,147 INFO L225 Difference]: With dead ends: 187 [2018-11-28 13:02:26,147 INFO L226 Difference]: Without dead ends: 110 [2018-11-28 13:02:26,148 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:02:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-28 13:02:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 85. [2018-11-28 13:02:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-28 13:02:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2018-11-28 13:02:26,161 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 57 [2018-11-28 13:02:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:26,161 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2018-11-28 13:02:26,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:02:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2018-11-28 13:02:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-28 13:02:26,162 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:26,162 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:26,162 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:26,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:26,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2063636268, now seen corresponding path program 1 times [2018-11-28 13:02:26,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:26,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:26,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:26,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:26,212 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:26,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:26,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:02:26,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:26,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:02:26,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:02:26,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:02:26,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:02:26,279 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand 5 states. [2018-11-28 13:02:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:26,319 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2018-11-28 13:02:26,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:02:26,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2018-11-28 13:02:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:26,320 INFO L225 Difference]: With dead ends: 169 [2018-11-28 13:02:26,321 INFO L226 Difference]: Without dead ends: 94 [2018-11-28 13:02:26,321 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:02:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-28 13:02:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2018-11-28 13:02:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 13:02:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2018-11-28 13:02:26,331 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 58 [2018-11-28 13:02:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:26,332 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2018-11-28 13:02:26,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:02:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2018-11-28 13:02:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-28 13:02:26,333 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:26,333 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:26,334 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:26,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2121428149, now seen corresponding path program 1 times [2018-11-28 13:02:26,334 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:26,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:26,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:26,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:26,398 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:26,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:26,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:02:26,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:26,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2018-11-28 13:02:26,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:02:26,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:02:26,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:02:26,523 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand 11 states. [2018-11-28 13:02:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:26,736 INFO L93 Difference]: Finished difference Result 198 states and 267 transitions. [2018-11-28 13:02:26,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 13:02:26,737 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2018-11-28 13:02:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:26,737 INFO L225 Difference]: With dead ends: 198 [2018-11-28 13:02:26,738 INFO L226 Difference]: Without dead ends: 111 [2018-11-28 13:02:26,738 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:02:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-28 13:02:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2018-11-28 13:02:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-28 13:02:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2018-11-28 13:02:26,747 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 60 [2018-11-28 13:02:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:26,747 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2018-11-28 13:02:26,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:02:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2018-11-28 13:02:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-28 13:02:26,748 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:26,748 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:26,748 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:26,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:26,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1179266224, now seen corresponding path program 1 times [2018-11-28 13:02:26,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:26,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:26,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:26,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:26,785 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:26,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:26,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:02:26,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:26,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:02:26,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:02:26,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:02:26,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:02:26,826 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand 6 states. [2018-11-28 13:02:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:26,910 INFO L93 Difference]: Finished difference Result 182 states and 239 transitions. [2018-11-28 13:02:26,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:02:26,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2018-11-28 13:02:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:26,912 INFO L225 Difference]: With dead ends: 182 [2018-11-28 13:02:26,912 INFO L226 Difference]: Without dead ends: 104 [2018-11-28 13:02:26,913 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:02:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-28 13:02:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2018-11-28 13:02:26,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-28 13:02:26,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2018-11-28 13:02:26,924 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 62 [2018-11-28 13:02:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:26,924 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2018-11-28 13:02:26,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:02:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2018-11-28 13:02:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-28 13:02:26,925 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:26,925 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:26,925 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:26,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:26,926 INFO L82 PathProgramCache]: Analyzing trace with hash -430731599, now seen corresponding path program 1 times [2018-11-28 13:02:26,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:26,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:26,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:26,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:27,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:27,017 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:27,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:27,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:02:27,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:27,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2018-11-28 13:02:27,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 13:02:27,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 13:02:27,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:02:27,192 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand 14 states. [2018-11-28 13:02:27,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:27,773 INFO L93 Difference]: Finished difference Result 198 states and 263 transitions. [2018-11-28 13:02:27,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-28 13:02:27,774 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2018-11-28 13:02:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:27,775 INFO L225 Difference]: With dead ends: 198 [2018-11-28 13:02:27,775 INFO L226 Difference]: Without dead ends: 113 [2018-11-28 13:02:27,776 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:02:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-28 13:02:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76. [2018-11-28 13:02:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 13:02:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2018-11-28 13:02:27,786 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 64 [2018-11-28 13:02:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:27,787 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2018-11-28 13:02:27,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 13:02:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2018-11-28 13:02:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-28 13:02:27,788 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:27,788 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:27,788 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:27,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash -589993096, now seen corresponding path program 1 times [2018-11-28 13:02:27,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:27,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:27,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:27,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:27,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:27,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:27,870 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:27,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:27,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:02:27,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:27,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:02:27,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:02:27,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:02:27,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:02:27,941 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 7 states. [2018-11-28 13:02:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:28,067 INFO L93 Difference]: Finished difference Result 165 states and 209 transitions. [2018-11-28 13:02:28,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:02:28,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2018-11-28 13:02:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:28,070 INFO L225 Difference]: With dead ends: 165 [2018-11-28 13:02:28,070 INFO L226 Difference]: Without dead ends: 99 [2018-11-28 13:02:28,070 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:02:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-28 13:02:28,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2018-11-28 13:02:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-28 13:02:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2018-11-28 13:02:28,082 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 69 [2018-11-28 13:02:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:28,083 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2018-11-28 13:02:28,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:02:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2018-11-28 13:02:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-28 13:02:28,083 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:28,083 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:28,084 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:28,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash 943129273, now seen corresponding path program 1 times [2018-11-28 13:02:28,084 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:28,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:28,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:28,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:28,183 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:28,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:28,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-28 13:02:28,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:28,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2018-11-28 13:02:28,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 13:02:28,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 13:02:28,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:02:28,339 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 16 states. [2018-11-28 13:02:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:28,858 INFO L93 Difference]: Finished difference Result 201 states and 262 transitions. [2018-11-28 13:02:28,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-28 13:02:28,858 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2018-11-28 13:02:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:28,859 INFO L225 Difference]: With dead ends: 201 [2018-11-28 13:02:28,859 INFO L226 Difference]: Without dead ends: 133 [2018-11-28 13:02:28,860 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:02:28,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-28 13:02:28,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2018-11-28 13:02:28,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-28 13:02:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2018-11-28 13:02:28,869 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 71 [2018-11-28 13:02:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:28,869 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2018-11-28 13:02:28,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 13:02:28,869 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2018-11-28 13:02:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 13:02:28,870 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:28,870 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:28,870 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:28,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:28,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1201821761, now seen corresponding path program 1 times [2018-11-28 13:02:28,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:28,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:28,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:28,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:28,903 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:28,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:28,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:02:28,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:28,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:02:28,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:02:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:02:28,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:02:28,960 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand 8 states. [2018-11-28 13:02:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:29,029 INFO L93 Difference]: Finished difference Result 212 states and 279 transitions. [2018-11-28 13:02:29,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:02:29,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2018-11-28 13:02:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:29,030 INFO L225 Difference]: With dead ends: 212 [2018-11-28 13:02:29,030 INFO L226 Difference]: Without dead ends: 126 [2018-11-28 13:02:29,031 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:02:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-11-28 13:02:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2018-11-28 13:02:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-28 13:02:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2018-11-28 13:02:29,039 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 72 [2018-11-28 13:02:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:29,040 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2018-11-28 13:02:29,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:02:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2018-11-28 13:02:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 13:02:29,041 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:29,041 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:29,041 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:29,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 903805378, now seen corresponding path program 1 times [2018-11-28 13:02:29,041 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:29,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:29,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:29,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-28 13:02:29,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:29,121 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:29,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:29,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-28 13:02:29,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:29,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2018-11-28 13:02:29,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 13:02:29,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 13:02:29,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-11-28 13:02:29,268 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand 17 states. [2018-11-28 13:02:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:32,242 INFO L93 Difference]: Finished difference Result 222 states and 293 transitions. [2018-11-28 13:02:32,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-28 13:02:32,243 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2018-11-28 13:02:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:32,244 INFO L225 Difference]: With dead ends: 222 [2018-11-28 13:02:32,244 INFO L226 Difference]: Without dead ends: 112 [2018-11-28 13:02:32,244 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 13:02:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-28 13:02:32,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 79. [2018-11-28 13:02:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 13:02:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2018-11-28 13:02:32,250 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 74 [2018-11-28 13:02:32,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:32,250 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2018-11-28 13:02:32,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 13:02:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2018-11-28 13:02:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-28 13:02:32,251 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:32,251 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:32,251 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:32,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash 613414087, now seen corresponding path program 2 times [2018-11-28 13:02:32,252 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:32,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:32,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:32,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:32,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 13:02:32,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:32,289 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:32,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:02:32,420 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:02:32,420 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:02:32,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 13:02:32,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:32,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:02:32,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:02:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:02:32,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:02:32,446 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 9 states. [2018-11-28 13:02:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:32,500 INFO L93 Difference]: Finished difference Result 173 states and 212 transitions. [2018-11-28 13:02:32,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:02:32,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2018-11-28 13:02:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:32,501 INFO L225 Difference]: With dead ends: 173 [2018-11-28 13:02:32,501 INFO L226 Difference]: Without dead ends: 101 [2018-11-28 13:02:32,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:02:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-28 13:02:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2018-11-28 13:02:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-28 13:02:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2018-11-28 13:02:32,508 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 79 [2018-11-28 13:02:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:32,509 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2018-11-28 13:02:32,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:02:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2018-11-28 13:02:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-28 13:02:32,509 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:32,510 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:32,510 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:32,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:32,510 INFO L82 PathProgramCache]: Analyzing trace with hash -847324280, now seen corresponding path program 2 times [2018-11-28 13:02:32,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:32,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:32,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:32,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:32,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 13:02:32,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:32,590 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:32,596 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:02:32,622 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:02:32,623 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:02:32,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-28 13:02:32,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:32,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2018-11-28 13:02:32,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:02:32,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:02:32,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:02:32,742 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand 18 states. [2018-11-28 13:02:33,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:33,184 INFO L93 Difference]: Finished difference Result 182 states and 228 transitions. [2018-11-28 13:02:33,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-28 13:02:33,185 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 81 [2018-11-28 13:02:33,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:33,185 INFO L225 Difference]: With dead ends: 182 [2018-11-28 13:02:33,186 INFO L226 Difference]: Without dead ends: 106 [2018-11-28 13:02:33,186 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:02:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-28 13:02:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2018-11-28 13:02:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-28 13:02:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2018-11-28 13:02:33,196 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 81 [2018-11-28 13:02:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:33,196 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2018-11-28 13:02:33,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:02:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2018-11-28 13:02:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-28 13:02:33,197 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:33,197 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:33,197 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:33,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash 354457994, now seen corresponding path program 1 times [2018-11-28 13:02:33,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:33,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:33,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:33,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:02:33,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 67 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:02:33,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:33,270 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:33,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:33,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 26 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 13:02:33,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:33,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:02:33,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:02:33,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:02:33,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:02:33,345 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 10 states. [2018-11-28 13:02:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:33,464 INFO L93 Difference]: Finished difference Result 189 states and 231 transitions. [2018-11-28 13:02:33,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:02:33,464 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2018-11-28 13:02:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:33,465 INFO L225 Difference]: With dead ends: 189 [2018-11-28 13:02:33,465 INFO L226 Difference]: Without dead ends: 111 [2018-11-28 13:02:33,466 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:02:33,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-28 13:02:33,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2018-11-28 13:02:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 13:02:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2018-11-28 13:02:33,477 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 82 [2018-11-28 13:02:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:33,477 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2018-11-28 13:02:33,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:02:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2018-11-28 13:02:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-28 13:02:33,478 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:33,478 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:33,478 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:33,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:33,478 INFO L82 PathProgramCache]: Analyzing trace with hash -481117557, now seen corresponding path program 1 times [2018-11-28 13:02:33,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:33,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:33,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:33,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:33,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:02:33,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:33,629 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:33,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:33,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-28 13:02:33,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:33,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-28 13:02:33,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 13:02:33,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 13:02:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:02:33,845 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand 19 states. [2018-11-28 13:02:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:34,283 INFO L93 Difference]: Finished difference Result 197 states and 242 transitions. [2018-11-28 13:02:34,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-28 13:02:34,283 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2018-11-28 13:02:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:34,284 INFO L225 Difference]: With dead ends: 197 [2018-11-28 13:02:34,284 INFO L226 Difference]: Without dead ends: 110 [2018-11-28 13:02:34,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2018-11-28 13:02:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-28 13:02:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2018-11-28 13:02:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-28 13:02:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2018-11-28 13:02:34,293 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 84 [2018-11-28 13:02:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:34,293 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2018-11-28 13:02:34,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 13:02:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2018-11-28 13:02:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-28 13:02:34,293 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:34,293 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:34,294 INFO L423 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:34,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:34,294 INFO L82 PathProgramCache]: Analyzing trace with hash 887832869, now seen corresponding path program 1 times [2018-11-28 13:02:34,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:34,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:34,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:34,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:34,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 87 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:02:34,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:34,369 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:34,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:34,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 26 proven. 77 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 13:02:34,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:34,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:02:34,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:02:34,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:02:34,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:02:34,436 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand 11 states. [2018-11-28 13:02:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:34,505 INFO L93 Difference]: Finished difference Result 199 states and 242 transitions. [2018-11-28 13:02:34,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:02:34,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2018-11-28 13:02:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:34,505 INFO L225 Difference]: With dead ends: 199 [2018-11-28 13:02:34,506 INFO L226 Difference]: Without dead ends: 118 [2018-11-28 13:02:34,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:02:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-11-28 13:02:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 90. [2018-11-28 13:02:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-28 13:02:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2018-11-28 13:02:34,519 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 85 [2018-11-28 13:02:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:34,519 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2018-11-28 13:02:34,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:02:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2018-11-28 13:02:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-28 13:02:34,520 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:02:34,520 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:02:34,520 INFO L423 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:02:34,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:02:34,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1299513318, now seen corresponding path program 1 times [2018-11-28 13:02:34,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:02:34,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:02:34,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:34,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:34,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:02:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 95 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:02:34,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:02:34,652 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:02:34,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:02:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:02:34,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:02:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-28 13:02:34,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:02:34,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-11-28 13:02:34,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:02:34,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:02:34,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:02:34,856 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 20 states. [2018-11-28 13:02:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:02:35,466 INFO L93 Difference]: Finished difference Result 184 states and 226 transitions. [2018-11-28 13:02:35,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-28 13:02:35,466 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 87 [2018-11-28 13:02:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:02:35,466 INFO L225 Difference]: With dead ends: 184 [2018-11-28 13:02:35,466 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:02:35,467 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:02:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:02:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:02:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:02:35,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:02:35,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2018-11-28 13:02:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:02:35,468 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:02:35,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:02:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:02:35,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:02:35,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:02:35,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,619 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 56 [2018-11-28 13:02:35,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:35,962 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 66 [2018-11-28 13:02:36,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,168 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 76 [2018-11-28 13:02:36,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:02:36,586 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 77 [2018-11-28 13:02:41,393 WARN L180 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-28 13:02:41,777 WARN L180 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 22 [2018-11-28 13:02:41,792 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point mulfltEXIT(lines 137 209) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point L184(lines 184 201) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point L184-2(lines 184 201) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point L193(lines 193 198) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point mulfltFINAL(lines 137 209) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L451 ceAbstractionStarter]: At program point mulfltENTRY(lines 137 209) the Hoare annotation is: true [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point L185(lines 185 190) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point L148(lines 148 154) no Hoare annotation was computed. [2018-11-28 13:02:41,792 INFO L448 ceAbstractionStarter]: For program point L148-2(lines 147 208) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L175(lines 175 180) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L444 ceAbstractionStarter]: At program point L206(lines 147 208) the Hoare annotation is: (let ((.cse0 (= 0 mulflt_~__retres10~1)) (.cse3 (not (= 0 (mod |mulflt_#in~b| 4294967296)))) (.cse2 (mod |mulflt_#in~a| 4294967296))) (or (and (exists ((v_mulflt_~a_6 Int)) (< (mod v_mulflt_~a_6 4294967296) (mod |mulflt_#in~b| 4294967296))) .cse0) (and (exists ((mulflt_~b Int)) (let ((.cse1 (mod mulflt_~b 4294967296))) (and (<= .cse1 (mod |mulflt_#in~a| 4294967296)) (not (= .cse1 0))))) (<= (mod mulflt_~b 4294967296) .cse2) (= mulflt_~a |mulflt_#in~a|) .cse3) (and (= mulflt_~b |mulflt_#in~b|) .cse0) (and (= mulflt_~b |mulflt_#in~a|) .cse3 (not (= .cse2 0))))) [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L169(lines 169 174) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 24) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L48(lines 47 62) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L444 ceAbstractionStarter]: At program point L69(lines 18 71) the Hoare annotation is: (let ((.cse0 (<= |base2flt_#in~e| base2flt_~e)) (.cse1 (<= base2flt_~e |base2flt_#in~e|))) (or (and (= 0 base2flt_~__retres4~0) .cse0 (= base2flt_~m |base2flt_#in~m|) .cse1) (or (<= (+ |base2flt_#in~m| 4261412865) 0) (<= 16777216 |base2flt_#in~m|)) (and .cse0 (<= (+ |base2flt_#in~e| 128) 0)) (and (<= 127 |base2flt_#in~e|) .cse1) (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296)))))) [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L28(lines 27 42) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L49(lines 47 62) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L444 ceAbstractionStarter]: At program point L37-1(lines 27 42) the Hoare annotation is: (and (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296)))) (<= base2flt_~e |base2flt_#in~e|)) [2018-11-28 13:02:41,793 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 65) no Hoare annotation was computed. [2018-11-28 13:02:41,793 INFO L451 ceAbstractionStarter]: At program point base2fltENTRY(lines 14 72) the Hoare annotation is: true [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point base2fltFINAL(lines 14 72) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L444 ceAbstractionStarter]: At program point L63(lines 25 65) the Hoare annotation is: (or (let ((.cse1 (div base2flt_~m 4294967296))) (let ((.cse0 (+ .cse1 1))) (and (or (<= |base2flt_#in~m| base2flt_~m) (< 0 .cse0)) (or (<= .cse0 0) (<= (+ (* 4294967296 .cse1) 16777216) |base2flt_#in~m|))))) (forall ((base2flt_~m Int)) (or (< base2flt_~m |base2flt_#in~m|) (< |base2flt_#in~m| base2flt_~m) (< 0 (mod base2flt_~m 4294967296))))) [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point base2fltEXIT(lines 14 72) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L444 ceAbstractionStarter]: At program point L47-2(lines 47 62) the Hoare annotation is: (let ((.cse2 (div base2flt_~m 4294967296))) (let ((.cse0 (+ .cse2 1))) (let ((.cse1 (<= .cse0 0))) (and (<= |base2flt_#in~e| base2flt_~e) (or (<= |base2flt_#in~m| base2flt_~m) (< 0 .cse0)) (or .cse1 (<= (+ (* 4294967296 .cse2) 16777216) |base2flt_#in~m|)) (or (<= base2flt_~m |base2flt_#in~m|) .cse1))))) [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:02:41,794 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point L250(lines 250 254) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 210 266) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point L250-2(lines 250 254) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point L246(lines 246 262) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point L246-1(lines 246 262) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point L244(line 244) no Hoare annotation was computed. [2018-11-28 13:02:41,794 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 210 266) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L236(lines 236 240) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L236-2(lines 236 240) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L444 ceAbstractionStarter]: At program point L230(line 230) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L230-1(line 230) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L451 ceAbstractionStarter]: At program point L228(line 228) the Hoare annotation is: true [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L228-1(line 228) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 210 266) the Hoare annotation is: true [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L247(lines 247 256) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L444 ceAbstractionStarter]: At program point L247-2(lines 247 256) the Hoare annotation is: (and (= main_~tmp___1~0 0) (= main_~tmp___0~0 0)) [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L233(lines 233 242) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L444 ceAbstractionStarter]: At program point L231(line 231) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-28 13:02:41,795 INFO L444 ceAbstractionStarter]: At program point L233-2(lines 233 242) the Hoare annotation is: (let ((.cse0 (= 0 main_~zero~0))) (or (and (= main_~b~0 0) .cse0) (and (<= 1 main_~tmp~2) (<= 1 main_~sa~0)) (and (<= (mod main_~a~0 4294967296) 0) .cse0) (<= (+ main_~sa~0 1) 0))) [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L231-1(line 231) no Hoare annotation was computed. [2018-11-28 13:02:41,795 INFO L444 ceAbstractionStarter]: At program point L229(line 229) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-28 13:02:41,795 INFO L448 ceAbstractionStarter]: For program point L229-1(line 229) no Hoare annotation was computed. [2018-11-28 13:02:41,796 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-11-28 13:02:41,796 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2018-11-28 13:02:41,796 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2018-11-28 13:02:41,796 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-28 13:02:41,796 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2018-11-28 13:02:41,796 INFO L448 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2018-11-28 13:02:41,800 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,801 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,801 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,809 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,809 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,809 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,810 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,810 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,811 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,811 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,811 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,811 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,813 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-28 13:02:41,813 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,813 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,814 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-28 13:02:41,814 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,814 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,815 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,815 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,815 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,816 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,816 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,816 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:02:41 BoogieIcfgContainer [2018-11-28 13:02:41,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:02:41,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:02:41,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:02:41,818 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:02:41,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:02:21" (3/4) ... [2018-11-28 13:02:41,821 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:02:41,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:02:41,827 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mulflt [2018-11-28 13:02:41,827 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2018-11-28 13:02:41,827 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:02:41,827 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 13:02:41,831 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-28 13:02:41,831 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-28 13:02:41,832 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:02:41,856 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0 == __retres4 && \old(e) <= e) && m == \old(m)) && e <= \old(e)) || \old(m) + 4261412865 <= 0 || 16777216 <= \old(m)) || (\old(e) <= e && \old(e) + 128 <= 0)) || (127 <= \old(e) && e <= \old(e))) || (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) [2018-11-28 13:02:41,856 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) && e <= \old(e) [2018-11-28 13:02:41,856 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\old(e) <= e && (\old(m) <= m || 0 < m / 4294967296 + 1)) && (m / 4294967296 + 1 <= 0 || 4294967296 * (m / 4294967296) + 16777216 <= \old(m))) && (m <= \old(m) || m / 4294967296 + 1 <= 0) [2018-11-28 13:02:41,856 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\old(m) <= m || 0 < m / 4294967296 + 1) && (m / 4294967296 + 1 <= 0 || 4294967296 * (m / 4294967296) + 16777216 <= \old(m))) || (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) [2018-11-28 13:02:41,857 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\exists v_mulflt_~a_6 : int :: v_mulflt_~a_6 % 4294967296 < \old(b) % 4294967296) && 0 == __retres10) || ((((\exists mulflt_~b : int :: mulflt_~b % 4294967296 <= \old(a) % 4294967296 && !(mulflt_~b % 4294967296 == 0)) && b % 4294967296 <= \old(a) % 4294967296) && a == \old(a)) && !(0 == \old(b) % 4294967296))) || (b == \old(b) && 0 == __retres10)) || ((b == \old(a) && !(0 == \old(b) % 4294967296)) && !(\old(a) % 4294967296 == 0)) [2018-11-28 13:02:41,880 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_60d89add-ebfb-4fcd-a8d8-4b29a3b36fa5/bin-2019/uautomizer/witness.graphml [2018-11-28 13:02:41,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:02:41,881 INFO L168 Benchmark]: Toolchain (without parser) took 20732.50 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 429.4 MB). Free memory was 953.3 MB in the beginning and 1.3 GB in the end (delta: -297.8 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:02:41,881 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:02:41,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.85 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 939.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 13:02:41,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:02:41,882 INFO L168 Benchmark]: Boogie Preprocessor took 19.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:02:41,882 INFO L168 Benchmark]: RCFGBuilder took 258.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:02:41,882 INFO L168 Benchmark]: TraceAbstraction took 20154.56 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 288.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -138.7 MB). Peak memory consumption was 495.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:02:41,883 INFO L168 Benchmark]: Witness Printer took 62.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:02:41,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.85 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 939.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 258.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20154.56 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 288.4 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -138.7 MB). Peak memory consumption was 495.7 MB. Max. memory is 11.5 GB. * Witness Printer took 62.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 25]: Loop Invariant [2018-11-28 13:02:41,887 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,887 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,887 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,888 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,888 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,888 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: ((\old(m) <= m || 0 < m / 4294967296 + 1) && (m / 4294967296 + 1 <= 0 || 4294967296 * (m / 4294967296) + 16777216 <= \old(m))) || (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) - InvariantResult [Line: 18]: Loop Invariant [2018-11-28 13:02:41,888 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,888 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,889 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,890 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,890 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,890 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: ((((((0 == __retres4 && \old(e) <= e) && m == \old(m)) && e <= \old(e)) || \old(m) + 4261412865 <= 0 || 16777216 <= \old(m)) || (\old(e) <= e && \old(e) + 128 <= 0)) || (127 <= \old(e) && e <= \old(e))) || (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) - InvariantResult [Line: 147]: Loop Invariant [2018-11-28 13:02:41,891 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-28 13:02:41,891 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,891 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,892 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-28 13:02:41,892 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-28 13:02:41,892 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] Derived loop invariant: ((((\exists v_mulflt_~a_6 : int :: v_mulflt_~a_6 % 4294967296 < \old(b) % 4294967296) && 0 == __retres10) || ((((\exists mulflt_~b : int :: mulflt_~b % 4294967296 <= \old(a) % 4294967296 && !(mulflt_~b % 4294967296 == 0)) && b % 4294967296 <= \old(a) % 4294967296) && a == \old(a)) && !(0 == \old(b) % 4294967296))) || (b == \old(b) && 0 == __retres10)) || ((b == \old(a) && !(0 == \old(b) % 4294967296)) && !(\old(a) % 4294967296 == 0)) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((\old(e) <= e && (\old(m) <= m || 0 < m / 4294967296 + 1)) && (m / 4294967296 + 1 <= 0 || 4294967296 * (m / 4294967296) + 16777216 <= \old(m))) && (m <= \old(m) || m / 4294967296 + 1 <= 0) - InvariantResult [Line: 27]: Loop Invariant [2018-11-28 13:02:41,893 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,893 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,893 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,893 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,893 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-28 13:02:41,893 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] Derived loop invariant: (forall base2flt_~m : int :: (base2flt_~m < \old(m) || \old(m) < base2flt_~m) || 0 < base2flt_~m % 4294967296) && e <= \old(e) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. SAFE Result, 20.0s OverallTime, 21 OverallIterations, 8 TraceHistogramMax, 9.7s AutomataDifference, 0.0s DeadEndRemovalTime, 6.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 1305 SDtfs, 1053 SDslu, 8656 SDs, 0 SdLazy, 5346 SolverSat, 146 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1615 GetRequests, 1287 SyntacticMatches, 11 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 392 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 407 PreInvPairs, 1346 NumberOfFragments, 285 HoareAnnotationTreeSize, 407 FomulaSimplifications, 840292544 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 18 FomulaSimplificationsInter, 103597 FormulaSimplificationTreeSizeReductionInter, 4.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2702 NumberOfCodeBlocks, 2702 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 2662 ConstructedInterpolants, 36 QuantifiedInterpolants, 440968 SizeOfPredicates, 53 NumberOfNonLiveVariables, 3493 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 40 InterpolantComputations, 5 PerfectInterpolantSequences, 1241/2228 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...