./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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-aa41828 [2018-11-23 15:30:08,868 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:30:08,869 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:30:08,876 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:30:08,876 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:30:08,877 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:30:08,877 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:30:08,878 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:30:08,879 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:30:08,880 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:30:08,881 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:30:08,881 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:30:08,882 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:30:08,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:30:08,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:30:08,883 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:30:08,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:30:08,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:30:08,886 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:30:08,887 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:30:08,888 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:30:08,889 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:30:08,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:30:08,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:30:08,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:30:08,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:30:08,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:30:08,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:30:08,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:30:08,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:30:08,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:30:08,895 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:30:08,895 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:30:08,895 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:30:08,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:30:08,896 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:30:08,896 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 15:30:08,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:30:08,906 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:30:08,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:30:08,907 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:30:08,907 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:30:08,907 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:30:08,908 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:30:08,908 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:30:08,908 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:30:08,908 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:30:08,908 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:30:08,908 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:30:08,908 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:30:08,909 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:30:08,909 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:30:08,909 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:30:08,909 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:30:08,909 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:30:08,909 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:30:08,909 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:30:08,910 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:30:08,910 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:30:08,910 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:30:08,910 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:30:08,910 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:30:08,910 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:30:08,910 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:30:08,911 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:30:08,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:30:08,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 15:30:08,911 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_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:08,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:30:08,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:30:08,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:30:08,944 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:30:08,944 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:30:08,945 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-23 15:30:08,979 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/data/534195263/416a91803c0a41a29c8c18cdb9dd596a/FLAG439f7aa8b [2018-11-23 15:30:09,382 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:30:09,383 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-23 15:30:09,387 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/data/534195263/416a91803c0a41a29c8c18cdb9dd596a/FLAG439f7aa8b [2018-11-23 15:30:09,399 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/data/534195263/416a91803c0a41a29c8c18cdb9dd596a [2018-11-23 15:30:09,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:30:09,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:30:09,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:30:09,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:30:09,404 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:30:09,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325aa0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09, skipping insertion in model container [2018-11-23 15:30:09,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:30:09,437 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:30:09,581 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:30:09,583 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:30:09,610 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:30:09,621 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:30:09,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09 WrapperNode [2018-11-23 15:30:09,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:30:09,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:30:09,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:30:09,622 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:30:09,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:30:09,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:30:09,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:30:09,670 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:30:09,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... [2018-11-23 15:30:09,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:30:09,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:30:09,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:30:09,692 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:30:09,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 15:30:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 15:30:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2018-11-23 15:30:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2018-11-23 15:30:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2018-11-23 15:30:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2018-11-23 15:30:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:30:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:30:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 15:30:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 15:30:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 15:30:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 15:30:09,924 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:30:09,924 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 15:30:09,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:09 BoogieIcfgContainer [2018-11-23 15:30:09,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:30:09,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:30:09,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:30:09,928 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:30:09,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:30:09" (1/3) ... [2018-11-23 15:30:09,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f12e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:30:09, skipping insertion in model container [2018-11-23 15:30:09,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:30:09" (2/3) ... [2018-11-23 15:30:09,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f12e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:30:09, skipping insertion in model container [2018-11-23 15:30:09,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:09" (3/3) ... [2018-11-23 15:30:09,931 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-23 15:30:09,937 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:30:09,942 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 15:30:09,951 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 15:30:09,969 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:30:09,969 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:30:09,970 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:30:09,970 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:30:09,970 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:30:09,970 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:30:09,970 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:30:09,970 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:30:09,970 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:30:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-11-23 15:30:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-23 15:30:09,991 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:09,991 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] [2018-11-23 15:30:09,993 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:09,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:09,997 INFO L82 PathProgramCache]: Analyzing trace with hash -848954410, now seen corresponding path program 1 times [2018-11-23 15:30:09,998 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:09,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:10,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-23 15:30:10,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:30:10,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 15:30:10,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 15:30:10,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 15:30:10,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 15:30:10,153 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2018-11-23 15:30:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:10,193 INFO L93 Difference]: Finished difference Result 118 states and 174 transitions. [2018-11-23 15:30:10,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 15:30:10,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-23 15:30:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:10,201 INFO L225 Difference]: With dead ends: 118 [2018-11-23 15:30:10,201 INFO L226 Difference]: Without dead ends: 52 [2018-11-23 15:30:10,204 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 [2018-11-23 15:30:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-23 15:30:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-23 15:30:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-23 15:30:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2018-11-23 15:30:10,232 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 48 [2018-11-23 15:30:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:10,234 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2018-11-23 15:30:10,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 15:30:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2018-11-23 15:30:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-23 15:30:10,236 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:10,236 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] [2018-11-23 15:30:10,236 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:10,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:10,237 INFO L82 PathProgramCache]: Analyzing trace with hash -796554308, now seen corresponding path program 1 times [2018-11-23 15:30:10,237 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:10,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:10,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-23 15:30:10,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:30:10,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:30:10,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:30:10,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:30:10,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:30:10,302 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand 4 states. [2018-11-23 15:30:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:10,333 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2018-11-23 15:30:10,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:30:10,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-23 15:30:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:10,334 INFO L225 Difference]: With dead ends: 64 [2018-11-23 15:30:10,335 INFO L226 Difference]: Without dead ends: 52 [2018-11-23 15:30:10,335 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 [2018-11-23 15:30:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-23 15:30:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-11-23 15:30:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-23 15:30:10,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2018-11-23 15:30:10,341 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 50 [2018-11-23 15:30:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:10,342 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2018-11-23 15:30:10,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:30:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2018-11-23 15:30:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-23 15:30:10,343 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:10,343 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] [2018-11-23 15:30:10,343 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:10,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:10,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1817622662, now seen corresponding path program 1 times [2018-11-23 15:30:10,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:10,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:10,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:10,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:10,411 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:10,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:10,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:10,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2018-11-23 15:30:10,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 15:30:10,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 15:30:10,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:30:10,541 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand 9 states. [2018-11-23 15:30:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:10,708 INFO L93 Difference]: Finished difference Result 147 states and 207 transitions. [2018-11-23 15:30:10,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 15:30:10,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2018-11-23 15:30:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:10,711 INFO L225 Difference]: With dead ends: 147 [2018-11-23 15:30:10,711 INFO L226 Difference]: Without dead ends: 103 [2018-11-23 15:30:10,712 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-23 15:30:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-23 15:30:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 82. [2018-11-23 15:30:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-23 15:30:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2018-11-23 15:30:10,721 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 112 transitions. Word has length 50 [2018-11-23 15:30:10,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:10,721 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 112 transitions. [2018-11-23 15:30:10,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 15:30:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 112 transitions. [2018-11-23 15:30:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-23 15:30:10,723 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:10,723 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] [2018-11-23 15:30:10,723 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:10,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:10,723 INFO L82 PathProgramCache]: Analyzing trace with hash -30301019, now seen corresponding path program 1 times [2018-11-23 15:30:10,723 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:10,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:10,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:10,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:10,756 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:10,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:30:10,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:30:10,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-11-23 15:30:10,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:30:10,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:30:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:30:10,816 INFO L87 Difference]: Start difference. First operand 82 states and 112 transitions. Second operand 4 states. [2018-11-23 15:30:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:10,862 INFO L93 Difference]: Finished difference Result 161 states and 225 transitions. [2018-11-23 15:30:10,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:30:10,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-23 15:30:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:10,863 INFO L225 Difference]: With dead ends: 161 [2018-11-23 15:30:10,863 INFO L226 Difference]: Without dead ends: 97 [2018-11-23 15:30:10,864 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 [2018-11-23 15:30:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-23 15:30:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-11-23 15:30:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-23 15:30:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2018-11-23 15:30:10,877 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 55 [2018-11-23 15:30:10,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:10,877 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2018-11-23 15:30:10,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:30:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2018-11-23 15:30:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-23 15:30:10,879 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:10,879 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] [2018-11-23 15:30:10,879 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:10,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:10,880 INFO L82 PathProgramCache]: Analyzing trace with hash 410874573, now seen corresponding path program 1 times [2018-11-23 15:30:10,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:10,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:10,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:10,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:10,918 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:10,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:10,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:30:10,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:30:10,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2018-11-23 15:30:10,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:30:10,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:30:10,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:30:10,974 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 4 states. [2018-11-23 15:30:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:11,041 INFO L93 Difference]: Finished difference Result 175 states and 249 transitions. [2018-11-23 15:30:11,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:30:11,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-11-23 15:30:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:11,042 INFO L225 Difference]: With dead ends: 175 [2018-11-23 15:30:11,043 INFO L226 Difference]: Without dead ends: 106 [2018-11-23 15:30:11,043 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 [2018-11-23 15:30:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-23 15:30:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2018-11-23 15:30:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-23 15:30:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2018-11-23 15:30:11,052 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 56 [2018-11-23 15:30:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:11,053 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2018-11-23 15:30:11,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:30:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2018-11-23 15:30:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-23 15:30:11,054 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:11,054 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] [2018-11-23 15:30:11,054 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:11,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash -227603191, now seen corresponding path program 1 times [2018-11-23 15:30:11,055 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:11,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:11,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:11,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:11,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:11,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:11,127 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:11,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:11,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-23 15:30:11,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:30:11,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-23 15:30:11,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 15:30:11,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 15:30:11,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:30:11,193 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand 9 states. [2018-11-23 15:30:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:11,357 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2018-11-23 15:30:11,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 15:30:11,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2018-11-23 15:30:11,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:11,359 INFO L225 Difference]: With dead ends: 185 [2018-11-23 15:30:11,359 INFO L226 Difference]: Without dead ends: 99 [2018-11-23 15:30:11,359 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 [2018-11-23 15:30:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-23 15:30:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2018-11-23 15:30:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-23 15:30:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2018-11-23 15:30:11,371 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 56 [2018-11-23 15:30:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:11,371 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2018-11-23 15:30:11,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 15:30:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2018-11-23 15:30:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-23 15:30:11,372 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:11,372 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] [2018-11-23 15:30:11,373 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:11,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:11,373 INFO L82 PathProgramCache]: Analyzing trace with hash 743896390, now seen corresponding path program 1 times [2018-11-23 15:30:11,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:11,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:11,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:11,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:11,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:11,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:11,432 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:11,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:11,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-23 15:30:11,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:11,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 12 [2018-11-23 15:30:11,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 15:30:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 15:30:11,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-23 15:30:11,556 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand 12 states. [2018-11-23 15:30:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:14,235 INFO L93 Difference]: Finished difference Result 187 states and 254 transitions. [2018-11-23 15:30:14,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 15:30:14,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2018-11-23 15:30:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:14,237 INFO L225 Difference]: With dead ends: 187 [2018-11-23 15:30:14,237 INFO L226 Difference]: Without dead ends: 110 [2018-11-23 15:30:14,237 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 [2018-11-23 15:30:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-23 15:30:14,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 85. [2018-11-23 15:30:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-23 15:30:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 114 transitions. [2018-11-23 15:30:14,249 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 114 transitions. Word has length 57 [2018-11-23 15:30:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:14,250 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 114 transitions. [2018-11-23 15:30:14,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 15:30:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 114 transitions. [2018-11-23 15:30:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-23 15:30:14,251 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:14,251 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] [2018-11-23 15:30:14,251 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:14,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2063636268, now seen corresponding path program 1 times [2018-11-23 15:30:14,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:14,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:14,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:14,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:14,299 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:14,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:14,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:30:14,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:14,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-23 15:30:14,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 15:30:14,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 15:30:14,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 15:30:14,363 INFO L87 Difference]: Start difference. First operand 85 states and 114 transitions. Second operand 5 states. [2018-11-23 15:30:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:14,426 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2018-11-23 15:30:14,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 15:30:14,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2018-11-23 15:30:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:14,428 INFO L225 Difference]: With dead ends: 169 [2018-11-23 15:30:14,428 INFO L226 Difference]: Without dead ends: 94 [2018-11-23 15:30:14,428 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 [2018-11-23 15:30:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-23 15:30:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2018-11-23 15:30:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-23 15:30:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2018-11-23 15:30:14,437 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 58 [2018-11-23 15:30:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:14,437 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2018-11-23 15:30:14,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 15:30:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2018-11-23 15:30:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-23 15:30:14,438 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:14,438 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] [2018-11-23 15:30:14,438 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:14,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:14,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2121428149, now seen corresponding path program 1 times [2018-11-23 15:30:14,439 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:14,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:14,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:14,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:14,500 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:14,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:14,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 15:30:14,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:14,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2018-11-23 15:30:14,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 15:30:14,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 15:30:14,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-11-23 15:30:14,618 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand 11 states. [2018-11-23 15:30:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:14,813 INFO L93 Difference]: Finished difference Result 198 states and 267 transitions. [2018-11-23 15:30:14,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 15:30:14,814 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2018-11-23 15:30:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:14,815 INFO L225 Difference]: With dead ends: 198 [2018-11-23 15:30:14,815 INFO L226 Difference]: Without dead ends: 111 [2018-11-23 15:30:14,815 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 [2018-11-23 15:30:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-23 15:30:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2018-11-23 15:30:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-23 15:30:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2018-11-23 15:30:14,826 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 60 [2018-11-23 15:30:14,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:14,826 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2018-11-23 15:30:14,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 15:30:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2018-11-23 15:30:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-23 15:30:14,827 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:14,827 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] [2018-11-23 15:30:14,827 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:14,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:14,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1179266224, now seen corresponding path program 1 times [2018-11-23 15:30:14,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:14,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:14,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:14,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:14,864 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:14,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:14,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:30:14,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:14,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 15:30:14,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 15:30:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 15:30:14,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-23 15:30:14,918 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand 6 states. [2018-11-23 15:30:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:14,978 INFO L93 Difference]: Finished difference Result 182 states and 239 transitions. [2018-11-23 15:30:14,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 15:30:14,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2018-11-23 15:30:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:14,980 INFO L225 Difference]: With dead ends: 182 [2018-11-23 15:30:14,980 INFO L226 Difference]: Without dead ends: 104 [2018-11-23 15:30:14,980 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 [2018-11-23 15:30:14,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-23 15:30:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2018-11-23 15:30:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-23 15:30:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2018-11-23 15:30:14,989 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 62 [2018-11-23 15:30:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:14,989 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2018-11-23 15:30:14,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 15:30:14,989 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2018-11-23 15:30:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-23 15:30:14,990 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:14,990 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] [2018-11-23 15:30:14,990 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:14,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:14,990 INFO L82 PathProgramCache]: Analyzing trace with hash -430731599, now seen corresponding path program 1 times [2018-11-23 15:30:14,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:14,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:14,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:14,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:15,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:15,073 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:15,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:15,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 15:30:15,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:15,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2018-11-23 15:30:15,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 15:30:15,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 15:30:15,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-11-23 15:30:15,191 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand 14 states. [2018-11-23 15:30:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:15,731 INFO L93 Difference]: Finished difference Result 198 states and 263 transitions. [2018-11-23 15:30:15,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-23 15:30:15,732 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2018-11-23 15:30:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:15,733 INFO L225 Difference]: With dead ends: 198 [2018-11-23 15:30:15,733 INFO L226 Difference]: Without dead ends: 113 [2018-11-23 15:30:15,734 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 [2018-11-23 15:30:15,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-23 15:30:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 76. [2018-11-23 15:30:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-23 15:30:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2018-11-23 15:30:15,748 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 64 [2018-11-23 15:30:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:15,748 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2018-11-23 15:30:15,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 15:30:15,748 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2018-11-23 15:30:15,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-23 15:30:15,749 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:15,749 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] [2018-11-23 15:30:15,750 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:15,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:15,750 INFO L82 PathProgramCache]: Analyzing trace with hash -589993096, now seen corresponding path program 1 times [2018-11-23 15:30:15,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:15,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:15,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:15,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:15,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:15,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:15,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:15,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:15,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:30:15,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:15,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 15:30:15,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 15:30:15,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 15:30:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 15:30:15,862 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 7 states. [2018-11-23 15:30:15,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:15,944 INFO L93 Difference]: Finished difference Result 165 states and 209 transitions. [2018-11-23 15:30:15,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 15:30:15,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2018-11-23 15:30:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:15,946 INFO L225 Difference]: With dead ends: 165 [2018-11-23 15:30:15,946 INFO L226 Difference]: Without dead ends: 99 [2018-11-23 15:30:15,947 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-23 15:30:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-23 15:30:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2018-11-23 15:30:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-23 15:30:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2018-11-23 15:30:15,958 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 69 [2018-11-23 15:30:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:15,958 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2018-11-23 15:30:15,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 15:30:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2018-11-23 15:30:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-23 15:30:15,959 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:15,959 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] [2018-11-23 15:30:15,959 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:15,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:15,960 INFO L82 PathProgramCache]: Analyzing trace with hash 943129273, now seen corresponding path program 1 times [2018-11-23 15:30:15,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:15,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:15,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:15,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:15,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:16,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:16,043 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:16,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:16,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-11-23 15:30:16,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:16,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 16 [2018-11-23 15:30:16,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 15:30:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 15:30:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2018-11-23 15:30:16,199 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 16 states. [2018-11-23 15:30:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:16,842 INFO L93 Difference]: Finished difference Result 201 states and 262 transitions. [2018-11-23 15:30:16,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-23 15:30:16,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2018-11-23 15:30:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:16,843 INFO L225 Difference]: With dead ends: 201 [2018-11-23 15:30:16,843 INFO L226 Difference]: Without dead ends: 133 [2018-11-23 15:30:16,843 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 15:30:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-23 15:30:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2018-11-23 15:30:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-23 15:30:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 126 transitions. [2018-11-23 15:30:16,854 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 126 transitions. Word has length 71 [2018-11-23 15:30:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:16,854 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 126 transitions. [2018-11-23 15:30:16,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 15:30:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 126 transitions. [2018-11-23 15:30:16,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-23 15:30:16,855 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:16,855 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] [2018-11-23 15:30:16,855 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:16,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:16,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1201821761, now seen corresponding path program 1 times [2018-11-23 15:30:16,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:16,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:16,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:16,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:16,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:16,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:16,902 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:16,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:16,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 15:30:16,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:16,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-23 15:30:16,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 15:30:16,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 15:30:16,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-23 15:30:16,963 INFO L87 Difference]: Start difference. First operand 96 states and 126 transitions. Second operand 8 states. [2018-11-23 15:30:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:17,039 INFO L93 Difference]: Finished difference Result 212 states and 279 transitions. [2018-11-23 15:30:17,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 15:30:17,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2018-11-23 15:30:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:17,041 INFO L225 Difference]: With dead ends: 212 [2018-11-23 15:30:17,041 INFO L226 Difference]: Without dead ends: 126 [2018-11-23 15:30:17,042 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 [2018-11-23 15:30:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-11-23 15:30:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 98. [2018-11-23 15:30:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-11-23 15:30:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2018-11-23 15:30:17,050 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 72 [2018-11-23 15:30:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:17,051 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2018-11-23 15:30:17,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 15:30:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2018-11-23 15:30:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-23 15:30:17,052 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:17,052 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] [2018-11-23 15:30:17,052 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:17,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:17,052 INFO L82 PathProgramCache]: Analyzing trace with hash 903805378, now seen corresponding path program 1 times [2018-11-23 15:30:17,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:17,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:17,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:17,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:17,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-23 15:30:17,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:17,130 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:17,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:17,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 15:30:17,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:17,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2018-11-23 15:30:17,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 15:30:17,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 15:30:17,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-11-23 15:30:17,299 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand 17 states. [2018-11-23 15:30:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:20,284 INFO L93 Difference]: Finished difference Result 222 states and 293 transitions. [2018-11-23 15:30:20,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-23 15:30:20,284 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2018-11-23 15:30:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:20,285 INFO L225 Difference]: With dead ends: 222 [2018-11-23 15:30:20,285 INFO L226 Difference]: Without dead ends: 112 [2018-11-23 15:30:20,286 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 [2018-11-23 15:30:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-23 15:30:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 79. [2018-11-23 15:30:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-23 15:30:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2018-11-23 15:30:20,293 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 74 [2018-11-23 15:30:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:20,293 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2018-11-23 15:30:20,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 15:30:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2018-11-23 15:30:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 15:30:20,294 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:20,294 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] [2018-11-23 15:30:20,295 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:20,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash 613414087, now seen corresponding path program 2 times [2018-11-23 15:30:20,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:20,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:20,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:20,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:20,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-23 15:30:20,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:20,351 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:20,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 15:30:20,476 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 15:30:20,476 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:30:20,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 15:30:20,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:20,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-23 15:30:20,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 15:30:20,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 15:30:20,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:30:20,512 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 9 states. [2018-11-23 15:30:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:20,581 INFO L93 Difference]: Finished difference Result 173 states and 212 transitions. [2018-11-23 15:30:20,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 15:30:20,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2018-11-23 15:30:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:20,583 INFO L225 Difference]: With dead ends: 173 [2018-11-23 15:30:20,583 INFO L226 Difference]: Without dead ends: 101 [2018-11-23 15:30:20,583 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 [2018-11-23 15:30:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-23 15:30:20,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2018-11-23 15:30:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-23 15:30:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2018-11-23 15:30:20,590 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 79 [2018-11-23 15:30:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:20,590 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2018-11-23 15:30:20,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 15:30:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2018-11-23 15:30:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-23 15:30:20,591 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:20,591 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] [2018-11-23 15:30:20,591 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:20,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:20,591 INFO L82 PathProgramCache]: Analyzing trace with hash -847324280, now seen corresponding path program 2 times [2018-11-23 15:30:20,591 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:20,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:20,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:20,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:30:20,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-23 15:30:20,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:20,676 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:20,688 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 15:30:20,718 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 15:30:20,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:30:20,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-23 15:30:20,865 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:20,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2018-11-23 15:30:20,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 15:30:20,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 15:30:20,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-11-23 15:30:20,867 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand 18 states. [2018-11-23 15:30:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:21,357 INFO L93 Difference]: Finished difference Result 182 states and 228 transitions. [2018-11-23 15:30:21,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-23 15:30:21,358 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 81 [2018-11-23 15:30:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:21,359 INFO L225 Difference]: With dead ends: 182 [2018-11-23 15:30:21,359 INFO L226 Difference]: Without dead ends: 106 [2018-11-23 15:30:21,361 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 [2018-11-23 15:30:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-23 15:30:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 85. [2018-11-23 15:30:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-23 15:30:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2018-11-23 15:30:21,374 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 81 [2018-11-23 15:30:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:21,375 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2018-11-23 15:30:21,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 15:30:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2018-11-23 15:30:21,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-23 15:30:21,375 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:21,376 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] [2018-11-23 15:30:21,376 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:21,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:21,376 INFO L82 PathProgramCache]: Analyzing trace with hash 354457994, now seen corresponding path program 1 times [2018-11-23 15:30:21,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:21,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:21,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:21,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:30:21,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 67 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 15:30:21,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:21,451 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:21,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:21,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 26 proven. 57 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 15:30:21,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:21,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-23 15:30:21,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 15:30:21,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 15:30:21,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-23 15:30:21,513 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 10 states. [2018-11-23 15:30:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:21,579 INFO L93 Difference]: Finished difference Result 189 states and 231 transitions. [2018-11-23 15:30:21,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 15:30:21,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2018-11-23 15:30:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:21,580 INFO L225 Difference]: With dead ends: 189 [2018-11-23 15:30:21,580 INFO L226 Difference]: Without dead ends: 111 [2018-11-23 15:30:21,580 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 [2018-11-23 15:30:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-23 15:30:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2018-11-23 15:30:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-23 15:30:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2018-11-23 15:30:21,589 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 82 [2018-11-23 15:30:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:21,589 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2018-11-23 15:30:21,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 15:30:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2018-11-23 15:30:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-23 15:30:21,589 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:21,589 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] [2018-11-23 15:30:21,590 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:21,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:21,590 INFO L82 PathProgramCache]: Analyzing trace with hash -481117557, now seen corresponding path program 1 times [2018-11-23 15:30:21,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:21,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:21,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:21,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 15:30:21,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:21,721 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:21,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:21,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-23 15:30:21,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:21,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-23 15:30:21,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 15:30:21,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 15:30:21,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2018-11-23 15:30:21,946 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand 19 states. [2018-11-23 15:30:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:22,405 INFO L93 Difference]: Finished difference Result 197 states and 242 transitions. [2018-11-23 15:30:22,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-23 15:30:22,405 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2018-11-23 15:30:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:22,406 INFO L225 Difference]: With dead ends: 197 [2018-11-23 15:30:22,406 INFO L226 Difference]: Without dead ends: 110 [2018-11-23 15:30:22,407 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 [2018-11-23 15:30:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-23 15:30:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2018-11-23 15:30:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-11-23 15:30:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2018-11-23 15:30:22,414 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 84 [2018-11-23 15:30:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:22,415 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2018-11-23 15:30:22,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 15:30:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2018-11-23 15:30:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-23 15:30:22,415 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:22,415 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] [2018-11-23 15:30:22,416 INFO L423 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:22,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash 887832869, now seen corresponding path program 1 times [2018-11-23 15:30:22,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:22,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:22,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:22,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 87 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 15:30:22,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:22,479 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:22,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:22,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 26 proven. 77 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 15:30:22,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:22,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-23 15:30:22,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 15:30:22,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 15:30:22,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-11-23 15:30:22,538 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand 11 states. [2018-11-23 15:30:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:22,590 INFO L93 Difference]: Finished difference Result 199 states and 242 transitions. [2018-11-23 15:30:22,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 15:30:22,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2018-11-23 15:30:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:22,592 INFO L225 Difference]: With dead ends: 199 [2018-11-23 15:30:22,592 INFO L226 Difference]: Without dead ends: 118 [2018-11-23 15:30:22,592 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 [2018-11-23 15:30:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-11-23 15:30:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 90. [2018-11-23 15:30:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-23 15:30:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2018-11-23 15:30:22,602 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 85 [2018-11-23 15:30:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:22,602 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2018-11-23 15:30:22,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 15:30:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2018-11-23 15:30:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-23 15:30:22,603 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:30:22,603 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] [2018-11-23 15:30:22,603 INFO L423 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:30:22,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:30:22,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1299513318, now seen corresponding path program 1 times [2018-11-23 15:30:22,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:30:22,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:30:22,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:22,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:22,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:30:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 4 proven. 95 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 15:30:22,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:30:22,739 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/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 [2018-11-23 15:30:22,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:30:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:30:22,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:30:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-23 15:30:22,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:30:22,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-11-23 15:30:22,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-23 15:30:22,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-23 15:30:22,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-11-23 15:30:22,920 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 20 states. [2018-11-23 15:30:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:30:23,498 INFO L93 Difference]: Finished difference Result 184 states and 226 transitions. [2018-11-23 15:30:23,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-23 15:30:23,498 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 87 [2018-11-23 15:30:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:30:23,498 INFO L225 Difference]: With dead ends: 184 [2018-11-23 15:30:23,498 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:30:23,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2018-11-23 15:30:23,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:30:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:30:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:30:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:30:23,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2018-11-23 15:30:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:30:23,499 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:30:23,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-23 15:30:23,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:30:23,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:30:23,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 15:30:23,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,701 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 56 [2018-11-23 15:30:23,795 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,805 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:23,856 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 99 [2018-11-23 15:30:24,079 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 66 [2018-11-23 15:30:24,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,135 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,288 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 76 [2018-11-23 15:30:24,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,328 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,424 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:24,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 15:30:27,103 WARN L180 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-23 15:30:27,402 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 22 [2018-11-23 15:30:27,413 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point mulfltEXIT(lines 137 209) no Hoare annotation was computed. [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point L184(lines 184 201) no Hoare annotation was computed. [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point L184-2(lines 184 201) no Hoare annotation was computed. [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point L193(lines 193 198) no Hoare annotation was computed. [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point mulfltFINAL(lines 137 209) no Hoare annotation was computed. [2018-11-23 15:30:27,413 INFO L451 ceAbstractionStarter]: At program point mulfltENTRY(lines 137 209) the Hoare annotation is: true [2018-11-23 15:30:27,413 INFO L448 ceAbstractionStarter]: For program point L185(lines 185 190) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L148(lines 148 154) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L148-2(lines 147 208) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L175(lines 175 180) no Hoare annotation was computed. [2018-11-23 15:30:27,414 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))))) [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L169(lines 169 174) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 24) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L48(lines 47 62) no Hoare annotation was computed. [2018-11-23 15:30:27,414 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)))))) [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L28(lines 27 42) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L49(lines 47 62) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-11-23 15:30:27,414 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|)) [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 65) no Hoare annotation was computed. [2018-11-23 15:30:27,414 INFO L451 ceAbstractionStarter]: At program point base2fltENTRY(lines 14 72) the Hoare annotation is: true [2018-11-23 15:30:27,414 INFO L448 ceAbstractionStarter]: For program point base2fltFINAL(lines 14 72) no Hoare annotation was computed. [2018-11-23 15:30:27,415 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))))) [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point base2fltEXIT(lines 14 72) no Hoare annotation was computed. [2018-11-23 15:30:27,415 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))))) [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 15:30:27,415 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L250(lines 250 254) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 210 266) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L250-2(lines 250 254) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L246(lines 246 262) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L246-1(lines 246 262) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L244(line 244) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 210 266) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L236(lines 236 240) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L236-2(lines 236 240) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L444 ceAbstractionStarter]: At program point L230(line 230) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L230-1(line 230) no Hoare annotation was computed. [2018-11-23 15:30:27,415 INFO L451 ceAbstractionStarter]: At program point L228(line 228) the Hoare annotation is: true [2018-11-23 15:30:27,415 INFO L448 ceAbstractionStarter]: For program point L228-1(line 228) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 210 266) the Hoare annotation is: true [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L247(lines 247 256) no Hoare annotation was computed. [2018-11-23 15:30:27,416 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)) [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L233(lines 233 242) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L444 ceAbstractionStarter]: At program point L231(line 231) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-23 15:30:27,416 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))) [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L231-1(line 231) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L444 ceAbstractionStarter]: At program point L229(line 229) the Hoare annotation is: (= 0 main_~zero~0) [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L229-1(line 229) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2018-11-23 15:30:27,416 INFO L448 ceAbstractionStarter]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2018-11-23 15:30:27,420 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,420 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,420 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,425 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,425 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,425 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,426 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,426 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,426 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,427 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,427 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,427 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,428 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-23 15:30:27,428 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,429 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,429 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-23 15:30:27,429 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,429 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,430 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,431 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,431 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,431 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,431 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,431 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:30:27 BoogieIcfgContainer [2018-11-23 15:30:27,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:30:27,433 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:30:27,433 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:30:27,433 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:30:27,434 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:30:09" (3/4) ... [2018-11-23 15:30:27,437 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:30:27,442 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 15:30:27,443 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mulflt [2018-11-23 15:30:27,443 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2018-11-23 15:30:27,443 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 15:30:27,443 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-23 15:30:27,447 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-23 15:30:27,447 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-23 15:30:27,447 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 15:30:27,465 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) [2018-11-23 15:30:27,465 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) [2018-11-23 15:30:27,465 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) [2018-11-23 15:30:27,465 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) [2018-11-23 15:30:27,466 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)) [2018-11-23 15:30:27,486 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6abfaae1-2e94-42cf-a5f4-8ebfaa7491cf/bin-2019/uautomizer/witness.graphml [2018-11-23 15:30:27,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:30:27,487 INFO L168 Benchmark]: Toolchain (without parser) took 18086.23 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 419.4 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -257.3 MB). Peak memory consumption was 162.1 MB. Max. memory is 11.5 GB. [2018-11-23 15:30:27,488 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:30:27,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.32 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 943.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-23 15:30:27,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -210.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:30:27,489 INFO L168 Benchmark]: Boogie Preprocessor took 21.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:30:27,489 INFO L168 Benchmark]: RCFGBuilder took 232.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:30:27,489 INFO L168 Benchmark]: TraceAbstraction took 17507.34 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 261.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -88.2 MB). Peak memory consumption was 486.0 MB. Max. memory is 11.5 GB. [2018-11-23 15:30:27,489 INFO L168 Benchmark]: Witness Printer took 53.60 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 678.4 kB). Peak memory consumption was 678.4 kB. Max. memory is 11.5 GB. [2018-11-23 15:30:27,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 219.32 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 943.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -210.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 232.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17507.34 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 261.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -88.2 MB). Peak memory consumption was 486.0 MB. Max. memory is 11.5 GB. * Witness Printer took 53.60 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 678.4 kB). Peak memory consumption was 678.4 kB. 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 [2018-11-23 15:30:27,494 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,494 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,495 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,495 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,495 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,495 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 [2018-11-23 15:30:27,496 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,496 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,496 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,496 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,496 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,496 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 [2018-11-23 15:30:27,497 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-23 15:30:27,497 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,497 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,498 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_mulflt_~a_6,QUANTIFIED] [2018-11-23 15:30:27,498 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[mulflt_~b,QUANTIFIED] [2018-11-23 15:30:27,498 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 [2018-11-23 15:30:27,499 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,499 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,499 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,499 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,499 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[base2flt_~m,QUANTIFIED] [2018-11-23 15:30:27,499 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, 17.4s OverallTime, 21 OverallIterations, 8 TraceHistogramMax, 9.6s AutomataDifference, 0.0s DeadEndRemovalTime, 3.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 1305 SDtfs, 1053 SDslu, 8656 SDs, 0 SdLazy, 5346 SolverSat, 146 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.7s 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, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s 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...