./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 0b1dd98d7879c6a852477263dd33a13d229a6eb3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:08:21,044 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:08:21,045 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:08:21,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:08:21,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:08:21,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:08:21,054 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:08:21,056 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:08:21,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:08:21,057 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:08:21,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:08:21,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:08:21,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:08:21,059 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:08:21,060 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:08:21,061 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:08:21,061 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:08:21,063 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:08:21,064 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:08:21,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:08:21,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:08:21,067 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:08:21,068 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:08:21,068 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:08:21,069 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:08:21,069 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:08:21,070 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:08:21,070 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:08:21,071 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:08:21,072 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:08:21,072 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:08:21,072 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:08:21,073 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:08:21,073 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:08:21,073 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:08:21,074 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:08:21,074 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 12:08:21,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:08:21,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:08:21,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:08:21,085 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:08:21,085 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:08:21,085 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:08:21,086 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:08:21,086 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:08:21,086 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:08:21,086 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:08:21,086 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:08:21,086 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:08:21,087 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:08:21,088 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:08:21,088 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:08:21,088 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:08:21,088 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:08:21,088 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:08:21,088 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:08:21,089 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:08:21,089 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:08:21,089 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:08:21,089 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:08:21,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:08:21,089 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_3b480864-85e8-486a-802a-334fc892595f/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-11-18 12:08:21,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:08:21,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:08:21,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:08:21,121 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:08:21,121 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:08:21,122 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 12:08:21,160 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/412b57ac4/12c0a248aaf047bb8c7439b95c664737/FLAG8e4acd771 [2018-11-18 12:08:21,451 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:08:21,451 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 12:08:21,455 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/412b57ac4/12c0a248aaf047bb8c7439b95c664737/FLAG8e4acd771 [2018-11-18 12:08:21,463 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/412b57ac4/12c0a248aaf047bb8c7439b95c664737 [2018-11-18 12:08:21,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:08:21,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:08:21,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:08:21,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:08:21,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:08:21,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a19fc73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21, skipping insertion in model container [2018-11-18 12:08:21,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:08:21,491 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:08:21,594 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:08:21,596 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:08:21,606 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:08:21,614 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:08:21,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21 WrapperNode [2018-11-18 12:08:21,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:08:21,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:08:21,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:08:21,615 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:08:21,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... [2018-11-18 12:08:21,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:08:21,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:08:21,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:08:21,633 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:08:21,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:21,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:08:21,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:08:21,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:08:21,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:08:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:08:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2018-11-18 12:08:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:08:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:08:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:08:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:08:21,830 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:08:21,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:08:21 BoogieIcfgContainer [2018-11-18 12:08:21,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:08:21,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:08:21,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:08:21,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:08:21,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:08:21" (1/3) ... [2018-11-18 12:08:21,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546e9b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:08:21, skipping insertion in model container [2018-11-18 12:08:21,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:21" (2/3) ... [2018-11-18 12:08:21,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546e9b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:08:21, skipping insertion in model container [2018-11-18 12:08:21,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:08:21" (3/3) ... [2018-11-18 12:08:21,839 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 12:08:21,847 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:08:21,854 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:08:21,867 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:08:21,892 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:08:21,893 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:08:21,893 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:08:21,893 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:08:21,893 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:08:21,893 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:08:21,893 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:08:21,893 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:08:21,894 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:08:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 12:08:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:08:21,913 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:21,914 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:21,916 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:21,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:21,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-18 12:08:21,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:21,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:21,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:21,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:21,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:21,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:08:21,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:08:21,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:08:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:08:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:08:22,009 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-18 12:08:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:22,026 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 12:08:22,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:08:22,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 12:08:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:22,033 INFO L225 Difference]: With dead ends: 33 [2018-11-18 12:08:22,033 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 12:08:22,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:08:22,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 12:08:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 12:08:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 12:08:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-18 12:08:22,065 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-18 12:08:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:22,065 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-18 12:08:22,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:08:22,065 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-18 12:08:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 12:08:22,065 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:22,066 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:22,066 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:22,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:22,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-18 12:08:22,066 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:22,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:22,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:22,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:08:22,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:08:22,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:08:22,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:08:22,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:08:22,133 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-11-18 12:08:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:22,152 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-18 12:08:22,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:08:22,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 12:08:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:22,153 INFO L225 Difference]: With dead ends: 23 [2018-11-18 12:08:22,153 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:08:22,154 INFO L604 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 [2018-11-18 12:08:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:08:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 12:08:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 12:08:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 12:08:22,156 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-18 12:08:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:22,156 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 12:08:22,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:08:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 12:08:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 12:08:22,157 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:22,157 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:22,157 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:22,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:22,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1858249546, now seen corresponding path program 1 times [2018-11-18 12:08:22,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:22,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:22,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:22,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:22,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:22,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:22,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:22,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-18 12:08:22,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:08:22,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:08:22,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:08:22,297 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2018-11-18 12:08:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:22,331 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-18 12:08:22,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:08:22,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-18 12:08:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:22,332 INFO L225 Difference]: With dead ends: 27 [2018-11-18 12:08:22,332 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 12:08:22,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:08:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 12:08:22,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-18 12:08:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 12:08:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-11-18 12:08:22,336 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2018-11-18 12:08:22,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:22,336 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-11-18 12:08:22,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:08:22,336 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-11-18 12:08:22,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 12:08:22,336 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:22,337 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:22,337 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:22,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:22,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1003959284, now seen corresponding path program 2 times [2018-11-18 12:08:22,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:22,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:22,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:22,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:22,403 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:22,409 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:08:22,429 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:08:22,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:22,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:22,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-18 12:08:22,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:08:22,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:08:22,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:08:22,494 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2018-11-18 12:08:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:22,525 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-18 12:08:22,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:08:22,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-18 12:08:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:22,526 INFO L225 Difference]: With dead ends: 31 [2018-11-18 12:08:22,526 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 12:08:22,526 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:08:22,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 12:08:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-18 12:08:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 12:08:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-18 12:08:22,530 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2018-11-18 12:08:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:22,530 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-18 12:08:22,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:08:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-18 12:08:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 12:08:22,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:22,531 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:22,531 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:22,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:22,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1434410910, now seen corresponding path program 3 times [2018-11-18 12:08:22,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:22,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:22,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:08:22,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:22,601 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:22,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:08:22,631 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 12:08:22,631 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:22,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:22,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-11-18 12:08:22,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:08:22,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:08:22,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:08:22,748 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 9 states. [2018-11-18 12:08:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:22,814 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-18 12:08:22,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:08:22,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-18 12:08:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:22,814 INFO L225 Difference]: With dead ends: 35 [2018-11-18 12:08:22,815 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 12:08:22,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:08:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 12:08:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-11-18 12:08:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 12:08:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-18 12:08:22,819 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2018-11-18 12:08:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:22,819 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-18 12:08:22,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:08:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-18 12:08:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 12:08:22,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:22,820 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:22,820 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:22,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:22,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1032477112, now seen corresponding path program 4 times [2018-11-18 12:08:22,820 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:22,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:22,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:08:22,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:22,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:22,908 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:22,915 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:08:22,925 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:08:22,925 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:22,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:23,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:23,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-11-18 12:08:23,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 12:08:23,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 12:08:23,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:08:23,050 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2018-11-18 12:08:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:23,113 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-18 12:08:23,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 12:08:23,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2018-11-18 12:08:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:23,114 INFO L225 Difference]: With dead ends: 39 [2018-11-18 12:08:23,114 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 12:08:23,114 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:08:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 12:08:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-18 12:08:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 12:08:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-18 12:08:23,119 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2018-11-18 12:08:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:23,119 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-18 12:08:23,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 12:08:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-18 12:08:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 12:08:23,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:23,120 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:23,120 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:23,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:23,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1472952334, now seen corresponding path program 5 times [2018-11-18 12:08:23,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:23,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:23,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:23,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:08:23,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:23,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:23,231 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:23,237 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:08:23,249 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 12:08:23,250 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:23,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:23,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:23,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-18 12:08:23,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 12:08:23,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 12:08:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:08:23,354 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 13 states. [2018-11-18 12:08:23,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:23,414 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-11-18 12:08:23,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:08:23,421 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-18 12:08:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:23,422 INFO L225 Difference]: With dead ends: 43 [2018-11-18 12:08:23,422 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 12:08:23,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:08:23,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 12:08:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-11-18 12:08:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:08:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 12:08:23,428 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 31 [2018-11-18 12:08:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:23,428 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 12:08:23,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 12:08:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 12:08:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 12:08:23,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:23,429 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:23,430 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:23,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -352942948, now seen corresponding path program 6 times [2018-11-18 12:08:23,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:23,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:23,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:23,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:08:23,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:23,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:23,545 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:23,560 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:08:23,583 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 12:08:23,583 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:23,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:23,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:23,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-18 12:08:23,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 12:08:23,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 12:08:23,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:08:23,781 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 15 states. [2018-11-18 12:08:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:23,860 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-11-18 12:08:23,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:08:23,861 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2018-11-18 12:08:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:23,861 INFO L225 Difference]: With dead ends: 47 [2018-11-18 12:08:23,862 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 12:08:23,862 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:08:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 12:08:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-18 12:08:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-18 12:08:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-18 12:08:23,866 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2018-11-18 12:08:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:23,867 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-18 12:08:23,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 12:08:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-18 12:08:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 12:08:23,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:23,868 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:23,869 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:23,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:23,870 INFO L82 PathProgramCache]: Analyzing trace with hash -843703226, now seen corresponding path program 7 times [2018-11-18 12:08:23,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:23,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:23,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:23,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:08:23,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:23,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:08:23,958 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:23,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:23,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:24,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:24,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-18 12:08:24,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 12:08:24,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 12:08:24,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-18 12:08:24,155 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 17 states. [2018-11-18 12:08:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:24,283 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-18 12:08:24,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 12:08:24,283 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2018-11-18 12:08:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:24,284 INFO L225 Difference]: With dead ends: 51 [2018-11-18 12:08:24,284 INFO L226 Difference]: Without dead ends: 46 [2018-11-18 12:08:24,284 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-11-18 12:08:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-18 12:08:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2018-11-18 12:08:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 12:08:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-11-18 12:08:24,288 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 39 [2018-11-18 12:08:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:24,288 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-11-18 12:08:24,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 12:08:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-11-18 12:08:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 12:08:24,289 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:24,289 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:24,289 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:24,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:24,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1842491664, now seen corresponding path program 8 times [2018-11-18 12:08:24,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:08:24,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:08:24,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:24,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:24,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:08:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:08:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:08:24,324 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:08:24,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:08:24 BoogieIcfgContainer [2018-11-18 12:08:24,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:08:24,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:08:24,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:08:24,349 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:08:24,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:08:21" (3/4) ... [2018-11-18 12:08:24,352 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 12:08:24,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:08:24,353 INFO L168 Benchmark]: Toolchain (without parser) took 2887.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 218.6 MB). Free memory was 958.1 MB in the beginning and 1.2 GB in the end (delta: -209.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:08:24,354 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. [2018-11-18 12:08:24,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.56 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:08:24,355 INFO L168 Benchmark]: Boogie Preprocessor took 18.29 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:08:24,355 INFO L168 Benchmark]: RCFGBuilder took 197.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:08:24,356 INFO L168 Benchmark]: TraceAbstraction took 2516.81 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -37.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:08:24,357 INFO L168 Benchmark]: Witness Printer took 3.91 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. [2018-11-18 12:08:24,359 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 147.56 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.29 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 197.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2516.81 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -37.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.91 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 21, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L14] unsigned char x = __VERIFIER_nondet_uchar(); [L15] unsigned char y; [L16] unsigned char c; [L18] y = 0 [L19] c = 0 VAL [c=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=0, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=0, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=1, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=1, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=1, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=2, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=2, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=2, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=3, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=3, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=3, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=4, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=4, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=4, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=5, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=5, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=5, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=6, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=6, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=6, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=7, i=0, x=1, y=0] [L20] COND TRUE c < (unsigned char)8 [L21] unsigned char i = ((unsigned char)1) << c; [L22] unsigned char bit = x & i; VAL [c=7, x=1, y=0] [L23] COND TRUE bit != (unsigned char)0 [L24] y = y + i VAL [bit=1, c=7, i=0, x=1, y=0] [L26] c = c + ((unsigned char)1) VAL [bit=1, c=8, i=0, x=1, y=0] [L20] COND FALSE !(c < (unsigned char)8) VAL [bit=1, c=8, i=0, x=1, y=0] [L28] CALL __VERIFIER_assert(x == y) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 2.4s OverallTime, 10 OverallIterations, 9 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 210 SDtfs, 134 SDslu, 996 SDs, 0 SdLazy, 575 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 156 SyntacticMatches, 16 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=9, 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: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 383 ConstructedInterpolants, 98 QuantifiedInterpolants, 117589 SizeOfPredicates, 13 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/560 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 12:08:25,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:08:25,905 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:08:25,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:08:25,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:08:25,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:08:25,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:08:25,915 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:08:25,916 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:08:25,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:08:25,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:08:25,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:08:25,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:08:25,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:08:25,920 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:08:25,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:08:25,922 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:08:25,923 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:08:25,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:08:25,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:08:25,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:08:25,927 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:08:25,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:08:25,930 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:08:25,930 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:08:25,930 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:08:25,931 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:08:25,932 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:08:25,932 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:08:25,934 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:08:25,934 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:08:25,934 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:08:25,934 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:08:25,935 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:08:25,935 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:08:25,936 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:08:25,936 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 12:08:25,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:08:25,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:08:25,948 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:08:25,948 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:08:25,948 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:08:25,948 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:08:25,948 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:08:25,949 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:08:25,949 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:08:25,949 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:08:25,950 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:08:25,951 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:08:25,951 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:08:25,951 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:08:25,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:08:25,952 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 12:08:25,952 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:08:25,952 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 12:08:25,952 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 12:08:25,952 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_3b480864-85e8-486a-802a-334fc892595f/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 -> 0b1dd98d7879c6a852477263dd33a13d229a6eb3 [2018-11-18 12:08:25,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:08:25,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:08:25,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:08:25,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:08:25,992 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:08:25,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 12:08:26,028 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/a64ac07fb/9f51ef9c20a24e74835e4a43e182a277/FLAGb06802220 [2018-11-18 12:08:26,420 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:08:26,420 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/sv-benchmarks/c/bitvector/num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 12:08:26,424 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/a64ac07fb/9f51ef9c20a24e74835e4a43e182a277/FLAGb06802220 [2018-11-18 12:08:26,433 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/data/a64ac07fb/9f51ef9c20a24e74835e4a43e182a277 [2018-11-18 12:08:26,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:08:26,437 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:08:26,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:08:26,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:08:26,441 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:08:26,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26, skipping insertion in model container [2018-11-18 12:08:26,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:08:26,463 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:08:26,588 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:08:26,591 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:08:26,603 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:08:26,611 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:08:26,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26 WrapperNode [2018-11-18 12:08:26,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:08:26,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:08:26,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:08:26,612 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:08:26,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... [2018-11-18 12:08:26,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:08:26,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:08:26,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:08:26,637 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:08:26,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/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 [2018-11-18 12:08:26,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:08:26,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:08:26,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:08:26,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:08:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:08:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2018-11-18 12:08:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:08:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:08:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:08:26,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:08:26,834 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:08:26,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:08:26 BoogieIcfgContainer [2018-11-18 12:08:26,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:08:26,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:08:26,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:08:26,837 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:08:26,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:08:26" (1/3) ... [2018-11-18 12:08:26,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2f0e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:08:26, skipping insertion in model container [2018-11-18 12:08:26,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:08:26" (2/3) ... [2018-11-18 12:08:26,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2f0e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:08:26, skipping insertion in model container [2018-11-18 12:08:26,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:08:26" (3/3) ... [2018-11-18 12:08:26,839 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2_true-unreach-call_true-no-overflow.i [2018-11-18 12:08:26,845 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:08:26,849 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:08:26,859 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:08:26,876 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:08:26,877 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:08:26,877 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:08:26,877 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:08:26,877 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:08:26,877 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:08:26,877 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:08:26,877 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:08:26,878 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:08:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 12:08:26,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:08:26,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:26,897 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:26,898 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:26,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-18 12:08:26,904 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:08:26,904 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:08:26,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:26,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:26,956 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:08:26,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:08:26,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:08:26,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:08:26,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:08:26,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:08:26,970 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-18 12:08:26,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:26,984 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-18 12:08:26,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:08:26,985 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 12:08:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:26,990 INFO L225 Difference]: With dead ends: 33 [2018-11-18 12:08:26,990 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 12:08:26,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:08:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 12:08:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 12:08:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 12:08:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-18 12:08:27,019 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-18 12:08:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:27,019 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-18 12:08:27,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:08:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-18 12:08:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 12:08:27,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:27,019 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:27,020 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:27,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-18 12:08:27,020 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:08:27,020 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:08:27,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:27,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:27,067 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 12:08:27,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:08:27,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:08:27,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:08:27,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:08:27,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:08:27,069 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2018-11-18 12:08:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:27,087 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-18 12:08:27,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:08:27,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 12:08:27,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:27,088 INFO L225 Difference]: With dead ends: 23 [2018-11-18 12:08:27,088 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:08:27,089 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:08:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:08:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 12:08:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 12:08:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 12:08:27,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-18 12:08:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:27,093 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 12:08:27,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:08:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 12:08:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 12:08:27,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:27,093 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:27,093 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:27,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:27,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1858249546, now seen corresponding path program 1 times [2018-11-18 12:08:27,094 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:08:27,094 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:08:27,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:08:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:08:27,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:27,134 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:08:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:27,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:27,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 12:08:27,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 12:08:27,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 12:08:27,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:08:27,158 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2018-11-18 12:08:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:27,220 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-11-18 12:08:27,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:08:27,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-18 12:08:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:27,221 INFO L225 Difference]: With dead ends: 33 [2018-11-18 12:08:27,221 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 12:08:27,222 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:08:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 12:08:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 12:08:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 12:08:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-18 12:08:27,227 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2018-11-18 12:08:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:27,227 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-18 12:08:27,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 12:08:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-18 12:08:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 12:08:27,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:27,228 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:27,228 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:27,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:27,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1032477112, now seen corresponding path program 2 times [2018-11-18 12:08:27,229 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:08:27,229 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:08:27,242 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 12:08:27,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:08:27,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:27,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:27,314 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:08:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:27,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:27,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 12:08:27,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 12:08:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 12:08:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:08:27,414 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 12 states. [2018-11-18 12:08:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:08:27,554 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2018-11-18 12:08:27,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 12:08:27,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-11-18 12:08:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:08:27,555 INFO L225 Difference]: With dead ends: 49 [2018-11-18 12:08:27,555 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 12:08:27,557 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-18 12:08:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 12:08:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-18 12:08:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 12:08:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-11-18 12:08:27,564 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 27 [2018-11-18 12:08:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:08:27,564 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-11-18 12:08:27,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 12:08:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-11-18 12:08:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 12:08:27,565 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:08:27,565 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:08:27,565 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:08:27,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:08:27,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1842491664, now seen corresponding path program 3 times [2018-11-18 12:08:27,566 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 12:08:27,566 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3b480864-85e8-486a-802a-334fc892595f/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 12:08:27,592 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 12:08:27,704 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-11-18 12:08:27,704 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:08:27,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:08:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:30,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 12:08:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:08:35,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:08:35,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2018-11-18 12:08:35,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-18 12:08:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-18 12:08:35,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2776, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 12:08:35,976 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 56 states. [2018-11-18 12:08:38,883 WARN L180 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 272 DAG size of output: 255 [2018-11-18 12:08:39,737 WARN L180 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 120 [2018-11-18 12:08:42,354 WARN L180 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2018-11-18 12:08:45,239 WARN L180 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 294 DAG size of output: 277 [2018-11-18 12:08:45,688 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2018-11-18 12:08:46,868 WARN L180 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 136 [2018-11-18 12:08:47,557 WARN L180 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2018-11-18 12:08:48,210 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2018-11-18 12:08:48,774 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 127 [2018-11-18 12:08:51,291 WARN L180 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2018-11-18 12:08:52,484 WARN L180 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2018-11-18 12:08:53,047 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2018-11-18 12:08:53,422 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-11-18 12:08:54,649 WARN L180 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 189 [2018-11-18 12:08:55,835 WARN L180 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 138 [2018-11-18 12:08:59,105 WARN L180 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 273 DAG size of output: 268 [2018-11-18 12:08:59,438 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-11-18 12:09:01,155 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 252 [2018-11-18 12:09:02,711 WARN L180 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2018-11-18 12:09:03,148 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2018-11-18 12:09:04,583 WARN L180 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2018-11-18 12:09:04,944 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-11-18 12:09:05,795 WARN L180 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2018-11-18 12:09:07,019 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 122 [2018-11-18 12:09:08,126 WARN L180 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 123 [2018-11-18 12:09:09,153 WARN L180 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-11-18 12:09:09,665 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2018-11-18 12:09:10,067 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2018-11-18 12:09:12,252 WARN L180 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 149 [2018-11-18 12:09:13,216 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 108 [2018-11-18 12:09:15,142 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 250 [2018-11-18 12:09:16,508 WARN L180 SmtUtils]: Spent 854.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2018-11-18 12:09:17,866 WARN L180 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2018-11-18 12:09:18,826 WARN L180 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2018-11-18 12:09:21,211 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 268 DAG size of output: 246 [2018-11-18 12:09:22,595 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 122 [2018-11-18 12:09:23,710 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 118 [2018-11-18 12:09:26,081 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 279 DAG size of output: 257 [2018-11-18 12:09:27,716 WARN L180 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 132 [2018-11-18 12:09:28,178 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2018-11-18 12:09:30,540 WARN L180 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 158 [2018-11-18 12:09:32,279 WARN L180 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 249 [2018-11-18 12:09:35,680 WARN L180 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 291 DAG size of output: 269 [2018-11-18 12:09:37,129 WARN L180 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 327 DAG size of output: 126 [2018-11-18 12:09:38,718 WARN L180 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2018-11-18 12:09:39,854 WARN L180 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2018-11-18 12:09:41,173 WARN L180 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2018-11-18 12:09:44,206 WARN L180 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 290 DAG size of output: 268 [2018-11-18 12:09:45,458 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-11-18 12:09:47,455 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 136 [2018-11-18 12:09:48,338 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2018-11-18 12:09:50,877 WARN L180 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 293 DAG size of output: 271 [2018-11-18 12:09:52,623 WARN L180 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-11-18 12:09:53,760 WARN L180 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 249 [2018-11-18 12:09:55,001 WARN L180 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 144 [2018-11-18 12:09:55,357 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2018-11-18 12:09:57,640 WARN L180 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 168 [2018-11-18 12:09:59,909 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 288 DAG size of output: 266 [2018-11-18 12:10:03,271 WARN L180 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 305 DAG size of output: 283 [2018-11-18 12:10:05,316 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 277 DAG size of output: 252 [2018-11-18 12:10:07,513 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 268 [2018-11-18 12:10:09,100 WARN L180 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246 [2018-11-18 12:10:10,780 WARN L180 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2018-11-18 12:10:12,223 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 140 [2018-11-18 12:10:13,701 WARN L180 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2018-11-18 12:10:14,816 WARN L180 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2018-11-18 12:10:16,008 WARN L180 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2018-11-18 12:10:19,504 WARN L180 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 297 DAG size of output: 274 [2018-11-18 12:10:20,568 WARN L180 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-11-18 12:10:21,644 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2018-11-18 12:10:22,953 WARN L180 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-11-18 12:10:24,386 WARN L180 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 150 [2018-11-18 12:10:25,188 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2018-11-18 12:10:28,278 WARN L180 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 300 DAG size of output: 277 [2018-11-18 12:10:29,978 WARN L180 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-11-18 12:10:31,718 WARN L180 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2018-11-18 12:10:33,858 WARN L180 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 264 [2018-11-18 12:10:35,244 WARN L180 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 160 [2018-11-18 12:10:37,653 WARN L180 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 174 [2018-11-18 12:10:40,643 WARN L180 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 295 DAG size of output: 272 [2018-11-18 12:10:44,517 WARN L180 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 309 DAG size of output: 286 [2018-11-18 12:10:46,398 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 277 DAG size of output: 252 [2018-11-18 12:10:48,441 WARN L180 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 268 [2018-11-18 12:10:50,262 WARN L180 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 274 DAG size of output: 249 [2018-11-18 12:10:52,139 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 266 [2018-11-18 12:10:54,386 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 280 DAG size of output: 255 [2018-11-18 12:10:56,682 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 270 [2018-11-18 12:10:58,203 WARN L180 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 154 [2018-11-18 12:10:59,597 WARN L180 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2018-11-18 12:11:00,667 WARN L180 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2018-11-18 12:11:01,694 WARN L180 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2018-11-18 12:11:05,784 WARN L180 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 304 DAG size of output: 280 [2018-11-18 12:11:07,001 WARN L180 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-11-18 12:11:08,343 WARN L180 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2018-11-18 12:11:09,898 WARN L180 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-11-18 12:11:11,299 WARN L180 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 164 [2018-11-18 12:11:15,306 WARN L180 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 307 DAG size of output: 283 [2018-11-18 12:11:17,314 WARN L180 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 264 [2018-11-18 12:11:19,426 WARN L180 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2018-11-18 12:11:21,746 WARN L180 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 269 [2018-11-18 12:11:23,473 WARN L180 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 186 [2018-11-18 12:11:26,994 WARN L180 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 302 DAG size of output: 278 [2018-11-18 12:11:31,327 WARN L180 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 313 DAG size of output: 289 [2018-11-18 12:11:33,285 WARN L180 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 280 DAG size of output: 255 [2018-11-18 12:11:35,753 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 270 [2018-11-18 12:11:37,846 WARN L180 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 277 DAG size of output: 252 [2018-11-18 12:11:39,931 WARN L180 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 268 [2018-11-18 12:11:42,204 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 283 DAG size of output: 258 [2018-11-18 12:11:44,733 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 272 [2018-11-18 12:11:46,353 WARN L180 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 168 [2018-11-18 12:11:47,537 WARN L180 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-11-18 12:11:51,982 WARN L180 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 309 DAG size of output: 284 [2018-11-18 12:11:53,557 WARN L180 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2018-11-18 12:11:55,118 WARN L180 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-11-18 12:11:56,993 WARN L180 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2018-11-18 12:11:58,672 WARN L180 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 175 [2018-11-18 12:12:00,115 WARN L180 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 113 [2018-11-18 12:12:03,768 WARN L180 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 177 [2018-11-18 12:12:06,529 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 264 [2018-11-18 12:12:07,779 WARN L180 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2018-11-18 12:12:08,382 WARN L180 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-18 12:12:11,312 WARN L180 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 269 [2018-11-18 12:12:12,050 WARN L180 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2018-11-18 12:12:14,290 WARN L180 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 262 [2018-11-18 12:12:16,961 WARN L180 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 283 DAG size of output: 236 [2018-11-18 12:12:19,119 WARN L180 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 248 [2018-11-18 12:12:23,203 WARN L180 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 234 [2018-11-18 12:12:25,594 WARN L180 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 236 [2018-11-18 12:12:27,663 WARN L180 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 222 [2018-11-18 12:12:33,343 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 12:12:33,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-11-18 12:12:33,344 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:672) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:601) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-11-18 12:12:33,346 INFO L168 Benchmark]: Toolchain (without parser) took 246909.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 949.7 MB in the beginning and 1.0 GB in the end (delta: -89.0 MB). Peak memory consumption was 95.0 MB. Max. memory is 11.5 GB. [2018-11-18 12:12:33,347 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:12:33,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.76 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:12:33,347 INFO L168 Benchmark]: Boogie Preprocessor took 24.49 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:12:33,348 INFO L168 Benchmark]: RCFGBuilder took 198.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 933.6 MB in the beginning and 1.2 GB in the end (delta: -219.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:12:33,348 INFO L168 Benchmark]: TraceAbstraction took 246510.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.5 MB). Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 114.7 MB). Peak memory consumption was 125.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:12:33,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.76 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.49 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 933.6 MB in the beginning and 1.2 GB in the end (delta: -219.9 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 246510.58 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.5 MB). Free memory was 1.2 GB in the beginning and 1.0 GB in the end (delta: 114.7 MB). Peak memory consumption was 125.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...