./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58249a19aaa2ca34edeb532954b326c7f760e66f ....................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58249a19aaa2ca34edeb532954b326c7f760e66f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:37:37,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:37:37,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:37:37,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:37:37,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:37:37,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:37:37,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:37:37,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:37:37,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:37:37,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:37:37,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:37:37,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:37:37,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:37:37,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:37:37,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:37:37,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:37:37,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:37:37,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:37:37,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:37:37,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:37:37,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:37:37,782 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:37:37,783 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:37:37,783 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:37:37,784 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:37:37,784 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:37:37,785 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:37:37,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:37:37,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:37:37,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:37:37,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:37:37,786 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:37:37,786 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:37:37,787 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:37:37,787 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:37:37,787 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:37:37,788 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:37:37,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:37:37,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:37:37,796 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:37:37,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:37:37,796 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:37:37,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:37:37,797 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:37:37,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:37:37,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:37:37,798 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:37:37,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:37:37,799 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:37:37,799 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan 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 -> Taipan 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 -> 58249a19aaa2ca34edeb532954b326c7f760e66f [2018-12-09 19:37:37,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:37:37,824 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:37:37,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:37:37,827 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:37:37,827 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:37:37,828 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-12-09 19:37:37,866 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/a52fb0fb1/c4801cd445a1479eaf14a67c5a9b24d0/FLAG4ef2c0671 [2018-12-09 19:37:38,383 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:37:38,383 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-12-09 19:37:38,389 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/a52fb0fb1/c4801cd445a1479eaf14a67c5a9b24d0/FLAG4ef2c0671 [2018-12-09 19:37:38,854 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/a52fb0fb1/c4801cd445a1479eaf14a67c5a9b24d0 [2018-12-09 19:37:38,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:37:38,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:37:38,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:37:38,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:37:38,860 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:37:38,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:37:38" (1/1) ... [2018-12-09 19:37:38,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8167c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:38, skipping insertion in model container [2018-12-09 19:37:38,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:37:38" (1/1) ... [2018-12-09 19:37:38,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:37:38,893 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:37:39,071 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:37:39,113 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:37:39,145 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:37:39,190 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:37:39,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39 WrapperNode [2018-12-09 19:37:39,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:37:39,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:37:39,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:37:39,192 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:37:39,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:37:39,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:37:39,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:37:39,220 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:37:39,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... [2018-12-09 19:37:39,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:37:39,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:37:39,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:37:39,236 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:37:39,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/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 [2018-12-09 19:37:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:37:39,269 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 19:37:39,269 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 19:37:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 19:37:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 19:37:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 19:37:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 19:37:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:37:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 19:37:39,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:37:39,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:37:39,271 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 19:37:39,419 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:37:39,419 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 19:37:39,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:39 BoogieIcfgContainer [2018-12-09 19:37:39,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:37:39,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:37:39,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:37:39,423 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:37:39,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:37:38" (1/3) ... [2018-12-09 19:37:39,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a1c940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:37:39, skipping insertion in model container [2018-12-09 19:37:39,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:39" (2/3) ... [2018-12-09 19:37:39,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a1c940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:37:39, skipping insertion in model container [2018-12-09 19:37:39,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:39" (3/3) ... [2018-12-09 19:37:39,426 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_true-unreach-call.i [2018-12-09 19:37:39,453 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,453 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,453 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,453 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,453 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,454 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,454 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,454 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,454 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,454 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,455 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,455 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,456 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,456 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,456 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,456 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,456 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,456 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,457 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,457 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,457 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,457 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,457 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,458 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,458 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:39,464 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 19:37:39,464 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:37:39,471 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:37:39,480 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:37:39,497 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:37:39,497 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:37:39,497 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:37:39,497 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:37:39,497 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:37:39,497 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:37:39,498 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:37:39,498 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:37:39,505 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-09 19:37:39,545 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-09 19:37:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-09 19:37:39,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 19:37:39,553 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:39,553 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:39,555 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:39,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:39,558 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-09 19:37:39,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:37:39,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:39,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:39,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:39,594 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:37:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:39,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:39,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:37:39,698 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:37:39,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:37:39,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:37:39,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:37:39,716 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-09 19:37:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:39,786 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-12-09 19:37:39,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:37:39,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 19:37:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:39,800 INFO L225 Difference]: With dead ends: 1411 [2018-12-09 19:37:39,801 INFO L226 Difference]: Without dead ends: 322 [2018-12-09 19:37:39,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-12-09 19:37:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-12-09 19:37:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-12-09 19:37:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-12-09 19:37:39,846 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-12-09 19:37:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:39,847 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-12-09 19:37:39,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:37:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-12-09 19:37:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 19:37:39,848 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:39,848 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:39,848 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:39,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:39,849 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-09 19:37:39,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:37:39,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:39,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:39,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:39,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:37:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:39,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:39,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:37:39,913 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:37:39,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:37:39,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:37:39,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:37:39,914 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-12-09 19:37:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:39,939 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-12-09 19:37:39,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:37:39,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 19:37:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:39,941 INFO L225 Difference]: With dead ends: 411 [2018-12-09 19:37:39,941 INFO L226 Difference]: Without dead ends: 290 [2018-12-09 19:37:39,942 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-09 19:37:39,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-09 19:37:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-09 19:37:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-09 19:37:39,950 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-09 19:37:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:39,951 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-09 19:37:39,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:37:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-09 19:37:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 19:37:39,952 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:39,952 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:39,952 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:39,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-09 19:37:39,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:37:39,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:39,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:39,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:39,955 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:37:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:40,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:40,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 19:37:40,008 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:37:40,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:37:40,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:37:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:40,008 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-09 19:37:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:40,056 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-09 19:37:40,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:37:40,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 19:37:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:40,058 INFO L225 Difference]: With dead ends: 437 [2018-12-09 19:37:40,058 INFO L226 Difference]: Without dead ends: 309 [2018-12-09 19:37:40,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:37:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-09 19:37:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-09 19:37:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-09 19:37:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-09 19:37:40,067 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-09 19:37:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:40,067 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-09 19:37:40,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:37:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-09 19:37:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 19:37:40,069 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:40,069 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:40,069 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:40,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-09 19:37:40,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:37:40,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:40,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:40,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:40,072 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:37:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:40,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:40,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 19:37:40,119 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:37:40,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:37:40,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:37:40,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:40,120 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-09 19:37:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:40,172 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-09 19:37:40,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:37:40,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 19:37:40,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:40,173 INFO L225 Difference]: With dead ends: 456 [2018-12-09 19:37:40,173 INFO L226 Difference]: Without dead ends: 319 [2018-12-09 19:37:40,173 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:37:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-09 19:37:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-09 19:37:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-09 19:37:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-09 19:37:40,179 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-09 19:37:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:40,179 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-09 19:37:40,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:37:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-09 19:37:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 19:37:40,180 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:40,180 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:40,181 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:40,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:40,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-09 19:37:40,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:37:40,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:40,183 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 19:37:40,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:37:40,183 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:37:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:40,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:37:40,221 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:37:40,222 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) 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: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-12-09 19:37:40,224 INFO L168 Benchmark]: Toolchain (without parser) took 1367.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 954.9 MB in the beginning and 945.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 127.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:40,225 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:37:40,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:40,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:37:40,226 INFO L168 Benchmark]: Boogie Preprocessor took 15.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:40,226 INFO L168 Benchmark]: RCFGBuilder took 184.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:40,227 INFO L168 Benchmark]: TraceAbstraction took 803.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 945.4 MB in the end (delta: 122.0 MB). Peak memory consumption was 122.0 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:40,228 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 333.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 954.9 MB in the beginning and 1.1 GB in the end (delta: -137.3 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.41 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 184.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 803.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 945.4 MB in the end (delta: 122.0 MB). Peak memory consumption was 122.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:37:41,611 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:37:41,612 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:37:41,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:37:41,618 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:37:41,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:37:41,619 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:37:41,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:37:41,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:37:41,621 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:37:41,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:37:41,622 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:37:41,622 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:37:41,623 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:37:41,623 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:37:41,624 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:37:41,624 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:37:41,625 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:37:41,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:37:41,627 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:37:41,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:37:41,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:37:41,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:37:41,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:37:41,629 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:37:41,629 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:37:41,630 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:37:41,630 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:37:41,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:37:41,631 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:37:41,631 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:37:41,632 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:37:41,632 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:37:41,632 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:37:41,632 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:37:41,633 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:37:41,633 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 19:37:41,640 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:37:41,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:37:41,641 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:37:41,641 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:37:41,641 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:37:41,641 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:37:41,641 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:37:41,641 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:37:41,641 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:37:41,641 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:37:41,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:37:41,642 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:37:41,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:37:41,643 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:37:41,643 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 19:37:41,644 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_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan 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 -> Taipan 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 -> 58249a19aaa2ca34edeb532954b326c7f760e66f [2018-12-09 19:37:41,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:37:41,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:37:41,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:37:41,670 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:37:41,671 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:37:41,671 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-12-09 19:37:41,705 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/058ae4188/3ffda654bd2242d691f13017cfa5b915/FLAG24be3d073 [2018-12-09 19:37:42,111 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:37:42,111 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/sv-benchmarks/c/pthread/triangular_true-unreach-call.i [2018-12-09 19:37:42,118 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/058ae4188/3ffda654bd2242d691f13017cfa5b915/FLAG24be3d073 [2018-12-09 19:37:42,126 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/data/058ae4188/3ffda654bd2242d691f13017cfa5b915 [2018-12-09 19:37:42,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:37:42,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:37:42,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:37:42,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:37:42,133 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:37:42,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d37d294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42, skipping insertion in model container [2018-12-09 19:37:42,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:37:42,164 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:37:42,372 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:37:42,382 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:37:42,460 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:37:42,493 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:37:42,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42 WrapperNode [2018-12-09 19:37:42,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:37:42,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:37:42,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:37:42,494 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:37:42,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:37:42,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:37:42,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:37:42,528 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:37:42,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... [2018-12-09 19:37:42,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:37:42,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:37:42,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:37:42,551 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:37:42,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/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 [2018-12-09 19:37:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:37:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 19:37:42,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 19:37:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 19:37:42,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 19:37:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 19:37:42,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 19:37:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 19:37:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 19:37:42,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:37:42,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:37:42,586 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 19:37:42,736 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:37:42,736 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 19:37:42,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:42 BoogieIcfgContainer [2018-12-09 19:37:42,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:37:42,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:37:42,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:37:42,740 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:37:42,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:37:42" (1/3) ... [2018-12-09 19:37:42,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25298408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:37:42, skipping insertion in model container [2018-12-09 19:37:42,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:37:42" (2/3) ... [2018-12-09 19:37:42,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25298408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:37:42, skipping insertion in model container [2018-12-09 19:37:42,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:42" (3/3) ... [2018-12-09 19:37:42,742 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_true-unreach-call.i [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,762 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,763 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,763 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,763 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,763 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,763 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,763 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,764 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,764 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,764 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,764 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,764 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,764 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,765 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,766 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,766 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 19:37:42,772 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 19:37:42,772 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:37:42,778 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:37:42,787 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:37:42,802 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:37:42,802 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:37:42,802 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:37:42,802 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:37:42,803 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:37:42,803 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:37:42,803 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:37:42,803 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:37:42,803 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:37:42,808 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-09 19:37:42,849 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-09 19:37:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-09 19:37:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 19:37:42,859 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:42,860 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:42,861 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:42,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-09 19:37:42,870 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:42,871 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:42,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:42,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:42,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:42,987 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:37:42,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:42,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:37:42,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:37:43,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:37:43,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:37:43,007 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-09 19:37:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:43,101 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2018-12-09 19:37:43,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:37:43,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 19:37:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:43,113 INFO L225 Difference]: With dead ends: 1777 [2018-12-09 19:37:43,113 INFO L226 Difference]: Without dead ends: 499 [2018-12-09 19:37:43,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:37:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-12-09 19:37:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2018-12-09 19:37:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-12-09 19:37:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2018-12-09 19:37:43,151 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2018-12-09 19:37:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:43,152 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2018-12-09 19:37:43,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:37:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2018-12-09 19:37:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 19:37:43,153 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:43,153 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:43,153 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:43,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:43,153 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-09 19:37:43,153 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:43,154 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:43,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:43,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,229 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:37:43,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:43,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:37:43,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:37:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:37:43,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:37:43,231 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2018-12-09 19:37:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:43,285 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2018-12-09 19:37:43,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:37:43,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 19:37:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:43,287 INFO L225 Difference]: With dead ends: 464 [2018-12-09 19:37:43,287 INFO L226 Difference]: Without dead ends: 343 [2018-12-09 19:37:43,288 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-12-09 19:37:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2018-12-09 19:37:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-09 19:37:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2018-12-09 19:37:43,297 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2018-12-09 19:37:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:43,297 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2018-12-09 19:37:43,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:37:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2018-12-09 19:37:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 19:37:43,298 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:43,298 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:43,298 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:43,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:43,298 INFO L82 PathProgramCache]: Analyzing trace with hash 676041288, now seen corresponding path program 1 times [2018-12-09 19:37:43,298 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:43,298 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:43,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:43,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,369 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:37:43,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:43,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:37:43,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:37:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:37:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:37:43,370 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2018-12-09 19:37:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:43,409 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2018-12-09 19:37:43,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:37:43,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 19:37:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:43,410 INFO L225 Difference]: With dead ends: 420 [2018-12-09 19:37:43,410 INFO L226 Difference]: Without dead ends: 290 [2018-12-09 19:37:43,411 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-09 19:37:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-09 19:37:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-09 19:37:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-09 19:37:43,417 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-09 19:37:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:43,417 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-09 19:37:43,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:37:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-09 19:37:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 19:37:43,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:43,418 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:43,418 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:43,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:43,418 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-09 19:37:43,418 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:43,418 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:43,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:43,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,499 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:37:43,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:43,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 19:37:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:37:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:37:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:43,501 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-09 19:37:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:43,559 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-09 19:37:43,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:37:43,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 19:37:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:43,561 INFO L225 Difference]: With dead ends: 437 [2018-12-09 19:37:43,561 INFO L226 Difference]: Without dead ends: 309 [2018-12-09 19:37:43,561 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:37:43,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-09 19:37:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-09 19:37:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-09 19:37:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-09 19:37:43,567 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-09 19:37:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:43,567 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-09 19:37:43,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:37:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-09 19:37:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 19:37:43,567 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:43,568 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:43,568 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:43,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-09 19:37:43,568 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:43,568 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:43,585 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 19:37:43,619 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-09 19:37:43,619 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:37:43,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,647 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 19:37:43,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:37:43,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 19:37:43,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:37:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:37:43,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:37:43,649 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-09 19:37:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:43,707 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-09 19:37:43,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:37:43,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 19:37:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:43,708 INFO L225 Difference]: With dead ends: 456 [2018-12-09 19:37:43,709 INFO L226 Difference]: Without dead ends: 319 [2018-12-09 19:37:43,709 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:37:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-09 19:37:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-09 19:37:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-09 19:37:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-09 19:37:43,714 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-09 19:37:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:43,714 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-09 19:37:43,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:37:43,715 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-09 19:37:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 19:37:43,715 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:43,716 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:43,716 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:43,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:43,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-09 19:37:43,716 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:43,716 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:43,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 19:37:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:43,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,812 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:37:43,914 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/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 [2018-12-09 19:37:43,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:43,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,939 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:43,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:37:43,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-09 19:37:43,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 19:37:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 19:37:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-09 19:37:43,970 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 11 states. [2018-12-09 19:37:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:44,384 INFO L93 Difference]: Finished difference Result 760 states and 1850 transitions. [2018-12-09 19:37:44,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 19:37:44,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-09 19:37:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:44,386 INFO L225 Difference]: With dead ends: 760 [2018-12-09 19:37:44,386 INFO L226 Difference]: Without dead ends: 383 [2018-12-09 19:37:44,386 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2018-12-09 19:37:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-12-09 19:37:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2018-12-09 19:37:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-12-09 19:37:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-12-09 19:37:44,392 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-12-09 19:37:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:44,392 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-12-09 19:37:44,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 19:37:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-12-09 19:37:44,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 19:37:44,393 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:44,394 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:44,394 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:44,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:44,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-12-09 19:37:44,394 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:44,395 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:44,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:44,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:44,486 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:44,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:37:44,575 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:37:44,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:44,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:44,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:44,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:37:44,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-09 19:37:44,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 19:37:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 19:37:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-09 19:37:44,634 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 11 states. [2018-12-09 19:37:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:45,074 INFO L93 Difference]: Finished difference Result 824 states and 1978 transitions. [2018-12-09 19:37:45,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 19:37:45,075 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-09 19:37:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:45,076 INFO L225 Difference]: With dead ends: 824 [2018-12-09 19:37:45,076 INFO L226 Difference]: Without dead ends: 447 [2018-12-09 19:37:45,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-12-09 19:37:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-12-09 19:37:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-12-09 19:37:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-09 19:37:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-09 19:37:45,082 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 29 [2018-12-09 19:37:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:45,082 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-09 19:37:45,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 19:37:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-09 19:37:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 19:37:45,083 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:45,083 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:45,083 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:45,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:45,083 INFO L82 PathProgramCache]: Analyzing trace with hash -956668217, now seen corresponding path program 1 times [2018-12-09 19:37:45,084 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:45,084 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:45,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:45,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 19:37:45,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 19:37:45,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:37:45,451 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:37:45,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:37:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:37:45,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 19:37:45,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 19:37:45,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:37:45,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 17 [2018-12-09 19:37:45,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-09 19:37:45,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-09 19:37:45,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-12-09 19:37:45,520 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 17 states. [2018-12-09 19:37:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:46,902 INFO L93 Difference]: Finished difference Result 1302 states and 3081 transitions. [2018-12-09 19:37:46,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-09 19:37:46,903 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-12-09 19:37:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:46,905 INFO L225 Difference]: With dead ends: 1302 [2018-12-09 19:37:46,905 INFO L226 Difference]: Without dead ends: 643 [2018-12-09 19:37:46,905 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 19:37:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-12-09 19:37:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 447. [2018-12-09 19:37:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-09 19:37:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-09 19:37:46,914 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 45 [2018-12-09 19:37:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:46,914 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-09 19:37:46,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-09 19:37:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-09 19:37:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 19:37:46,916 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:46,916 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:46,916 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:46,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:46,916 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 2 times [2018-12-09 19:37:46,916 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:46,917 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:46,934 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 19:37:47,007 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:37:47,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:37:47,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:47,103 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:47,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:37:47,945 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:37:47,957 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 19:37:47,988 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 19:37:47,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:37:47,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:47,998 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:48,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:37:48,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2018-12-09 19:37:48,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-09 19:37:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-09 19:37:48,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2018-12-09 19:37:48,030 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 25 states. [2018-12-09 19:37:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:49,886 INFO L93 Difference]: Finished difference Result 738 states and 1659 transitions. [2018-12-09 19:37:49,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-09 19:37:49,887 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-12-09 19:37:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:49,888 INFO L225 Difference]: With dead ends: 738 [2018-12-09 19:37:49,888 INFO L226 Difference]: Without dead ends: 607 [2018-12-09 19:37:49,888 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=385, Invalid=1685, Unknown=0, NotChecked=0, Total=2070 [2018-12-09 19:37:49,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2018-12-09 19:37:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2018-12-09 19:37:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2018-12-09 19:37:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1348 transitions. [2018-12-09 19:37:49,894 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1348 transitions. Word has length 57 [2018-12-09 19:37:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:49,894 INFO L480 AbstractCegarLoop]: Abstraction has 607 states and 1348 transitions. [2018-12-09 19:37:49,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-09 19:37:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1348 transitions. [2018-12-09 19:37:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-09 19:37:49,895 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:37:49,895 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:37:49,895 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:37:49,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:37:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1418711251, now seen corresponding path program 3 times [2018-12-09 19:37:49,895 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 19:37:49,895 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 19:37:49,918 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 19:37:50,010 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 19:37:50,010 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:37:50,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:50,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:50,561 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:50,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:37:50,565 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:37:50,578 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 19:37:50,634 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 19:37:50,634 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 19:37:50,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:37:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:50,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:37:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:37:50,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 19:37:50,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13] total 24 [2018-12-09 19:37:50,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 19:37:50,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 19:37:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2018-12-09 19:37:50,664 INFO L87 Difference]: Start difference. First operand 607 states and 1348 transitions. Second operand 24 states. [2018-12-09 19:37:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:37:50,917 INFO L93 Difference]: Finished difference Result 1055 states and 2012 transitions. [2018-12-09 19:37:50,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-09 19:37:50,917 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2018-12-09 19:37:50,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:37:50,918 INFO L225 Difference]: With dead ends: 1055 [2018-12-09 19:37:50,918 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 19:37:50,918 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 19:37:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 19:37:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 19:37:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 19:37:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 19:37:50,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2018-12-09 19:37:50,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:37:50,919 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 19:37:50,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 19:37:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 19:37:50,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 19:37:50,920 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 19:37:50,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:37:50 BasicIcfg [2018-12-09 19:37:50,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:37:50,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:37:50,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:37:50,922 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:37:50,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:37:42" (3/4) ... [2018-12-09 19:37:50,924 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 19:37:50,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-12-09 19:37:50,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-12-09 19:37:50,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-09 19:37:50,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 19:37:50,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 19:37:50,956 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_746dee72-58c6-4db3-ab11-edaf997c2ef4/bin-2019/utaipan/witness.graphml [2018-12-09 19:37:50,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:37:50,957 INFO L168 Benchmark]: Toolchain (without parser) took 8828.31 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 306.7 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -66.2 MB). Peak memory consumption was 240.5 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:50,958 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:37:50,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:50,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:37:50,958 INFO L168 Benchmark]: Boogie Preprocessor took 22.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:37:50,958 INFO L168 Benchmark]: RCFGBuilder took 186.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:50,958 INFO L168 Benchmark]: TraceAbstraction took 8184.04 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 152.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.1 MB). Peak memory consumption was 244.2 MB. Max. memory is 11.5 GB. [2018-12-09 19:37:50,959 INFO L168 Benchmark]: Witness Printer took 34.64 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:37:50,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 363.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 186.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8184.04 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 152.0 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 92.1 MB). Peak memory consumption was 244.2 MB. Max. memory is 11.5 GB. * Witness Printer took 34.64 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. SAFE Result, 8.1s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 761 SDtfs, 2371 SDslu, 5291 SDs, 0 SdLazy, 1075 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1061 GetRequests, 884 SyntacticMatches, 3 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, 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, 10 MinimizatonAttempts, 374 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 256460 SizeOfPredicates, 112 NumberOfNonLiveVariables, 940 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 16/608 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...