./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqm.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f28b7ab3055e589a8e84ed436fe6416e6e0d145c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqm.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f28b7ab3055e589a8e84ed436fe6416e6e0d145c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (concat (_ BitVec 32) (_ BitVec 32) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:34:01,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:34:01,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:34:01,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:34:01,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:34:01,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:34:01,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:34:01,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:34:01,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:34:01,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:34:01,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:34:01,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:34:01,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:34:01,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:34:01,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:34:01,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:34:01,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:34:01,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:34:02,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:34:02,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:34:02,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:34:02,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:34:02,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:34:02,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:34:02,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:34:02,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:34:02,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:34:02,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:34:02,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:34:02,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:34:02,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:34:02,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:34:02,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:34:02,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:34:02,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:34:02,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:34:02,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:34:02,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:34:02,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:34:02,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:34:02,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:34:02,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:34:02,052 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:34:02,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:34:02,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:34:02,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:34:02,064 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:34:02,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:34:02,065 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:34:02,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:34:02,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:34:02,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:34:02,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:34:02,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:34:02,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:34:02,066 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:34:02,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:34:02,067 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:34:02,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:34:02,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:34:02,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:34:02,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:34:02,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:34:02,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:34:02,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:34:02,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:34:02,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:34:02,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:34:02,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:34:02,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:34:02,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f28b7ab3055e589a8e84ed436fe6416e6e0d145c [2019-11-15 23:34:02,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:34:02,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:34:02,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:34:02,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:34:02,127 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:34:02,128 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/../../sv-benchmarks/c/array-fpi/nsqm.c [2019-11-15 23:34:02,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/b4b761763/3e19124ae3f44ccebff62075f2ebae9f/FLAGa54c2aa66 [2019-11-15 23:34:02,574 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:34:02,575 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/sv-benchmarks/c/array-fpi/nsqm.c [2019-11-15 23:34:02,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/b4b761763/3e19124ae3f44ccebff62075f2ebae9f/FLAGa54c2aa66 [2019-11-15 23:34:02,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/b4b761763/3e19124ae3f44ccebff62075f2ebae9f [2019-11-15 23:34:02,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:34:02,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:34:02,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:34:02,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:34:02,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:34:02,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:34:02" (1/1) ... [2019-11-15 23:34:02,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e0890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:02, skipping insertion in model container [2019-11-15 23:34:02,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:34:02" (1/1) ... [2019-11-15 23:34:02,990 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:34:03,006 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:34:03,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:34:03,284 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:34:03,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:34:03,322 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:34:03,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03 WrapperNode [2019-11-15 23:34:03,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:34:03,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:34:03,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:34:03,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:34:03,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:34:03,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:34:03,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:34:03,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:34:03,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... [2019-11-15 23:34:03,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:34:03,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:34:03,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:34:03,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:34:03,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:34:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:34:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 23:34:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:34:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:34:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:34:03,720 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:34:03,720 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-15 23:34:03,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:34:03 BoogieIcfgContainer [2019-11-15 23:34:03,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:34:03,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:34:03,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:34:03,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:34:03,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:34:02" (1/3) ... [2019-11-15 23:34:03,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af70ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:34:03, skipping insertion in model container [2019-11-15 23:34:03,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:34:03" (2/3) ... [2019-11-15 23:34:03,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af70ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:34:03, skipping insertion in model container [2019-11-15 23:34:03,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:34:03" (3/3) ... [2019-11-15 23:34:03,729 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqm.c [2019-11-15 23:34:03,738 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:34:03,744 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:34:03,754 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:34:03,776 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:34:03,776 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:34:03,777 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:34:03,777 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:34:03,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:34:03,777 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:34:03,777 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:34:03,777 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:34:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-15 23:34:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:34:03,797 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:03,798 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:03,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:03,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1486647931, now seen corresponding path program 1 times [2019-11-15 23:34:03,813 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:03,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460348766] [2019-11-15 23:34:03,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:03,813 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:03,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:03,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460348766] [2019-11-15 23:34:03,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:34:03,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:34:03,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115541565] [2019-11-15 23:34:03,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:34:03,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:03,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:34:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:34:03,971 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-15 23:34:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:03,985 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-11-15 23:34:03,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:34:03,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:34:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:03,994 INFO L225 Difference]: With dead ends: 33 [2019-11-15 23:34:03,994 INFO L226 Difference]: Without dead ends: 15 [2019-11-15 23:34:03,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:34:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-15 23:34:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-15 23:34:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 23:34:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-15 23:34:04,024 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-11-15 23:34:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:04,025 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-15 23:34:04,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:34:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-15 23:34:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:34:04,026 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:04,026 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:04,026 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1772723449, now seen corresponding path program 1 times [2019-11-15 23:34:04,027 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:04,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079880620] [2019-11-15 23:34:04,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:04,027 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:04,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:04,047 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:04,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290626221] [2019-11-15 23:34:04,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:04,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:34:04,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:04,229 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:04,230 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 43 [2019-11-15 23:34:04,231 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:04,280 INFO L567 ElimStorePlain]: treesize reduction 18, result has 60.9 percent of original size [2019-11-15 23:34:04,282 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:34:04,282 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:33, output treesize:13 [2019-11-15 23:34:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:04,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079880620] [2019-11-15 23:34:04,333 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:04,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290626221] [2019-11-15 23:34:04,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:34:04,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:34:04,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70143730] [2019-11-15 23:34:04,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:34:04,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:34:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:34:04,336 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2019-11-15 23:34:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:04,487 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-15 23:34:04,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:34:04,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-15 23:34:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:04,490 INFO L225 Difference]: With dead ends: 32 [2019-11-15 23:34:04,491 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 23:34:04,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:34:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 23:34:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2019-11-15 23:34:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 23:34:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-15 23:34:04,499 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2019-11-15 23:34:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:04,499 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-15 23:34:04,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:34:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-15 23:34:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:34:04,500 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:04,504 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:04,716 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:04,716 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash 130601367, now seen corresponding path program 1 times [2019-11-15 23:34:04,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:04,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879490268] [2019-11-15 23:34:04,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:04,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:04,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:04,750 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:04,750 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725450597] [2019-11-15 23:34:04,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:04,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:34:04,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:04,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879490268] [2019-11-15 23:34:04,835 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:04,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725450597] [2019-11-15 23:34:04,835 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:34:04,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:34:04,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73132887] [2019-11-15 23:34:04,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:34:04,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:34:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:34:04,837 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-11-15 23:34:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:04,951 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-11-15 23:34:04,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:34:04,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-15 23:34:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:04,954 INFO L225 Difference]: With dead ends: 47 [2019-11-15 23:34:04,954 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 23:34:04,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:34:04,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 23:34:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 21. [2019-11-15 23:34:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 23:34:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-15 23:34:04,959 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 12 [2019-11-15 23:34:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:04,960 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-15 23:34:04,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:34:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-15 23:34:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:34:04,960 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:04,961 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:05,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:05,165 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:05,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:05,165 INFO L82 PathProgramCache]: Analyzing trace with hash 827904471, now seen corresponding path program 1 times [2019-11-15 23:34:05,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:05,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092615050] [2019-11-15 23:34:05,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:05,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:05,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:05,183 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:05,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316566474] [2019-11-15 23:34:05,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:05,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:34:05,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:05,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092615050] [2019-11-15 23:34:05,281 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:05,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316566474] [2019-11-15 23:34:05,282 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:34:05,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 23:34:05,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144485659] [2019-11-15 23:34:05,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:34:05,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:34:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:34:05,283 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2019-11-15 23:34:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:05,402 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-11-15 23:34:05,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:34:05,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-15 23:34:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:05,404 INFO L225 Difference]: With dead ends: 42 [2019-11-15 23:34:05,404 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 23:34:05,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:34:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 23:34:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22. [2019-11-15 23:34:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:34:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-15 23:34:05,410 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-15 23:34:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:05,410 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-15 23:34:05,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:34:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-15 23:34:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:34:05,411 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:05,411 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:05,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:05,612 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:05,612 INFO L82 PathProgramCache]: Analyzing trace with hash 437833903, now seen corresponding path program 1 times [2019-11-15 23:34:05,613 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:05,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191915462] [2019-11-15 23:34:05,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:05,613 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:05,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:05,624 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:05,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653733392] [2019-11-15 23:34:05,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:05,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:34:05,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:05,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191915462] [2019-11-15 23:34:05,702 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:05,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653733392] [2019-11-15 23:34:05,702 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:34:05,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 23:34:05,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842667940] [2019-11-15 23:34:05,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:34:05,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:05,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:34:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:34:05,703 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-15 23:34:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:05,791 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-15 23:34:05,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:34:05,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-15 23:34:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:05,792 INFO L225 Difference]: With dead ends: 39 [2019-11-15 23:34:05,793 INFO L226 Difference]: Without dead ends: 25 [2019-11-15 23:34:05,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:34:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-15 23:34:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2019-11-15 23:34:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-15 23:34:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-15 23:34:05,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2019-11-15 23:34:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:05,797 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-15 23:34:05,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:34:05,797 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-15 23:34:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:34:05,797 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:05,798 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:06,000 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:06,001 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1602337035, now seen corresponding path program 1 times [2019-11-15 23:34:06,001 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:06,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298904696] [2019-11-15 23:34:06,002 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:06,002 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:06,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:06,014 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:06,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13256157] [2019-11-15 23:34:06,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:06,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 23:34:06,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:06,084 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-15 23:34:06,085 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:06,095 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:06,103 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2019-11-15 23:34:06,103 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:06,117 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:06,117 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:34:06,117 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:24 [2019-11-15 23:34:06,188 INFO L341 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2019-11-15 23:34:06,188 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 74 [2019-11-15 23:34:06,190 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:06,234 INFO L567 ElimStorePlain]: treesize reduction 27, result has 66.7 percent of original size [2019-11-15 23:34:06,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,239 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:34:06,239 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:54 [2019-11-15 23:34:06,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,396 INFO L392 ElimStorePlain]: Different costs {12=[v_prenex_3], 20=[|v_#memory_int_12|]} [2019-11-15 23:34:06,404 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:34:06,408 INFO L341 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2019-11-15 23:34:06,408 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2019-11-15 23:34:06,410 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:06,458 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:06,472 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:34:06,509 INFO L341 Elim1Store]: treesize reduction 17, result has 60.5 percent of original size [2019-11-15 23:34:06,510 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 95 [2019-11-15 23:34:06,511 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:06,595 INFO L567 ElimStorePlain]: treesize reduction 50, result has 70.1 percent of original size [2019-11-15 23:34:06,597 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2019-11-15 23:34:06,597 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:127, output treesize:117 [2019-11-15 23:34:06,935 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-15 23:34:06,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:06,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298904696] [2019-11-15 23:34:06,973 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:06,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13256157] [2019-11-15 23:34:06,973 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:34:06,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-11-15 23:34:06,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825413970] [2019-11-15 23:34:06,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:34:06,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:06,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:34:06,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:34:06,975 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2019-11-15 23:34:07,451 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-11-15 23:34:08,234 WARN L191 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2019-11-15 23:34:09,261 WARN L191 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2019-11-15 23:34:10,012 WARN L191 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2019-11-15 23:34:11,072 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-11-15 23:34:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:11,401 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-11-15 23:34:11,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:34:11,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-15 23:34:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:11,402 INFO L225 Difference]: With dead ends: 42 [2019-11-15 23:34:11,402 INFO L226 Difference]: Without dead ends: 40 [2019-11-15 23:34:11,403 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:34:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-15 23:34:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2019-11-15 23:34:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:34:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-15 23:34:11,409 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 14 [2019-11-15 23:34:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:11,409 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-15 23:34:11,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:34:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-15 23:34:11,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:34:11,410 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:11,410 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:11,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:11,611 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash -602215277, now seen corresponding path program 2 times [2019-11-15 23:34:11,611 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:11,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6302937] [2019-11-15 23:34:11,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:11,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:11,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:11,631 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:11,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919889517] [2019-11-15 23:34:11,636 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:11,680 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:34:11,680 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:34:11,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:34:11,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:11,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6302937] [2019-11-15 23:34:11,719 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:11,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919889517] [2019-11-15 23:34:11,720 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:34:11,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-15 23:34:11,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284271894] [2019-11-15 23:34:11,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:34:11,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:11,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:34:11,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:34:11,721 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2019-11-15 23:34:11,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:11,839 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2019-11-15 23:34:11,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 23:34:11,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-11-15 23:34:11,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:11,843 INFO L225 Difference]: With dead ends: 59 [2019-11-15 23:34:11,843 INFO L226 Difference]: Without dead ends: 50 [2019-11-15 23:34:11,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-15 23:34:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-15 23:34:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 26. [2019-11-15 23:34:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:34:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-15 23:34:11,849 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2019-11-15 23:34:11,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:11,849 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-15 23:34:11,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:34:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-15 23:34:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:34:11,850 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:11,850 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:12,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:12,051 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:12,052 INFO L82 PathProgramCache]: Analyzing trace with hash -508830509, now seen corresponding path program 3 times [2019-11-15 23:34:12,052 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:12,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485598631] [2019-11-15 23:34:12,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:12,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:12,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:12,063 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:12,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688041141] [2019-11-15 23:34:12,069 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:12,110 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 23:34:12,110 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:34:12,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:34:12,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:12,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485598631] [2019-11-15 23:34:12,138 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:12,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688041141] [2019-11-15 23:34:12,138 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:34:12,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-15 23:34:12,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980938049] [2019-11-15 23:34:12,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:34:12,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:12,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:34:12,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:34:12,140 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-11-15 23:34:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:12,234 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2019-11-15 23:34:12,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 23:34:12,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-11-15 23:34:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:12,235 INFO L225 Difference]: With dead ends: 54 [2019-11-15 23:34:12,235 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 23:34:12,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:34:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 23:34:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2019-11-15 23:34:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:34:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-11-15 23:34:12,242 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-11-15 23:34:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:12,242 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-11-15 23:34:12,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:34:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-11-15 23:34:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:34:12,243 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:12,243 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:12,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:12,444 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash 575675563, now seen corresponding path program 1 times [2019-11-15 23:34:12,444 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:12,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702906455] [2019-11-15 23:34:12,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:12,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:12,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:12,455 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:12,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910006536] [2019-11-15 23:34:12,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:34:12,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-15 23:34:12,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:12,506 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-15 23:34:12,507 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:12,515 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:12,521 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2019-11-15 23:34:12,522 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:12,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:12,530 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:34:12,530 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:27 [2019-11-15 23:34:12,557 INFO L341 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2019-11-15 23:34:12,557 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 34 [2019-11-15 23:34:12,558 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:12,568 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:12,568 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:34:12,569 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:41 [2019-11-15 23:34:12,620 INFO L341 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2019-11-15 23:34:12,621 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 49 [2019-11-15 23:34:12,622 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:12,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:12,634 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:34:12,634 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:65, output treesize:49 [2019-11-15 23:34:12,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:34:12,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702906455] [2019-11-15 23:34:12,880 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:34:12,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910006536] [2019-11-15 23:34:12,880 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:34:12,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-11-15 23:34:12,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79903939] [2019-11-15 23:34:12,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:34:12,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:34:12,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:34:12,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:34:12,882 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 10 states. [2019-11-15 23:34:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:34:13,260 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2019-11-15 23:34:13,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 23:34:13,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-15 23:34:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:34:13,264 INFO L225 Difference]: With dead ends: 43 [2019-11-15 23:34:13,264 INFO L226 Difference]: Without dead ends: 41 [2019-11-15 23:34:13,264 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:34:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-15 23:34:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2019-11-15 23:34:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 23:34:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2019-11-15 23:34:13,270 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2019-11-15 23:34:13,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:34:13,271 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2019-11-15 23:34:13,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:34:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2019-11-15 23:34:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:34:13,271 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:34:13,272 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:34:13,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:13,475 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:34:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:34:13,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2009431311, now seen corresponding path program 4 times [2019-11-15 23:34:13,475 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:34:13,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341355999] [2019-11-15 23:34:13,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:13,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:34:13,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:34:13,501 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:34:13,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864505544] [2019-11-15 23:34:13,501 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:34:13,553 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 23:34:13,554 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 23:34:13,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-15 23:34:13,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:34:13,569 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-15 23:34:13,569 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:13,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:13,590 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2019-11-15 23:34:13,590 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:13,600 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:13,601 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:34:13,601 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:27 [2019-11-15 23:34:13,656 INFO L341 Elim1Store]: treesize reduction 54, result has 46.0 percent of original size [2019-11-15 23:34:13,656 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 74 [2019-11-15 23:34:13,657 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:13,713 INFO L567 ElimStorePlain]: treesize reduction 27, result has 67.9 percent of original size [2019-11-15 23:34:13,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,714 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:34:13,715 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:57 [2019-11-15 23:34:13,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,776 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:34:13,785 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:34:13,909 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-11-15 23:34:13,909 INFO L341 Elim1Store]: treesize reduction 17, result has 92.5 percent of original size [2019-11-15 23:34:13,910 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 75 treesize of output 264 [2019-11-15 23:34:13,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,915 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:13,924 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:34:13,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:34:13,959 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:34:13,959 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 155 [2019-11-15 23:34:13,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:13,962 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:34:14,140 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 52 [2019-11-15 23:34:14,140 INFO L567 ElimStorePlain]: treesize reduction 796, result has 16.0 percent of original size [2019-11-15 23:34:14,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:14,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:14,143 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2019-11-15 23:34:14,143 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:137, output treesize:152 [2019-11-15 23:34:14,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:14,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:14,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:14,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:15,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:15,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:15,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:34:15,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:35:21,545 WARN L191 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-11-15 23:35:21,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-15 23:35:21,556 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,557 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,558 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,558 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,563 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,589 INFO L341 Elim1Store]: treesize reduction 17, result has 67.9 percent of original size [2019-11-15 23:35:21,590 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 123 [2019-11-15 23:35:21,591 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:35:21,621 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,627 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,628 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,629 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,638 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,657 INFO L341 Elim1Store]: treesize reduction 18, result has 67.3 percent of original size [2019-11-15 23:35:21,657 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 125 [2019-11-15 23:35:21,658 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:35:21,672 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,673 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,674 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,674 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,675 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,684 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,689 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 71 [2019-11-15 23:35:21,690 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 23:35:21,696 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:35:21,697 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,698 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,700 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,701 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:35:21,702 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 80 [2019-11-15 23:35:21,703 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-15 23:35:21,896 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-11-15 23:35:21,896 INFO L567 ElimStorePlain]: treesize reduction 148, result has 70.2 percent of original size [2019-11-15 23:35:21,897 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 4 xjuncts. [2019-11-15 23:35:21,897 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:328, output treesize:348 [2019-11-15 23:36:02,871 WARN L191 SmtUtils]: Spent 38.55 s on a formula simplification that was a NOOP. DAG size: 71 [2019-11-15 23:36:02,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-15 23:36:41,214 WARN L191 SmtUtils]: Spent 36.14 s on a formula simplification that was a NOOP. DAG size: 67 [2019-11-15 23:36:41,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-15 23:36:41,230 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,233 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,235 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,239 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,241 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,242 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,321 INFO L341 Elim1Store]: treesize reduction 18, result has 81.3 percent of original size [2019-11-15 23:36:41,321 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 196 [2019-11-15 23:36:41,323 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:36:41,341 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,346 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,348 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,350 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,352 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,354 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,356 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,358 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,441 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:36:41,441 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 116 [2019-11-15 23:36:41,443 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:36:41,454 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,461 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,463 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,465 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,467 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,471 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,543 INFO L341 Elim1Store]: treesize reduction 17, result has 81.7 percent of original size [2019-11-15 23:36:41,544 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 108 treesize of output 194 [2019-11-15 23:36:41,545 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 23:36:41,554 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,557 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,560 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,561 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,562 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,563 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,565 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,566 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:36:41,571 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:36:41,572 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 124 [2019-11-15 23:36:41,573 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-15 23:36:41,810 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2019-11-15 23:36:41,810 INFO L567 ElimStorePlain]: treesize reduction 401, result has 49.1 percent of original size [2019-11-15 23:36:41,812 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 14 dim-0 vars, and 4 xjuncts. [2019-11-15 23:36:41,813 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:418, output treesize:387 [2019-11-15 23:37:04,001 WARN L191 SmtUtils]: Spent 22.12 s on a formula simplification that was a NOOP. DAG size: 140 [2019-11-15 23:37:05,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:37:05,032 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:118) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:178) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:580) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 48 more [2019-11-15 23:37:05,035 INFO L168 Benchmark]: Toolchain (without parser) took 182060.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -168.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:37:05,036 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:37:05,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:05,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.57 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. [2019-11-15 23:37:05,037 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:05,037 INFO L168 Benchmark]: RCFGBuilder took 334.59 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:37:05,037 INFO L168 Benchmark]: TraceAbstraction took 181311.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -1.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -11.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:37:05,039 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -179.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.57 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 24.53 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 334.59 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 181311.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -1.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -11.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 23:37:06,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:37:06,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:37:06,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:37:06,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:37:06,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:37:06,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:37:06,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:37:06,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:37:06,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:37:06,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:37:06,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:37:06,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:37:06,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:37:06,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:37:06,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:37:06,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:37:06,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:37:06,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:37:06,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:37:06,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:37:06,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:37:06,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:37:06,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:37:06,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:37:06,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:37:06,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:37:06,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:37:06,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:37:06,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:37:06,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:37:06,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:37:06,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:37:06,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:37:06,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:37:06,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:37:06,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:37:06,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:37:06,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:37:06,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:37:06,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:37:06,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:37:06,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:37:06,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:37:06,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:37:06,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:37:06,885 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:37:06,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:37:06,886 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:37:06,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:37:06,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:37:06,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:37:06,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:37:06,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:37:06,887 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:37:06,887 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:37:06,887 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:37:06,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:37:06,888 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:37:06,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:37:06,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:37:06,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:37:06,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:37:06,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:37:06,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:37:06,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:37:06,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:37:06,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:37:06,890 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:37:06,890 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:37:06,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:37:06,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:37:06,891 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f28b7ab3055e589a8e84ed436fe6416e6e0d145c [2019-11-15 23:37:06,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:37:06,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:37:06,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:37:06,943 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:37:06,944 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:37:06,945 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/../../sv-benchmarks/c/array-fpi/nsqm.c [2019-11-15 23:37:06,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/6b0b7469d/bd58511d1f96420fa7577f65f1471e4e/FLAG0e0877560 [2019-11-15 23:37:07,330 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:37:07,330 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/sv-benchmarks/c/array-fpi/nsqm.c [2019-11-15 23:37:07,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/6b0b7469d/bd58511d1f96420fa7577f65f1471e4e/FLAG0e0877560 [2019-11-15 23:37:07,741 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/data/6b0b7469d/bd58511d1f96420fa7577f65f1471e4e [2019-11-15 23:37:07,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:37:07,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:37:07,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:37:07,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:37:07,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:37:07,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:37:07" (1/1) ... [2019-11-15 23:37:07,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d93363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:07, skipping insertion in model container [2019-11-15 23:37:07,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:37:07" (1/1) ... [2019-11-15 23:37:07,761 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:37:07,777 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:37:07,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:37:07,980 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:37:08,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:37:08,038 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:37:08,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08 WrapperNode [2019-11-15 23:37:08,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:37:08,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:37:08,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:37:08,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:37:08,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:37:08,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:37:08,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:37:08,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:37:08,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... [2019-11-15 23:37:08,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:37:08,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:37:08,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:37:08,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:37:08,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:37:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-11-15 23:37:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 23:37:08,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:37:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:37:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-11-15 23:37:08,590 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:37:08,590 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-15 23:37:08,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:08 BoogieIcfgContainer [2019-11-15 23:37:08,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:37:08,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:37:08,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:37:08,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:37:08,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:37:07" (1/3) ... [2019-11-15 23:37:08,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65225c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:37:08, skipping insertion in model container [2019-11-15 23:37:08,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:37:08" (2/3) ... [2019-11-15 23:37:08,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65225c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:37:08, skipping insertion in model container [2019-11-15 23:37:08,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:37:08" (3/3) ... [2019-11-15 23:37:08,598 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqm.c [2019-11-15 23:37:08,623 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:37:08,630 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:37:08,640 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:37:08,677 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:37:08,677 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:37:08,678 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:37:08,678 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:37:08,678 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:37:08,678 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:37:08,678 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:37:08,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:37:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-15 23:37:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:37:08,696 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:08,697 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:37:08,698 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1486647931, now seen corresponding path program 1 times [2019-11-15 23:37:08,712 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:37:08,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1673109403] [2019-11-15 23:37:08,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/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 [2019-11-15 23:37:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:37:08,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:37:08,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:37:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:08,835 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:37:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:08,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1673109403] [2019-11-15 23:37:08,840 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:37:08,840 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:37:08,840 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343327282] [2019-11-15 23:37:08,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:37:08,844 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:37:08,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:37:08,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:37:08,856 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-15 23:37:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:37:08,869 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-11-15 23:37:08,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:37:08,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:37:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:37:08,879 INFO L225 Difference]: With dead ends: 33 [2019-11-15 23:37:08,879 INFO L226 Difference]: Without dead ends: 15 [2019-11-15 23:37:08,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:37:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-15 23:37:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-15 23:37:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 23:37:08,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-15 23:37:08,912 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-11-15 23:37:08,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:37:08,912 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-15 23:37:08,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:37:08,913 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-15 23:37:08,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:37:08,913 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:08,913 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:37:09,115 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:37:09,115 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1772723449, now seen corresponding path program 1 times [2019-11-15 23:37:09,116 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:37:09,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [153981053] [2019-11-15 23:37:09,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/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 [2019-11-15 23:37:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:37:09,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:37:09,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:37:09,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:09,306 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:09,448 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-15 23:37:09,448 INFO L341 Elim1Store]: treesize reduction 33, result has 65.3 percent of original size [2019-11-15 23:37:09,449 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 86 [2019-11-15 23:37:09,450 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:37:09,552 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2019-11-15 23:37:09,553 INFO L567 ElimStorePlain]: treesize reduction 50, result has 47.9 percent of original size [2019-11-15 23:37:09,554 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-15 23:37:09,555 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:91, output treesize:46 [2019-11-15 23:37:09,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:37:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:09,851 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:37:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:10,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153981053] [2019-11-15 23:37:10,319 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:37:10,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-15 23:37:10,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411603323] [2019-11-15 23:37:10,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 23:37:10,321 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:37:10,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 23:37:10,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:37:10,322 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 10 states. [2019-11-15 23:37:11,273 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-15 23:37:11,601 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-15 23:37:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:37:11,961 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-11-15 23:37:11,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 23:37:11,964 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-15 23:37:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:37:11,965 INFO L225 Difference]: With dead ends: 39 [2019-11-15 23:37:11,965 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 23:37:11,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2019-11-15 23:37:11,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 23:37:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2019-11-15 23:37:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 23:37:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-15 23:37:11,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-11-15 23:37:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:37:11,973 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-15 23:37:11,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 23:37:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-15 23:37:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:37:11,974 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:11,974 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:37:12,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:37:12,177 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1531340429, now seen corresponding path program 1 times [2019-11-15 23:37:12,178 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:37:12,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [210412123] [2019-11-15 23:37:12,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/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 [2019-11-15 23:37:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:37:12,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:37:12,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:37:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:37:12,368 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:37:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 23:37:12,488 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [210412123] [2019-11-15 23:37:12,488 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:37:12,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-15 23:37:12,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854047441] [2019-11-15 23:37:12,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:37:12,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:37:12,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:37:12,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:37:12,490 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 12 states. [2019-11-15 23:37:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:37:12,880 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2019-11-15 23:37:12,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 23:37:12,883 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-11-15 23:37:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:37:12,884 INFO L225 Difference]: With dead ends: 49 [2019-11-15 23:37:12,884 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 23:37:12,884 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2019-11-15 23:37:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 23:37:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2019-11-15 23:37:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-15 23:37:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-15 23:37:12,891 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-11-15 23:37:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:37:12,892 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-15 23:37:12,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:37:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-15 23:37:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:37:12,893 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:37:12,893 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:37:13,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:37:13,096 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:37:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:37:13,096 INFO L82 PathProgramCache]: Analyzing trace with hash 575675563, now seen corresponding path program 1 times [2019-11-15 23:37:13,097 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:37:13,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [418343096] [2019-11-15 23:37:13,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aaaa9648-c432-4a02-9037-2b57d41af437/bin/uautomizer/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 [2019-11-15 23:37:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:37:13,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-15 23:37:13,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:37:13,393 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,416 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-11-15 23:37:13,416 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:37:13,517 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-11-15 23:37:13,517 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:37:13,529 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,532 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,534 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,535 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,537 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,538 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,540 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:37:13,560 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:37:13,560 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 92 [2019-11-15 23:37:13,564 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,579 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2019-11-15 23:37:13,579 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-15 23:37:13,638 INFO L567 ElimStorePlain]: treesize reduction 15, result has 78.3 percent of original size [2019-11-15 23:37:13,638 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:37:13,710 INFO L567 ElimStorePlain]: treesize reduction 18, result has 73.1 percent of original size [2019-11-15 23:37:13,710 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:37:13,711 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:127, output treesize:49 [2019-11-15 23:37:13,761 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,765 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,767 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,768 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,770 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:13,771 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:37:13,772 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:37:13,773 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:37:13,811 INFO L341 Elim1Store]: treesize reduction 8, result has 71.4 percent of original size [2019-11-15 23:37:13,812 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 106 [2019-11-15 23:37:13,814 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:37:13,945 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-11-15 23:37:13,946 INFO L567 ElimStorePlain]: treesize reduction 50, result has 63.5 percent of original size [2019-11-15 23:37:13,946 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:37:13,946 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:92, output treesize:87 [2019-11-15 23:37:14,282 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,284 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,285 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,286 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,289 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:37:14,290 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,291 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,292 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,295 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 23:37:14,297 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-15 23:37:14,360 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:37:14,360 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 135 treesize of output 150 [2019-11-15 23:37:14,364 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 23:37:14,487 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-11-15 23:37:14,487 INFO L567 ElimStorePlain]: treesize reduction 88, result has 59.1 percent of original size [2019-11-15 23:37:14,488 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:37:14,488 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:145, output treesize:127 [2019-11-15 23:37:14,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:37:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:14,909 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:37:18,821 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-15 23:37:19,684 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2019-11-15 23:37:21,543 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-11-15 23:37:23,656 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-15 23:37:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:37:23,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418343096] [2019-11-15 23:37:23,681 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:37:23,681 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2019-11-15 23:37:23,681 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513999391] [2019-11-15 23:37:23,682 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-15 23:37:23,682 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:37:23,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-15 23:37:23,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=324, Unknown=1, NotChecked=0, Total=380 [2019-11-15 23:37:23,683 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 20 states. [2019-11-15 23:37:42,354 WARN L191 SmtUtils]: Spent 17.18 s on a formula simplification that was a NOOP. DAG size: 114 [2019-11-15 23:37:51,383 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-11-15 23:37:52,177 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-11-15 23:37:55,798 WARN L191 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2019-11-15 23:38:15,404 WARN L191 SmtUtils]: Spent 12.83 s on a formula simplification that was a NOOP. DAG size: 91 [2019-11-15 23:38:17,554 WARN L191 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 136 DAG size of output: 68 [2019-11-15 23:38:19,944 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 128 DAG size of output: 70 [2019-11-15 23:38:21,102 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2019-11-15 23:38:22,342 WARN L191 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2019-11-15 23:38:23,914 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-11-15 23:38:26,092 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 142 DAG size of output: 72 [2019-11-15 23:38:27,346 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-11-15 23:38:31,496 WARN L191 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 135 DAG size of output: 74 [2019-11-15 23:38:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:38:31,804 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-15 23:38:31,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 23:38:31,809 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2019-11-15 23:38:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:38:31,810 INFO L225 Difference]: With dead ends: 41 [2019-11-15 23:38:31,810 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:38:31,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 61.9s TimeCoverageRelationStatistics Valid=214, Invalid=904, Unknown=4, NotChecked=0, Total=1122 [2019-11-15 23:38:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:38:31,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:38:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:38:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:38:31,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-15 23:38:31,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:38:31,812 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:38:31,812 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-15 23:38:31,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:38:31,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:38:32,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 23:38:32,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:38:32,326 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2019-11-15 23:39:01,848 WARN L191 SmtUtils]: Spent 29.52 s on a formula simplification. DAG size of input: 119 DAG size of output: 89 [2019-11-15 23:39:02,874 WARN L191 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-11-15 23:39:02,875 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-15 23:39:02,875 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-15 23:39:02,875 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-15 23:39:02,875 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:39:02,876 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:39:02,876 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:39:02,876 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 32) no Hoare annotation was computed. [2019-11-15 23:39:02,876 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 32) the Hoare annotation is: (let ((.cse4 (select |#memory_int| ULTIMATE.start_main_~a~0.base))) (let ((.cse2 (select .cse4 (bvadd ULTIMATE.start_main_~a~0.offset (_ bv4 32)))) (.cse3 (select .cse4 ULTIMATE.start_main_~a~0.offset))) (let ((.cse0 ((_ sign_extend 32) (bvadd ~N~0 (_ bv1 32)))) (.cse1 (concat .cse2 .cse3))) (or (and (bvslt (_ bv1 32) ~N~0) (= .cse0 .cse1)) (let ((.cse12 (select |#memory_int| ULTIMATE.start_main_~b~0.base))) (let ((.cse11 (select .cse12 (bvadd ULTIMATE.start_main_~b~0.offset (_ bv4 32)))) (.cse10 (bvadd ULTIMATE.start_main_~a~0.offset (_ bv12 32))) (.cse5 (bvadd ULTIMATE.start_main_~a~0.offset (_ bv8 32))) (.cse9 ((_ sign_extend 32) (bvadd ~N~0 (_ bv4 32)))) (.cse13 ((_ sign_extend 32) (_ bv2 32)))) (and (= .cse2 ((_ extract 63 32) .cse0)) (= ((_ extract 31 0) .cse0) .cse3) (= (_ bv0 32) ULTIMATE.start_main_~a~0.offset) (= (_ bv0 32) ULTIMATE.start_main_~b~0.offset) (not (bvsle ~N~0 (_ bv0 32))) (let ((.cse6 (bvadd (concat .cse11 (select .cse12 ULTIMATE.start_main_~b~0.offset)) .cse1 .cse13))) (let ((.cse8 ((_ extract 63 32) .cse6))) (let ((.cse7 (store .cse4 .cse10 .cse8))) (or (not (= (store |#memory_int| ULTIMATE.start_main_~a~0.base (store .cse4 .cse5 ((_ extract 31 0) .cse6))) (store |#memory_int| ULTIMATE.start_main_~a~0.base .cse7))) (= (concat .cse8 (select .cse7 .cse5)) .cse9))))) (= ((_ extract 63 32) ((_ sign_extend 32) (_ bv1 32))) .cse11) (let ((.cse15 (bvmul ULTIMATE.start_main_~i~0 (_ bv8 32)))) (let ((.cse16 (bvadd (concat (select .cse12 (bvadd .cse15 ULTIMATE.start_main_~b~0.offset (_ bv4294967292 32))) (select .cse12 (bvadd .cse15 ULTIMATE.start_main_~b~0.offset (_ bv4294967288 32)))) .cse13 (concat (select .cse4 (bvadd ULTIMATE.start_main_~a~0.offset .cse15 (_ bv4294967292 32))) (select .cse4 (bvadd ULTIMATE.start_main_~a~0.offset .cse15 (_ bv4294967288 32))))))) (let ((.cse14 (store .cse4 (bvadd ULTIMATE.start_main_~a~0.offset .cse15 (_ bv4 32)) ((_ extract 63 32) .cse16)))) (or (not (= (store |#memory_int| ULTIMATE.start_main_~a~0.base .cse14) (store |#memory_int| ULTIMATE.start_main_~a~0.base (store .cse4 (bvadd ULTIMATE.start_main_~a~0.offset .cse15) ((_ extract 31 0) .cse16))))) (= (concat (select .cse14 .cse10) (select .cse14 .cse5)) .cse9))))) (= (_ bv1 32) ULTIMATE.start_main_~i~0)))))))) [2019-11-15 23:39:02,876 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 32) no Hoare annotation was computed. [2019-11-15 23:39:02,876 INFO L443 ceAbstractionStarter]: For program point L34-2(lines 34 37) no Hoare annotation was computed. [2019-11-15 23:39:02,877 INFO L439 ceAbstractionStarter]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse3 (select |#memory_int| ULTIMATE.start_main_~a~0.base))) (let ((.cse1 (select .cse3 (bvadd ULTIMATE.start_main_~a~0.offset (_ bv4 32)))) (.cse0 ((_ sign_extend 32) (bvadd ~N~0 (_ bv1 32)))) (.cse2 (select .cse3 ULTIMATE.start_main_~a~0.offset))) (or (and (bvslt (_ bv1 32) ~N~0) (= .cse0 (concat .cse1 .cse2))) (and (= .cse1 ((_ extract 63 32) .cse0)) (= ((_ extract 31 0) .cse0) .cse2) (= (_ bv0 32) ULTIMATE.start_main_~a~0.offset) (not (bvsle ~N~0 (_ bv0 32))) (= (_ bv1 32) ULTIMATE.start_main_~i~0))))) [2019-11-15 23:39:02,877 INFO L443 ceAbstractionStarter]: For program point L34-4(lines 34 37) no Hoare annotation was computed. [2019-11-15 23:39:02,877 INFO L446 ceAbstractionStarter]: At program point L43(lines 16 44) the Hoare annotation is: true [2019-11-15 23:39:02,877 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-15 23:39:02,877 INFO L443 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-11-15 23:39:02,877 INFO L443 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2019-11-15 23:39:02,877 INFO L443 ceAbstractionStarter]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2019-11-15 23:39:02,877 INFO L439 ceAbstractionStarter]: At program point L39-3(lines 39 42) the Hoare annotation is: (let ((.cse7 (select |#memory_int| ULTIMATE.start_main_~a~0.base))) (let ((.cse12 (select .cse7 ULTIMATE.start_main_~a~0.offset)) (.cse11 (select .cse7 (bvadd ULTIMATE.start_main_~a~0.offset (_ bv4 32)))) (.cse10 ((_ sign_extend 32) (bvadd ~N~0 (_ bv1 32))))) (let ((.cse0 (= .cse11 ((_ extract 63 32) .cse10))) (.cse1 (= ((_ extract 31 0) .cse10) .cse12)) (.cse2 (= (_ bv0 32) ULTIMATE.start_main_~a~0.offset)) (.cse3 (not (bvsle ~N~0 (_ bv0 32)))) (.cse5 (bvslt (_ bv1 32) ~N~0)) (.cse6 (= .cse10 (concat .cse11 .cse12))) (.cse4 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (_ bv1 32) ULTIMATE.start_main_~i~0)) (and .cse0 .cse1 .cse2 (= (_ bv0 32) ULTIMATE.start_main_~i~0) .cse3) (and (bvslt ULTIMATE.start_main_~i~0 ~N~0) .cse5 .cse6 (= (let ((.cse8 (bvmul ULTIMATE.start_main_~i~0 (_ bv8 32)))) (concat (select .cse7 (bvadd ULTIMATE.start_main_~a~0.offset .cse8 (_ bv4 32))) (select .cse7 (bvadd ULTIMATE.start_main_~a~0.offset .cse8)))) ((_ sign_extend 32) (bvadd ~N~0 (let ((.cse9 (bvadd ULTIMATE.start_main_~i~0 (_ bv1 32)))) (bvmul .cse9 .cse9)))))) (and (and .cse5 .cse6) .cse4))))) [2019-11-15 23:39:02,878 INFO L443 ceAbstractionStarter]: For program point L39-4(lines 39 42) no Hoare annotation was computed. [2019-11-15 23:39:02,880 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (concat (_ BitVec 32) (_ BitVec 32) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:555) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:255) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:212) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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) [2019-11-15 23:39:02,884 INFO L168 Benchmark]: Toolchain (without parser) took 115138.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.9 MB). Free memory was 951.0 MB in the beginning and 901.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 263.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:02,885 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:02,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.08 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:02,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:02,886 INFO L168 Benchmark]: Boogie Preprocessor took 33.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:02,887 INFO L168 Benchmark]: RCFGBuilder took 394.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:02,887 INFO L168 Benchmark]: TraceAbstraction took 114290.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.3 MB). Free memory was 1.1 GB in the beginning and 901.2 MB in the end (delta: 232.3 MB). Peak memory consumption was 282.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:02,890 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.08 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 124.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 940.3 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 394.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 114290.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 50.3 MB). Free memory was 1.1 GB in the beginning and 901.2 MB in the end (delta: 232.3 MB). Peak memory consumption was 282.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (concat (_ BitVec 32) (_ BitVec 32) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (concat (_ BitVec 32) (_ BitVec 32) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...