./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.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/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e1b4e42babcfba0789bfa7cb90840c832d315a4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e1b4e42babcfba0789bfa7cb90840c832d315a4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:37,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:37,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:37,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:37,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:37,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:37,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:37,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:37,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:37,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:37,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:37,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:37,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:37,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:37,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:37,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:37,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:37,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:37,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:37,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:37,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:37,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:37,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:37,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:37,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:37,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:37,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:37,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:37,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:37,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:37,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:37,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:37,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:37,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:37,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:37,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:37,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:37,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:37,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:37,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:37,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:37,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:37,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:37,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:37,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:37,371 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:37,371 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:37,372 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:37,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:37,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:37,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:37,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:37,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:37,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:37,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:37,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:37,374 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:37,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:37,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:37,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:37,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:37,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:37,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:37,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:37,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:37,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:37,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:37,376 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:37,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:37,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:37,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:37,377 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1b4e42babcfba0789bfa7cb90840c832d315a4 [2019-10-22 11:23:37,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:37,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:37,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:37,432 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:37,432 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:37,433 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-10-22 11:23:37,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/5f65d79e2/18b4c74031024d489745b01f8ff2d4a9/FLAGddec3bcbb [2019-10-22 11:23:37,856 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:37,861 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-10-22 11:23:37,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/5f65d79e2/18b4c74031024d489745b01f8ff2d4a9/FLAGddec3bcbb [2019-10-22 11:23:38,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/5f65d79e2/18b4c74031024d489745b01f8ff2d4a9 [2019-10-22 11:23:38,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:38,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:38,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:38,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:38,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:38,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60953abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38, skipping insertion in model container [2019-10-22 11:23:38,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,281 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:38,303 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:38,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:38,569 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:38,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:38,616 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:38,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38 WrapperNode [2019-10-22 11:23:38,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:38,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:38,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:38,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:38,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:38,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:38,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:38,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:38,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... [2019-10-22 11:23:38,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:38,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:38,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:38,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:38,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:38,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:39,167 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:39,167 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-10-22 11:23:39,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:39 BoogieIcfgContainer [2019-10-22 11:23:39,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:39,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:39,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:39,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:39,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:38" (1/3) ... [2019-10-22 11:23:39,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1e48a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:39, skipping insertion in model container [2019-10-22 11:23:39,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:38" (2/3) ... [2019-10-22 11:23:39,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1e48a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:39, skipping insertion in model container [2019-10-22 11:23:39,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:39" (3/3) ... [2019-10-22 11:23:39,175 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-10-22 11:23:39,182 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:39,186 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:39,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:39,213 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:39,213 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:39,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:39,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:39,213 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:39,214 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:39,214 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:39,214 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2019-10-22 11:23:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:23:39,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:39,234 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:39,236 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:39,239 INFO L82 PathProgramCache]: Analyzing trace with hash -991589482, now seen corresponding path program 1 times [2019-10-22 11:23:39,245 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:39,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856083007] [2019-10-22 11:23:39,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:39,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856083007] [2019-10-22 11:23:39,389 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:39,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:39,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249439080] [2019-10-22 11:23:39,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:39,394 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:39,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:39,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:39,406 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2019-10-22 11:23:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:39,451 INFO L93 Difference]: Finished difference Result 149 states and 250 transitions. [2019-10-22 11:23:39,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:39,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:23:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:39,462 INFO L225 Difference]: With dead ends: 149 [2019-10-22 11:23:39,463 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 11:23:39,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 11:23:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-10-22 11:23:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 11:23:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 100 transitions. [2019-10-22 11:23:39,496 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 100 transitions. Word has length 24 [2019-10-22 11:23:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:39,497 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 100 transitions. [2019-10-22 11:23:39,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 100 transitions. [2019-10-22 11:23:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:23:39,498 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:39,498 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:39,498 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:39,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1791855548, now seen corresponding path program 1 times [2019-10-22 11:23:39,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:39,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340023887] [2019-10-22 11:23:39,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:39,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340023887] [2019-10-22 11:23:39,566 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:39,566 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:39,567 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67281172] [2019-10-22 11:23:39,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:39,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:39,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:39,569 INFO L87 Difference]: Start difference. First operand 67 states and 100 transitions. Second operand 4 states. [2019-10-22 11:23:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:39,619 INFO L93 Difference]: Finished difference Result 87 states and 128 transitions. [2019-10-22 11:23:39,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:39,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-22 11:23:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:39,623 INFO L225 Difference]: With dead ends: 87 [2019-10-22 11:23:39,623 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 11:23:39,624 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 11:23:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-10-22 11:23:39,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 11:23:39,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 99 transitions. [2019-10-22 11:23:39,633 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 99 transitions. Word has length 26 [2019-10-22 11:23:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:39,634 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 99 transitions. [2019-10-22 11:23:39,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 99 transitions. [2019-10-22 11:23:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:23:39,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:39,635 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:39,635 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:39,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2050020986, now seen corresponding path program 1 times [2019-10-22 11:23:39,635 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:39,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057428673] [2019-10-22 11:23:39,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,636 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:39,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057428673] [2019-10-22 11:23:39,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:39,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:39,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383298724] [2019-10-22 11:23:39,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:39,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:39,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:39,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:39,727 INFO L87 Difference]: Start difference. First operand 67 states and 99 transitions. Second operand 3 states. [2019-10-22 11:23:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:39,811 INFO L93 Difference]: Finished difference Result 121 states and 176 transitions. [2019-10-22 11:23:39,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:39,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-22 11:23:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:39,813 INFO L225 Difference]: With dead ends: 121 [2019-10-22 11:23:39,813 INFO L226 Difference]: Without dead ends: 75 [2019-10-22 11:23:39,813 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-22 11:23:39,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2019-10-22 11:23:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 11:23:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2019-10-22 11:23:39,819 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 26 [2019-10-22 11:23:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:39,820 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2019-10-22 11:23:39,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2019-10-22 11:23:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:23:39,821 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:39,821 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:39,821 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:39,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1329816874, now seen corresponding path program 1 times [2019-10-22 11:23:39,822 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:39,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130816500] [2019-10-22 11:23:39,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:39,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130816500] [2019-10-22 11:23:39,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:39,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:39,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030939161] [2019-10-22 11:23:39,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:39,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:39,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:39,874 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand 4 states. [2019-10-22 11:23:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:39,981 INFO L93 Difference]: Finished difference Result 155 states and 220 transitions. [2019-10-22 11:23:39,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:39,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-10-22 11:23:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:39,982 INFO L225 Difference]: With dead ends: 155 [2019-10-22 11:23:39,982 INFO L226 Difference]: Without dead ends: 90 [2019-10-22 11:23:39,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-10-22 11:23:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2019-10-22 11:23:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-22 11:23:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 86 transitions. [2019-10-22 11:23:39,988 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 86 transitions. Word has length 29 [2019-10-22 11:23:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:39,989 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 86 transitions. [2019-10-22 11:23:39,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:39,989 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 86 transitions. [2019-10-22 11:23:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:23:39,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:39,990 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:39,990 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1760271131, now seen corresponding path program 1 times [2019-10-22 11:23:39,990 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:39,990 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237933977] [2019-10-22 11:23:39,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:39,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:40,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237933977] [2019-10-22 11:23:40,041 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:40,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:40,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187296766] [2019-10-22 11:23:40,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:40,042 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:40,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:40,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:40,043 INFO L87 Difference]: Start difference. First operand 61 states and 86 transitions. Second operand 3 states. [2019-10-22 11:23:40,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:40,094 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2019-10-22 11:23:40,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:40,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-10-22 11:23:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:40,095 INFO L225 Difference]: With dead ends: 108 [2019-10-22 11:23:40,095 INFO L226 Difference]: Without dead ends: 58 [2019-10-22 11:23:40,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-22 11:23:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-10-22 11:23:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 11:23:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2019-10-22 11:23:40,100 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 30 [2019-10-22 11:23:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:40,100 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2019-10-22 11:23:40,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2019-10-22 11:23:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:23:40,101 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:40,101 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:40,102 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:40,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash -171839511, now seen corresponding path program 1 times [2019-10-22 11:23:40,102 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:40,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132988341] [2019-10-22 11:23:40,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:40,103 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:40,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:40,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132988341] [2019-10-22 11:23:40,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:40,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:40,189 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850867458] [2019-10-22 11:23:40,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:40,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:40,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:40,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:40,190 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand 4 states. [2019-10-22 11:23:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:40,266 INFO L93 Difference]: Finished difference Result 110 states and 154 transitions. [2019-10-22 11:23:40,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:40,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-22 11:23:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:40,267 INFO L225 Difference]: With dead ends: 110 [2019-10-22 11:23:40,267 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 11:23:40,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 11:23:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-10-22 11:23:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-22 11:23:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2019-10-22 11:23:40,281 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 31 [2019-10-22 11:23:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:40,282 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2019-10-22 11:23:40,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2019-10-22 11:23:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 11:23:40,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:40,283 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:40,283 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:40,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2115361752, now seen corresponding path program 1 times [2019-10-22 11:23:40,283 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:40,283 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810970057] [2019-10-22 11:23:40,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:40,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:40,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:40,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810970057] [2019-10-22 11:23:40,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535916189] [2019-10-22 11:23:40,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/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 [2019-10-22 11:23:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:40,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:23:40,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:40,445 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:40,479 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [116118440] [2019-10-22 11:23:40,485 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 33 [2019-10-22 11:23:40,525 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:23:40,525 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:23:40,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:40,803 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) 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) [2019-10-22 11:23:40,806 INFO L168 Benchmark]: Toolchain (without parser) took 2538.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 948.7 MB in the beginning and 958.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 145.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:40,807 INFO L168 Benchmark]: CDTParser took 0.14 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. [2019-10-22 11:23:40,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:40,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.69 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. [2019-10-22 11:23:40,808 INFO L168 Benchmark]: Boogie Preprocessor took 53.15 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:40,809 INFO L168 Benchmark]: RCFGBuilder took 459.05 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:40,809 INFO L168 Benchmark]: TraceAbstraction took 1635.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.5 MB in the end (delta: 145.4 MB). Peak memory consumption was 145.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:40,811 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 347.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.69 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 53.15 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 459.05 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1635.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.5 MB in the end (delta: 145.4 MB). Peak memory consumption was 145.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:42,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:42,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:42,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:42,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:42,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:42,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:42,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:42,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:42,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:42,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:42,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:42,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:42,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:42,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:42,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:42,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:42,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:42,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:42,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:42,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:42,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:42,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:42,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:42,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:42,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:42,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:42,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:42,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:42,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:42,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:42,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:42,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:42,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:42,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:42,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:42,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:42,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:42,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:42,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:42,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:42,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:42,803 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:42,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:42,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:42,814 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:42,814 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:42,814 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:42,814 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:42,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:42,815 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:42,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:42,815 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:42,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:42,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:42,816 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:42,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:42,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:42,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:42,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:42,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:42,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:42,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:42,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:42,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:42,819 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:42,819 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:42,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:42,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:42,820 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/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1b4e42babcfba0789bfa7cb90840c832d315a4 [2019-10-22 11:23:42,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:42,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:42,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:42,877 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:42,877 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:42,878 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-10-22 11:23:42,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/e5b0496b0/3fffd1b15a474c9c9666c65ced2e3092/FLAGd1a3b0072 [2019-10-22 11:23:43,299 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:43,300 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2019-10-22 11:23:43,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/e5b0496b0/3fffd1b15a474c9c9666c65ced2e3092/FLAGd1a3b0072 [2019-10-22 11:23:43,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/data/e5b0496b0/3fffd1b15a474c9c9666c65ced2e3092 [2019-10-22 11:23:43,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:43,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:43,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:43,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:43,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:43,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263ed1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43, skipping insertion in model container [2019-10-22 11:23:43,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,331 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:43,357 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:43,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:43,587 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:43,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:43,703 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:43,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43 WrapperNode [2019-10-22 11:23:43,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:43,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:43,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:43,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:43,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:43,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:43,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:43,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:43,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:43,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:43,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:43,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:43,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:43,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:43,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:44,246 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:44,246 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-10-22 11:23:44,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:44 BoogieIcfgContainer [2019-10-22 11:23:44,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:44,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:44,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:44,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:43" (1/3) ... [2019-10-22 11:23:44,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b00e7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:44, skipping insertion in model container [2019-10-22 11:23:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (2/3) ... [2019-10-22 11:23:44,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b00e7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:44, skipping insertion in model container [2019-10-22 11:23:44,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:44" (3/3) ... [2019-10-22 11:23:44,254 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2019-10-22 11:23:44,261 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:44,267 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:44,273 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:44,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:44,291 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:44,291 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:44,291 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:44,291 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:44,291 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:44,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:44,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2019-10-22 11:23:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:23:44,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:44,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:44,313 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:44,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash -991589482, now seen corresponding path program 1 times [2019-10-22 11:23:44,325 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:44,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1187397511] [2019-10-22 11:23:44,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:44,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:23:44,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:44,441 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:44,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1187397511] [2019-10-22 11:23:44,472 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:44,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:23:44,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130120029] [2019-10-22 11:23:44,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:44,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:44,491 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2019-10-22 11:23:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:44,684 INFO L93 Difference]: Finished difference Result 186 states and 313 transitions. [2019-10-22 11:23:44,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:44,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-22 11:23:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:44,702 INFO L225 Difference]: With dead ends: 186 [2019-10-22 11:23:44,704 INFO L226 Difference]: Without dead ends: 116 [2019-10-22 11:23:44,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-22 11:23:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 64. [2019-10-22 11:23:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 11:23:44,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2019-10-22 11:23:44,750 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 24 [2019-10-22 11:23:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:44,750 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2019-10-22 11:23:44,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2019-10-22 11:23:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:23:44,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:44,752 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:44,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:44,954 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:44,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1314126266, now seen corresponding path program 1 times [2019-10-22 11:23:44,955 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:44,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1775312298] [2019-10-22 11:23:44,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:45,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:45,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:45,032 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:45,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1775312298] [2019-10-22 11:23:45,043 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:45,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:23:45,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601534684] [2019-10-22 11:23:45,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:45,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:45,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:45,045 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2019-10-22 11:23:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:45,062 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions. [2019-10-22 11:23:45,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:45,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-22 11:23:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:45,064 INFO L225 Difference]: With dead ends: 83 [2019-10-22 11:23:45,064 INFO L226 Difference]: Without dead ends: 64 [2019-10-22 11:23:45,065 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-22 11:23:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-10-22 11:23:45,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 11:23:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2019-10-22 11:23:45,072 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 27 [2019-10-22 11:23:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:45,072 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2019-10-22 11:23:45,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2019-10-22 11:23:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:23:45,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:45,074 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:45,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:45,275 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:45,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1071651436, now seen corresponding path program 1 times [2019-10-22 11:23:45,276 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:45,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1423219983] [2019-10-22 11:23:45,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:45,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:45,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:45,355 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:45,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1423219983] [2019-10-22 11:23:45,372 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:45,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:23:45,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753722796] [2019-10-22 11:23:45,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:45,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:45,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:45,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:45,378 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand 6 states. [2019-10-22 11:23:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:45,403 INFO L93 Difference]: Finished difference Result 84 states and 121 transitions. [2019-10-22 11:23:45,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:45,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-10-22 11:23:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:45,405 INFO L225 Difference]: With dead ends: 84 [2019-10-22 11:23:45,405 INFO L226 Difference]: Without dead ends: 64 [2019-10-22 11:23:45,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-22 11:23:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-10-22 11:23:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 11:23:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2019-10-22 11:23:45,411 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 29 [2019-10-22 11:23:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:45,412 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2019-10-22 11:23:45,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2019-10-22 11:23:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:23:45,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:45,413 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:45,614 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:45,614 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:45,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1329816874, now seen corresponding path program 1 times [2019-10-22 11:23:45,615 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:45,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1952965287] [2019-10-22 11:23:45,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:45,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:23:45,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:45,705 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:45,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1952965287] [2019-10-22 11:23:45,725 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:45,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:23:45,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429899385] [2019-10-22 11:23:45,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:45,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:45,726 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand 5 states. [2019-10-22 11:23:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:45,904 INFO L93 Difference]: Finished difference Result 178 states and 243 transitions. [2019-10-22 11:23:45,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:23:45,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 11:23:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:45,906 INFO L225 Difference]: With dead ends: 178 [2019-10-22 11:23:45,907 INFO L226 Difference]: Without dead ends: 174 [2019-10-22 11:23:45,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-22 11:23:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 112. [2019-10-22 11:23:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-10-22 11:23:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 161 transitions. [2019-10-22 11:23:45,938 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 161 transitions. Word has length 29 [2019-10-22 11:23:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:45,939 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 161 transitions. [2019-10-22 11:23:45,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 161 transitions. [2019-10-22 11:23:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:23:45,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:45,940 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:46,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,141 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1894664348, now seen corresponding path program 1 times [2019-10-22 11:23:46,141 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,142 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [250068495] [2019-10-22 11:23:46,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:46,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:23:46,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:46,220 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:46,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [250068495] [2019-10-22 11:23:46,231 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:46,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:23:46,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217456080] [2019-10-22 11:23:46,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:46,232 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:46,233 INFO L87 Difference]: Start difference. First operand 112 states and 161 transitions. Second operand 5 states. [2019-10-22 11:23:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:46,286 INFO L93 Difference]: Finished difference Result 131 states and 180 transitions. [2019-10-22 11:23:46,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:46,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:23:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:46,288 INFO L225 Difference]: With dead ends: 131 [2019-10-22 11:23:46,289 INFO L226 Difference]: Without dead ends: 126 [2019-10-22 11:23:46,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-22 11:23:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2019-10-22 11:23:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-22 11:23:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 171 transitions. [2019-10-22 11:23:46,309 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 171 transitions. Word has length 31 [2019-10-22 11:23:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:46,309 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 171 transitions. [2019-10-22 11:23:46,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 171 transitions. [2019-10-22 11:23:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:23:46,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:46,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:46,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,511 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1892817306, now seen corresponding path program 1 times [2019-10-22 11:23:46,512 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [436456509] [2019-10-22 11:23:46,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:46,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:23:46,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:46,599 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:46,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [436456509] [2019-10-22 11:23:46,611 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:46,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:23:46,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382738682] [2019-10-22 11:23:46,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:46,611 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:46,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:46,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:46,612 INFO L87 Difference]: Start difference. First operand 121 states and 171 transitions. Second operand 4 states. [2019-10-22 11:23:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:46,698 INFO L93 Difference]: Finished difference Result 319 states and 440 transitions. [2019-10-22 11:23:46,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:46,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-22 11:23:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:46,700 INFO L225 Difference]: With dead ends: 319 [2019-10-22 11:23:46,700 INFO L226 Difference]: Without dead ends: 208 [2019-10-22 11:23:46,701 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:46,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2019-10-22 11:23:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 139. [2019-10-22 11:23:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 11:23:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2019-10-22 11:23:46,726 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 31 [2019-10-22 11:23:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:46,726 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2019-10-22 11:23:46,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2019-10-22 11:23:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:23:46,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:46,728 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:46,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,930 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1875591835, now seen corresponding path program 1 times [2019-10-22 11:23:46,931 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [511553810] [2019-10-22 11:23:46,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [511553810] [2019-10-22 11:23:47,063 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:47,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:23:47,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352943297] [2019-10-22 11:23:47,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:47,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:47,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:47,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:47,064 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 6 states. [2019-10-22 11:23:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:47,250 INFO L93 Difference]: Finished difference Result 377 states and 512 transitions. [2019-10-22 11:23:47,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:47,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-10-22 11:23:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:47,253 INFO L225 Difference]: With dead ends: 377 [2019-10-22 11:23:47,253 INFO L226 Difference]: Without dead ends: 261 [2019-10-22 11:23:47,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-22 11:23:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 141. [2019-10-22 11:23:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-22 11:23:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2019-10-22 11:23:47,276 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 33 [2019-10-22 11:23:47,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:47,276 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2019-10-22 11:23:47,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2019-10-22 11:23:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:23:47,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:47,277 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:47,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:47,479 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash 577752486, now seen corresponding path program 1 times [2019-10-22 11:23:47,479 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:47,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [647002584] [2019-10-22 11:23:47,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,577 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:47,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [647002584] [2019-10-22 11:23:47,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714218036] [2019-10-22 11:23:47,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/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 [2019-10-22 11:23:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:47,758 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:47,786 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-10-22 11:23:47,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5, 5] total 13 [2019-10-22 11:23:47,786 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019922146] [2019-10-22 11:23:47,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:23:47,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:47,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:23:47,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:23:47,787 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand 7 states. [2019-10-22 11:23:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:47,877 INFO L93 Difference]: Finished difference Result 146 states and 194 transitions. [2019-10-22 11:23:47,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:47,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-10-22 11:23:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:47,879 INFO L225 Difference]: With dead ends: 146 [2019-10-22 11:23:47,879 INFO L226 Difference]: Without dead ends: 136 [2019-10-22 11:23:47,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:23:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-10-22 11:23:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-10-22 11:23:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-22 11:23:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 181 transitions. [2019-10-22 11:23:47,885 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 181 transitions. Word has length 37 [2019-10-22 11:23:47,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:47,886 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 181 transitions. [2019-10-22 11:23:47,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:23:47,886 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 181 transitions. [2019-10-22 11:23:47,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:23:47,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:47,887 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:48,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:48,288 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash 342931071, now seen corresponding path program 1 times [2019-10-22 11:23:48,288 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:48,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1755128784] [2019-10-22 11:23:48,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:48,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:23:48,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:48,349 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:48,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1755128784] [2019-10-22 11:23:48,352 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:48,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-10-22 11:23:48,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027986036] [2019-10-22 11:23:48,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:48,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:48,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:48,353 INFO L87 Difference]: Start difference. First operand 136 states and 181 transitions. Second operand 6 states. [2019-10-22 11:23:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:48,459 INFO L93 Difference]: Finished difference Result 208 states and 264 transitions. [2019-10-22 11:23:48,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:23:48,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-22 11:23:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:48,460 INFO L225 Difference]: With dead ends: 208 [2019-10-22 11:23:48,460 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 11:23:48,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:23:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 11:23:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2019-10-22 11:23:48,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 11:23:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 187 transitions. [2019-10-22 11:23:48,467 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 187 transitions. Word has length 38 [2019-10-22 11:23:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:48,468 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 187 transitions. [2019-10-22 11:23:48,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 187 transitions. [2019-10-22 11:23:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-22 11:23:48,468 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:48,469 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:48,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:48,670 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash -984416080, now seen corresponding path program 1 times [2019-10-22 11:23:48,670 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:48,670 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [374503093] [2019-10-22 11:23:48,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:48,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:23:48,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:48,755 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:48,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374503093] [2019-10-22 11:23:48,820 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:48,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2019-10-22 11:23:48,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115120301] [2019-10-22 11:23:48,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 11:23:48,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:48,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 11:23:48,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:23:48,821 INFO L87 Difference]: Start difference. First operand 144 states and 187 transitions. Second operand 14 states. [2019-10-22 11:23:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:49,020 INFO L93 Difference]: Finished difference Result 196 states and 240 transitions. [2019-10-22 11:23:49,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:23:49,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2019-10-22 11:23:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:49,021 INFO L225 Difference]: With dead ends: 196 [2019-10-22 11:23:49,021 INFO L226 Difference]: Without dead ends: 172 [2019-10-22 11:23:49,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2019-10-22 11:23:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-22 11:23:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2019-10-22 11:23:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-22 11:23:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 186 transitions. [2019-10-22 11:23:49,028 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 186 transitions. Word has length 42 [2019-10-22 11:23:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:49,028 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 186 transitions. [2019-10-22 11:23:49,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 11:23:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2019-10-22 11:23:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-22 11:23:49,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:49,030 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:49,230 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:49,230 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1721038836, now seen corresponding path program 1 times [2019-10-22 11:23:49,231 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:49,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [83223704] [2019-10-22 11:23:49,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:49,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:23:49,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:49,325 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:23:49,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [83223704] [2019-10-22 11:23:49,348 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:49,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-10-22 11:23:49,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085866500] [2019-10-22 11:23:49,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:23:49,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:49,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:23:49,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:23:49,350 INFO L87 Difference]: Start difference. First operand 144 states and 186 transitions. Second operand 7 states. [2019-10-22 11:23:49,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:49,538 INFO L93 Difference]: Finished difference Result 171 states and 211 transitions. [2019-10-22 11:23:49,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:23:49,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2019-10-22 11:23:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:49,539 INFO L225 Difference]: With dead ends: 171 [2019-10-22 11:23:49,539 INFO L226 Difference]: Without dead ends: 91 [2019-10-22 11:23:49,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:23:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-22 11:23:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 77. [2019-10-22 11:23:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-10-22 11:23:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2019-10-22 11:23:49,542 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 42 [2019-10-22 11:23:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:49,542 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2019-10-22 11:23:49,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:23:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2019-10-22 11:23:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 11:23:49,543 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:49,543 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:49,743 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:49,744 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:49,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:49,744 INFO L82 PathProgramCache]: Analyzing trace with hash 67548486, now seen corresponding path program 1 times [2019-10-22 11:23:49,744 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:49,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [659551375] [2019-10-22 11:23:49,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:49,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:23:49,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:23:49,808 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:23:49,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [659551375] [2019-10-22 11:23:49,811 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:49,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:23:49,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482854810] [2019-10-22 11:23:49,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:49,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:49,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:49,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:49,813 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand 3 states. [2019-10-22 11:23:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:49,814 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2019-10-22 11:23:49,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:49,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-22 11:23:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:49,814 INFO L225 Difference]: With dead ends: 77 [2019-10-22 11:23:49,814 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:23:49,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:23:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:23:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:23:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:23:49,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-10-22 11:23:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:49,816 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:23:49,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:23:49,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:23:50,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:50,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:23:50,128 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L250(lines 250 254) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L184(lines 184 201) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L250-2(lines 250 254) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L184-2(lines 184 201) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L19(lines 19 24) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 24) no Hoare annotation was computed. [2019-10-22 11:23:50,361 INFO L443 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L69(lines 18 71) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_base2flt_~__retres4~0) (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32))) [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L69-1(lines 18 71) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L69-2(lines 18 71) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L69-3(lines 18 71) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (= (_ bv0 32) ULTIMATE.start_base2flt_~__retres4~0)) [2019-10-22 11:23:50,362 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,362 INFO L443 ceAbstractionStarter]: For program point L185(lines 185 190) no Hoare annotation was computed. [2019-10-22 11:23:50,362 INFO L443 ceAbstractionStarter]: For program point L169(lines 169 174) no Hoare annotation was computed. [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L70(lines 14 72) the Hoare annotation is: (and (= (_ bv0 32) ULTIMATE.start_base2flt_~__retres4~0) (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32)) (= |ULTIMATE.start_base2flt_#res| (_ bv0 32))) [2019-10-22 11:23:50,362 INFO L443 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L70-1(lines 14 72) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L37-1(lines 27 42) the Hoare annotation is: false [2019-10-22 11:23:50,362 INFO L439 ceAbstractionStarter]: At program point L70-2(lines 14 72) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,362 INFO L443 ceAbstractionStarter]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L439 ceAbstractionStarter]: At program point L70-3(lines 14 72) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (and (= (_ bv0 32) ULTIMATE.start_base2flt_~__retres4~0) (= |ULTIMATE.start_base2flt_#res| (_ bv0 32)))) [2019-10-22 11:23:50,363 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 27 42) the Hoare annotation is: (and (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32))) [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L37-4(lines 37 41) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L439 ceAbstractionStarter]: At program point L37-5(lines 27 42) the Hoare annotation is: (and (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32))) [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L37-6(lines 37 41) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L439 ceAbstractionStarter]: At program point L37-7(lines 27 42) the Hoare annotation is: (and (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32))) [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L236(lines 236 240) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L236-2(lines 236 240) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L439 ceAbstractionStarter]: At program point L206(lines 147 208) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 (_ bv0 32)) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) (and (= (_ bv1 32) ULTIMATE.start_main_~sb~0) (= (bvadd ULTIMATE.start_main_~tmp~2 (_ bv4294967295 32)) (_ bv0 32))) (= (bvadd ULTIMATE.start_main_~sb~0 (_ bv1 32)) (_ bv0 32))) [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 65) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L25-1(lines 25 65) no Hoare annotation was computed. [2019-10-22 11:23:50,363 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 65) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L25-3(lines 25 65) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L439 ceAbstractionStarter]: At program point L207(lines 137 209) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 (_ bv0 32)) (= |ULTIMATE.start_mulflt_#res| (_ bv0 32)) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) (and (= (_ bv1 32) ULTIMATE.start_main_~sb~0) (= (bvadd ULTIMATE.start_main_~tmp~2 (_ bv4294967295 32)) (_ bv0 32))) (= (bvadd ULTIMATE.start_main_~sb~0 (_ bv1 32)) (_ bv0 32))) [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L175(lines 175 180) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L193(lines 193 198) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L28(lines 27 42) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 27 42) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 27 42) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point L28-3(lines 27 42) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-10-22 11:23:50,364 INFO L439 ceAbstractionStarter]: At program point L63(lines 25 65) the Hoare annotation is: false [2019-10-22 11:23:50,365 INFO L439 ceAbstractionStarter]: At program point L63-1(lines 25 65) the Hoare annotation is: (and (not (= ULTIMATE.start_base2flt_~m (_ bv0 32))) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) [2019-10-22 11:23:50,365 INFO L439 ceAbstractionStarter]: At program point L63-2(lines 25 65) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,365 INFO L439 ceAbstractionStarter]: At program point L63-3(lines 25 65) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,365 INFO L439 ceAbstractionStarter]: At program point L47-2(lines 47 62) the Hoare annotation is: false [2019-10-22 11:23:50,365 INFO L439 ceAbstractionStarter]: At program point L47-5(lines 47 62) the Hoare annotation is: false [2019-10-22 11:23:50,366 INFO L439 ceAbstractionStarter]: At program point L47-8(lines 47 62) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,366 INFO L439 ceAbstractionStarter]: At program point L47-11(lines 47 62) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2019-10-22 11:23:50,366 INFO L443 ceAbstractionStarter]: For program point L246(lines 246 262) no Hoare annotation was computed. [2019-10-22 11:23:50,366 INFO L446 ceAbstractionStarter]: At program point L246-1(lines 246 262) the Hoare annotation is: true [2019-10-22 11:23:50,366 INFO L443 ceAbstractionStarter]: For program point L48(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,366 INFO L443 ceAbstractionStarter]: For program point L48-1(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,366 INFO L443 ceAbstractionStarter]: For program point L48-2(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L48-3(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L247(lines 247 256) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L247-2(lines 247 256) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L148(lines 148 154) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L148-2(lines 147 208) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L49(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L49-1(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L49-2(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L49-3(lines 47 62) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L446 ceAbstractionStarter]: At program point L264(lines 210 266) the Hoare annotation is: true [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L233(lines 233 242) no Hoare annotation was computed. [2019-10-22 11:23:50,367 INFO L443 ceAbstractionStarter]: For program point L233-2(lines 233 242) no Hoare annotation was computed. [2019-10-22 11:23:50,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:50 BoogieIcfgContainer [2019-10-22 11:23:50,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:50,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:50,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:50,385 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:50,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:44" (3/4) ... [2019-10-22 11:23:50,393 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:23:50,406 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 11:23:50,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-10-22 11:23:50,438 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == __retres4 && ~bvult32(m, 16777216bv32)) && \result == 0bv32 [2019-10-22 11:23:50,440 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: zero == 0bv32 || (0bv32 == __retres4 && \result == 0bv32) [2019-10-22 11:23:50,441 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0bv32 && \result == 0bv32) && zero == 0bv32) || (1bv32 == sb && ~bvadd64(tmp, 4294967295bv32) == 0bv32)) || ~bvadd64(sb, 1bv32) == 0bv32 [2019-10-22 11:23:50,490 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f5966d2b-0141-4fc8-b7da-dbac31a990dc/bin/utaipan/witness.graphml [2019-10-22 11:23:50,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:50,494 INFO L168 Benchmark]: Toolchain (without parser) took 7175.27 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.4 MB). Free memory was 952.3 MB in the beginning and 951.7 MB in the end (delta: 612.1 kB). Peak memory consumption was 225.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,494 INFO L168 Benchmark]: CDTParser took 0.15 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. [2019-10-22 11:23:50,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -205.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.14 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. [2019-10-22 11:23:50,494 INFO L168 Benchmark]: Boogie Preprocessor took 34.19 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. [2019-10-22 11:23:50,495 INFO L168 Benchmark]: RCFGBuilder took 472.76 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,495 INFO L168 Benchmark]: TraceAbstraction took 6135.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 55.6 MB). Free memory was 1.1 GB in the beginning and 958.6 MB in the end (delta: 166.2 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,495 INFO L168 Benchmark]: Witness Printer took 108.22 ms. Allocated memory is still 1.3 GB. Free memory was 958.6 MB in the beginning and 951.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,497 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 384.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 952.3 MB in the beginning and 1.2 GB in the end (delta: -205.4 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.14 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. * Boogie Preprocessor took 34.19 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 472.76 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: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6135.76 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 55.6 MB). Free memory was 1.1 GB in the beginning and 958.6 MB in the end (delta: 166.2 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. * Witness Printer took 108.22 ms. Allocated memory is still 1.3 GB. Free memory was 958.6 MB in the beginning and 951.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((__retres10 == 0bv32 && \result == 0bv32) && zero == 0bv32) || (1bv32 == sb && ~bvadd64(tmp, 4294967295bv32) == 0bv32)) || ~bvadd64(sb, 1bv32) == 0bv32 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0bv32 == __retres4 && ~bvult32(m, 16777216bv32) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (0bv32 == __retres4 && ~bvult32(m, 16777216bv32)) && \result == 0bv32 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 210]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: !(m == 0bv32) && zero == 0bv32 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0bv32 && ~bvult32(m, 16777216bv32) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 246]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0bv32 && ~bvult32(m, 16777216bv32) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: zero == 0bv32 || 0bv32 == __retres4 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0bv32 && ~bvult32(m, 16777216bv32) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: zero == 0bv32 || (0bv32 == __retres4 && \result == 0bv32) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: ((__retres10 == 0bv32 && zero == 0bv32) || (1bv32 == sb && ~bvadd64(tmp, 4294967295bv32) == 0bv32)) || ~bvadd64(sb, 1bv32) == 0bv32 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: zero == 0bv32 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 1 error locations. Result: SAFE, OverallTime: 6.0s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 982 SDtfs, 890 SDslu, 2726 SDs, 0 SdLazy, 700 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 895 GetRequests, 813 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 374 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 65 NumberOfFragments, 141 HoareAnnotationTreeSize, 24 FomulaSimplifications, 6152 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 102 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 868 ConstructedInterpolants, 0 QuantifiedInterpolants, 52585 SizeOfPredicates, 44 NumberOfNonLiveVariables, 908 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 26 InterpolantComputations, 24 PerfectInterpolantSequences, 76/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...