./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.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_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 0e04f2515dd5c7ce697460622800d33932bf1903 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 0e04f2515dd5c7ce697460622800d33932bf1903 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:40,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:24:40,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:24:40,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:24:40,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:24:40,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:24:40,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:24:40,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:24:40,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:24:40,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:24:40,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:24:40,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:24:40,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:24:40,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:24:40,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:24:40,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:24:40,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:24:40,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:24:40,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:24:40,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:24:40,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:24:40,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:24:40,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:24:40,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:24:40,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:24:40,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:24:40,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:24:40,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:24:40,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:24:40,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:24:40,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:40,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:40,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:40,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:40,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:40,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:40,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:40,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:40,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:40,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:40,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:40,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:24:40,413 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:40,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:40,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:40,419 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:40,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:40,419 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:40,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:24:40,419 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:40,420 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:40,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:24:40,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:24:40,420 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:40,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:40,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:40,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:24:40,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:40,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:40,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:40,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:40,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:40,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:40,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:40,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:40,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:40,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:40,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:40,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:40,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:40,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:40,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:40,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:40,424 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:24:40,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:24:40,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:40,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:40,425 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_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-10-22 11:24:40,454 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:40,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:40,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:40,473 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:40,474 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:40,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 11:24:40,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/3dad99abb/43f8eca87e164599a141eb5b310f8c31/FLAGe466f4092 [2019-10-22 11:24:40,966 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:40,968 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 11:24:40,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/3dad99abb/43f8eca87e164599a141eb5b310f8c31/FLAGe466f4092 [2019-10-22 11:24:41,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/3dad99abb/43f8eca87e164599a141eb5b310f8c31 [2019-10-22 11:24:41,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:41,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:41,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:41,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:41,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:41,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b10e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41, skipping insertion in model container [2019-10-22 11:24:41,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,348 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:41,369 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:41,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:41,603 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:41,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:41,654 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:41,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41 WrapperNode [2019-10-22 11:24:41,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:41,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:41,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:41,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:41,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:41,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:41,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:41,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:41,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... [2019-10-22 11:24:41,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:41,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:41,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:41,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:41,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:41,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:41,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:42,226 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:42,226 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-10-22 11:24:42,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:42 BoogieIcfgContainer [2019-10-22 11:24:42,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:42,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:42,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:42,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:42,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:41" (1/3) ... [2019-10-22 11:24:42,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e76f5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:42, skipping insertion in model container [2019-10-22 11:24:42,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:41" (2/3) ... [2019-10-22 11:24:42,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e76f5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:42, skipping insertion in model container [2019-10-22 11:24:42,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:42" (3/3) ... [2019-10-22 11:24:42,233 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-10-22 11:24:42,240 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:42,245 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 11:24:42,252 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 11:24:42,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:42,272 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:42,272 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:42,272 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:42,272 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:42,272 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:42,272 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:42,272 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-22 11:24:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:42,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:42,289 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:42,291 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:42,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:42,295 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-10-22 11:24:42,300 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:42,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404588938] [2019-10-22 11:24:42,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:42,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:42,580 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 11:24:42,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404588938] [2019-10-22 11:24:42,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:42,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:24:42,584 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697107369] [2019-10-22 11:24:42,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:42,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:42,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:42,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:42,606 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 8 states. [2019-10-22 11:24:43,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:43,915 INFO L93 Difference]: Finished difference Result 454 states and 688 transitions. [2019-10-22 11:24:43,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:24:43,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 11:24:43,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:43,934 INFO L225 Difference]: With dead ends: 454 [2019-10-22 11:24:43,935 INFO L226 Difference]: Without dead ends: 337 [2019-10-22 11:24:43,938 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:24:43,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-10-22 11:24:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 133. [2019-10-22 11:24:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-22 11:24:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2019-10-22 11:24:44,008 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 17 [2019-10-22 11:24:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:44,008 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2019-10-22 11:24:44,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2019-10-22 11:24:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:44,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:44,010 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:44,011 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash 934676335, now seen corresponding path program 1 times [2019-10-22 11:24:44,011 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:44,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646624506] [2019-10-22 11:24:44,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:44,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:44,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:44,186 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 11:24:44,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646624506] [2019-10-22 11:24:44,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:44,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:24:44,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382564538] [2019-10-22 11:24:44,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:24:44,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:24:44,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:44,189 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 7 states. [2019-10-22 11:24:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:44,436 INFO L93 Difference]: Finished difference Result 288 states and 410 transitions. [2019-10-22 11:24:44,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:24:44,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 11:24:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:44,440 INFO L225 Difference]: With dead ends: 288 [2019-10-22 11:24:44,440 INFO L226 Difference]: Without dead ends: 204 [2019-10-22 11:24:44,441 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:24:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-22 11:24:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2019-10-22 11:24:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-22 11:24:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 274 transitions. [2019-10-22 11:24:44,469 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 274 transitions. Word has length 17 [2019-10-22 11:24:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:44,474 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 274 transitions. [2019-10-22 11:24:44,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:24:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 274 transitions. [2019-10-22 11:24:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 11:24:44,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:44,476 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] [2019-10-22 11:24:44,476 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:44,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1341099622, now seen corresponding path program 1 times [2019-10-22 11:24:44,477 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:44,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392944765] [2019-10-22 11:24:44,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:44,478 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:44,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:44,704 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 11:24:44,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392944765] [2019-10-22 11:24:44,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:44,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:24:44,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69045133] [2019-10-22 11:24:44,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:44,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:44,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:44,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:44,706 INFO L87 Difference]: Start difference. First operand 193 states and 274 transitions. Second operand 8 states. [2019-10-22 11:24:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,052 INFO L93 Difference]: Finished difference Result 304 states and 404 transitions. [2019-10-22 11:24:45,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:24:45,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-22 11:24:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,054 INFO L225 Difference]: With dead ends: 304 [2019-10-22 11:24:45,054 INFO L226 Difference]: Without dead ends: 256 [2019-10-22 11:24:45,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:24:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2019-10-22 11:24:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 182. [2019-10-22 11:24:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 11:24:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 256 transitions. [2019-10-22 11:24:45,071 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 256 transitions. Word has length 21 [2019-10-22 11:24:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,072 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 256 transitions. [2019-10-22 11:24:45,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 256 transitions. [2019-10-22 11:24:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:45,073 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,073 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] [2019-10-22 11:24:45,074 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1901024439, now seen corresponding path program 1 times [2019-10-22 11:24:45,074 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857024351] [2019-10-22 11:24:45,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,075 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,103 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 11:24:45,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857024351] [2019-10-22 11:24:45,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:24:45,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212046551] [2019-10-22 11:24:45,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:24:45,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:24:45,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:24:45,117 INFO L87 Difference]: Start difference. First operand 182 states and 256 transitions. Second operand 3 states. [2019-10-22 11:24:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,143 INFO L93 Difference]: Finished difference Result 336 states and 472 transitions. [2019-10-22 11:24:45,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:24:45,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 11:24:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,145 INFO L225 Difference]: With dead ends: 336 [2019-10-22 11:24:45,145 INFO L226 Difference]: Without dead ends: 261 [2019-10-22 11:24:45,146 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 11:24:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-22 11:24:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 232. [2019-10-22 11:24:45,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-10-22 11:24:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2019-10-22 11:24:45,176 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 25 [2019-10-22 11:24:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,177 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2019-10-22 11:24:45,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:24:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2019-10-22 11:24:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:45,178 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,178 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] [2019-10-22 11:24:45,178 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:45,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,179 INFO L82 PathProgramCache]: Analyzing trace with hash 186737553, now seen corresponding path program 1 times [2019-10-22 11:24:45,179 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,179 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814948321] [2019-10-22 11:24:45,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,258 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 11:24:45,258 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814948321] [2019-10-22 11:24:45,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:45,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981157128] [2019-10-22 11:24:45,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:45,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:45,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:45,260 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand 6 states. [2019-10-22 11:24:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,394 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2019-10-22 11:24:45,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:24:45,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-22 11:24:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,395 INFO L225 Difference]: With dead ends: 358 [2019-10-22 11:24:45,396 INFO L226 Difference]: Without dead ends: 193 [2019-10-22 11:24:45,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-22 11:24:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2019-10-22 11:24:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 11:24:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 248 transitions. [2019-10-22 11:24:45,409 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 248 transitions. Word has length 25 [2019-10-22 11:24:45,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,409 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 248 transitions. [2019-10-22 11:24:45,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 248 transitions. [2019-10-22 11:24:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:24:45,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,413 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 11:24:45,413 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,413 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-10-22 11:24:45,413 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,414 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750465002] [2019-10-22 11:24:45,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:45,466 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 11:24:45,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750465002] [2019-10-22 11:24:45,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:45,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:24:45,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952286687] [2019-10-22 11:24:45,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:45,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:24:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:45,467 INFO L87 Difference]: Start difference. First operand 182 states and 248 transitions. Second operand 5 states. [2019-10-22 11:24:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:45,525 INFO L93 Difference]: Finished difference Result 313 states and 430 transitions. [2019-10-22 11:24:45,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:45,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 11:24:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:45,527 INFO L225 Difference]: With dead ends: 313 [2019-10-22 11:24:45,527 INFO L226 Difference]: Without dead ends: 238 [2019-10-22 11:24:45,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:45,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-10-22 11:24:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 190. [2019-10-22 11:24:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-10-22 11:24:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2019-10-22 11:24:45,540 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 29 [2019-10-22 11:24:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:45,540 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2019-10-22 11:24:45,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2019-10-22 11:24:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:24:45,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:45,541 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 11:24:45,542 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-10-22 11:24:45,550 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:24:45,550 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353046692] [2019-10-22 11:24:45,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,550 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:24:45,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:24:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:45,715 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:24:45,716 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:45,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:45 BoogieIcfgContainer [2019-10-22 11:24:45,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:45,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:45,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:45,748 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:45,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:42" (3/4) ... [2019-10-22 11:24:45,752 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:24:45,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:45,754 INFO L168 Benchmark]: Toolchain (without parser) took 4420.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.2 MB in the beginning and 1.0 GB in the end (delta: -91.8 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,755 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:45,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,758 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:45,758 INFO L168 Benchmark]: RCFGBuilder took 500.56 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: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,760 INFO L168 Benchmark]: TraceAbstraction took 3519.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:45,760 INFO L168 Benchmark]: Witness Printer took 4.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:45,763 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -186.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 500.56 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: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3519.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 2059 SDslu, 2424 SDs, 0 SdLazy, 601 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=4, 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, 6 MinimizatonAttempts, 377 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 12000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:24:47,710 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-10-22 11:24:47,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:24:47,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:24:47,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:24:47,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:24:47,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:24:47,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:24:47,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:24:47,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:24:47,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:24:47,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:24:47,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:24:47,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:24:47,761 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:24:47,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:24:47,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:24:47,762 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:24:47,762 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:24:47,762 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:24:47,762 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:24:47,763 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:24:47,763 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:24:47,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:24:47,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:24:47,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:24:47,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:24:47,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:24:47,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:24:47,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:24:47,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:24:47,765 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:24:47,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:24:47,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:24:47,765 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:24:47,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:24:47,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:24:47,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:24:47,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:24:47,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:24:47,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:24:47,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:24:47,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:24:47,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:24:47,767 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:24:47,767 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:24:47,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:24:47,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:24:47,768 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_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-10-22 11:24:47,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:24:47,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:24:47,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:24:47,817 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:24:47,817 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:24:47,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 11:24:47,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/461c071bb/74522ca13c164968b23c7efa74f2a54e/FLAG9ed839018 [2019-10-22 11:24:48,266 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:24:48,267 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 11:24:48,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/461c071bb/74522ca13c164968b23c7efa74f2a54e/FLAG9ed839018 [2019-10-22 11:24:48,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/data/461c071bb/74522ca13c164968b23c7efa74f2a54e [2019-10-22 11:24:48,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:24:48,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:24:48,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:48,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:24:48,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:24:48,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47970240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:48, skipping insertion in model container [2019-10-22 11:24:48,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:24:48" (1/1) ... [2019-10-22 11:24:48,676 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:24:48,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:24:48,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:48,914 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:24:49,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:24:49,031 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:24:49,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49 WrapperNode [2019-10-22 11:24:49,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:24:49,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:49,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:24:49,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:24:49,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:24:49,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:24:49,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:24:49,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:24:49,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... [2019-10-22 11:24:49,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:24:49,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:24:49,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:24:49,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:24:49,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:24:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:24:49,612 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:24:49,612 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-10-22 11:24:49,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:49 BoogieIcfgContainer [2019-10-22 11:24:49,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:24:49,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:24:49,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:24:49,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:24:49,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:24:48" (1/3) ... [2019-10-22 11:24:49,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a290ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:49, skipping insertion in model container [2019-10-22 11:24:49,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:24:49" (2/3) ... [2019-10-22 11:24:49,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a290ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:24:49, skipping insertion in model container [2019-10-22 11:24:49,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:49" (3/3) ... [2019-10-22 11:24:49,622 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-10-22 11:24:49,632 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:24:49,640 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 11:24:49,651 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 11:24:49,678 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:24:49,678 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:24:49,678 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:24:49,678 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:24:49,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:24:49,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:24:49,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:24:49,679 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:24:49,697 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-22 11:24:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:24:49,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:49,707 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:24:49,709 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-10-22 11:24:49,721 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:49,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1769799533] [2019-10-22 11:24:49,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:49,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:24:49,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:49,909 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 11:24:49,909 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:49,923 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 11:24:49,924 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1769799533] [2019-10-22 11:24:49,924 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:49,925 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-10-22 11:24:49,925 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386819637] [2019-10-22 11:24:49,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:24:49,929 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:49,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:24:49,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:24:49,940 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 7 states. [2019-10-22 11:24:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:50,405 INFO L93 Difference]: Finished difference Result 497 states and 751 transitions. [2019-10-22 11:24:50,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 11:24:50,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 11:24:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:50,419 INFO L225 Difference]: With dead ends: 497 [2019-10-22 11:24:50,420 INFO L226 Difference]: Without dead ends: 379 [2019-10-22 11:24:50,423 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:24:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-10-22 11:24:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 130. [2019-10-22 11:24:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-22 11:24:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2019-10-22 11:24:50,471 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 17 [2019-10-22 11:24:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:50,472 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2019-10-22 11:24:50,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:24:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2019-10-22 11:24:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 11:24:50,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:50,473 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] [2019-10-22 11:24:50,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:50,675 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash 216177638, now seen corresponding path program 1 times [2019-10-22 11:24:50,676 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:50,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [408049008] [2019-10-22 11:24:50,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:50,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:24:50,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:50,759 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 11:24:50,760 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:50,779 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 11:24:50,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408049008] [2019-10-22 11:24:50,780 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:50,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:24:50,781 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042874121] [2019-10-22 11:24:50,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:50,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:50,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:50,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:50,783 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 5 states. [2019-10-22 11:24:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:50,943 INFO L93 Difference]: Finished difference Result 501 states and 705 transitions. [2019-10-22 11:24:50,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:24:50,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-22 11:24:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:50,948 INFO L225 Difference]: With dead ends: 501 [2019-10-22 11:24:50,948 INFO L226 Difference]: Without dead ends: 424 [2019-10-22 11:24:50,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 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 11:24:50,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-10-22 11:24:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 175. [2019-10-22 11:24:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-22 11:24:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 251 transitions. [2019-10-22 11:24:50,968 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 251 transitions. Word has length 21 [2019-10-22 11:24:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:50,969 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 251 transitions. [2019-10-22 11:24:50,969 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 251 transitions. [2019-10-22 11:24:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:50,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:50,970 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] [2019-10-22 11:24:51,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:51,172 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:51,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1163788538, now seen corresponding path program 1 times [2019-10-22 11:24:51,175 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:51,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [753939282] [2019-10-22 11:24:51,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:51,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:24:51,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:51,271 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 11:24:51,272 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:51,285 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 11:24:51,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [753939282] [2019-10-22 11:24:51,286 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:51,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:24:51,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736732697] [2019-10-22 11:24:51,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:24:51,288 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:51,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:24:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:24:51,289 INFO L87 Difference]: Start difference. First operand 175 states and 251 transitions. Second operand 5 states. [2019-10-22 11:24:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:51,421 INFO L93 Difference]: Finished difference Result 347 states and 483 transitions. [2019-10-22 11:24:51,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:24:51,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:24:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:51,423 INFO L225 Difference]: With dead ends: 347 [2019-10-22 11:24:51,423 INFO L226 Difference]: Without dead ends: 274 [2019-10-22 11:24:51,424 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 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 11:24:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-10-22 11:24:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2019-10-22 11:24:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-10-22 11:24:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 366 transitions. [2019-10-22 11:24:51,444 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 366 transitions. Word has length 25 [2019-10-22 11:24:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:51,444 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 366 transitions. [2019-10-22 11:24:51,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:24:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 366 transitions. [2019-10-22 11:24:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:51,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:51,446 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] [2019-10-22 11:24:51,647 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:51,647 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:51,647 INFO L82 PathProgramCache]: Analyzing trace with hash 611218824, now seen corresponding path program 1 times [2019-10-22 11:24:51,648 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:51,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1677248315] [2019-10-22 11:24:51,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:51,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:24:51,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:51,751 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 11:24:51,752 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:51,837 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 11:24:51,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677248315] [2019-10-22 11:24:51,837 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:51,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 11:24:51,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322844922] [2019-10-22 11:24:51,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:24:51,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:51,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:24:51,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:51,839 INFO L87 Difference]: Start difference. First operand 257 states and 366 transitions. Second operand 8 states. [2019-10-22 11:24:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:53,802 INFO L93 Difference]: Finished difference Result 1091 states and 1532 transitions. [2019-10-22 11:24:53,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 11:24:53,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 11:24:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:53,822 INFO L225 Difference]: With dead ends: 1091 [2019-10-22 11:24:53,822 INFO L226 Difference]: Without dead ends: 974 [2019-10-22 11:24:53,824 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-10-22 11:24:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2019-10-22 11:24:53,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 277. [2019-10-22 11:24:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-10-22 11:24:53,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 392 transitions. [2019-10-22 11:24:53,850 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 392 transitions. Word has length 25 [2019-10-22 11:24:53,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:53,851 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 392 transitions. [2019-10-22 11:24:53,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:24:53,851 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 392 transitions. [2019-10-22 11:24:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:24:53,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:53,853 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] [2019-10-22 11:24:54,053 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:54,054 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,054 INFO L82 PathProgramCache]: Analyzing trace with hash 611278406, now seen corresponding path program 1 times [2019-10-22 11:24:54,055 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:54,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1422586527] [2019-10-22 11:24:54,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:54,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:54,147 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 11:24:54,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:54,154 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 11:24:54,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1422586527] [2019-10-22 11:24:54,154 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,154 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-10-22 11:24:54,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121858700] [2019-10-22 11:24:54,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:54,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:54,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:54,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:54,156 INFO L87 Difference]: Start difference. First operand 277 states and 392 transitions. Second operand 6 states. [2019-10-22 11:24:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:54,301 INFO L93 Difference]: Finished difference Result 377 states and 518 transitions. [2019-10-22 11:24:54,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:24:54,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-22 11:24:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:54,303 INFO L225 Difference]: With dead ends: 377 [2019-10-22 11:24:54,303 INFO L226 Difference]: Without dead ends: 310 [2019-10-22 11:24:54,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 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 11:24:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-10-22 11:24:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 257. [2019-10-22 11:24:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-10-22 11:24:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 361 transitions. [2019-10-22 11:24:54,320 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 361 transitions. Word has length 25 [2019-10-22 11:24:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:54,323 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 361 transitions. [2019-10-22 11:24:54,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 361 transitions. [2019-10-22 11:24:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:24:54,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:54,324 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 11:24:54,525 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:54,525 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-10-22 11:24:54,526 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:54,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [532745642] [2019-10-22 11:24:54,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:54,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:24:54,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:54,608 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 11:24:54,608 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:54,642 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 11:24:54,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [532745642] [2019-10-22 11:24:54,643 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:54,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-10-22 11:24:54,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656908211] [2019-10-22 11:24:54,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:24:54,643 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:54,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:24:54,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:54,644 INFO L87 Difference]: Start difference. First operand 257 states and 361 transitions. Second operand 10 states. [2019-10-22 11:24:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,098 INFO L93 Difference]: Finished difference Result 502 states and 693 transitions. [2019-10-22 11:24:55,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:24:55,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-10-22 11:24:55,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,100 INFO L225 Difference]: With dead ends: 502 [2019-10-22 11:24:55,100 INFO L226 Difference]: Without dead ends: 439 [2019-10-22 11:24:55,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:24:55,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-22 11:24:55,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 267. [2019-10-22 11:24:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-10-22 11:24:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 376 transitions. [2019-10-22 11:24:55,115 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 376 transitions. Word has length 29 [2019-10-22 11:24:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,116 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 376 transitions. [2019-10-22 11:24:55,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:24:55,116 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 376 transitions. [2019-10-22 11:24:55,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:24:55,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,117 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 11:24:55,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:55,318 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash -871267815, now seen corresponding path program 1 times [2019-10-22 11:24:55,318 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:55,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2105924262] [2019-10-22 11:24:55,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,399 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 11:24:55,400 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:55,421 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 11:24:55,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2105924262] [2019-10-22 11:24:55,421 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:24:55,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422721428] [2019-10-22 11:24:55,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:55,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:55,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:55,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:55,423 INFO L87 Difference]: Start difference. First operand 267 states and 376 transitions. Second operand 6 states. [2019-10-22 11:24:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:55,484 INFO L93 Difference]: Finished difference Result 514 states and 709 transitions. [2019-10-22 11:24:55,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:55,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-10-22 11:24:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:55,487 INFO L225 Difference]: With dead ends: 514 [2019-10-22 11:24:55,487 INFO L226 Difference]: Without dead ends: 427 [2019-10-22 11:24:55,488 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 11:24:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-22 11:24:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2019-10-22 11:24:55,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-10-22 11:24:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 480 transitions. [2019-10-22 11:24:55,514 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 480 transitions. Word has length 29 [2019-10-22 11:24:55,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:55,515 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 480 transitions. [2019-10-22 11:24:55,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 480 transitions. [2019-10-22 11:24:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:24:55,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:55,516 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 11:24:55,717 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:55,717 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:55,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-10-22 11:24:55,718 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:55,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1486463762] [2019-10-22 11:24:55,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:55,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 11:24:55,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:55,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:24:55,827 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 11:24:55,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:55,849 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 11:24:55,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1486463762] [2019-10-22 11:24:55,850 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:55,850 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:24:55,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223539116] [2019-10-22 11:24:55,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:55,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:55,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:55,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:55,851 INFO L87 Difference]: Start difference. First operand 349 states and 480 transitions. Second operand 6 states. [2019-10-22 11:24:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:56,033 INFO L93 Difference]: Finished difference Result 480 states and 656 transitions. [2019-10-22 11:24:56,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:24:56,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-10-22 11:24:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:56,035 INFO L225 Difference]: With dead ends: 480 [2019-10-22 11:24:56,035 INFO L226 Difference]: Without dead ends: 478 [2019-10-22 11:24:56,036 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:24:56,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-10-22 11:24:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 347. [2019-10-22 11:24:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-10-22 11:24:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 473 transitions. [2019-10-22 11:24:56,065 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 473 transitions. Word has length 29 [2019-10-22 11:24:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:56,065 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 473 transitions. [2019-10-22 11:24:56,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 473 transitions. [2019-10-22 11:24:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:24:56,066 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:56,067 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 11:24:56,267 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:56,267 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:56,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1174763763, now seen corresponding path program 1 times [2019-10-22 11:24:56,268 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:56,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1083461446] [2019-10-22 11:24:56,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:24:56,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:24:56,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:24:56,327 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 11:24:56,327 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:24:56,343 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 11:24:56,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1083461446] [2019-10-22 11:24:56,343 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:24:56,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:24:56,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565685920] [2019-10-22 11:24:56,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:24:56,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:24:56,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:24:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:24:56,344 INFO L87 Difference]: Start difference. First operand 347 states and 473 transitions. Second operand 6 states. [2019-10-22 11:24:56,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:24:56,453 INFO L93 Difference]: Finished difference Result 406 states and 547 transitions. [2019-10-22 11:24:56,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:24:56,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-22 11:24:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:24:56,455 INFO L225 Difference]: With dead ends: 406 [2019-10-22 11:24:56,455 INFO L226 Difference]: Without dead ends: 401 [2019-10-22 11:24:56,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:24:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-10-22 11:24:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 347. [2019-10-22 11:24:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-10-22 11:24:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 470 transitions. [2019-10-22 11:24:56,478 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 470 transitions. Word has length 30 [2019-10-22 11:24:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:24:56,479 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 470 transitions. [2019-10-22 11:24:56,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:24:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 470 transitions. [2019-10-22 11:24:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:24:56,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:24:56,482 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 11:24:56,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:56,682 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:24:56,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:24:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1078465644, now seen corresponding path program 1 times [2019-10-22 11:24:56,683 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:24:56,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2019530673] [2019-10-22 11:24:56,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/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 11:24:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:24:56,857 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:24:56,858 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:24:57,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:24:57,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:24:57 BoogieIcfgContainer [2019-10-22 11:24:57,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:24:57,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:24:57,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:24:57,080 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:24:57,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:24:49" (3/4) ... [2019-10-22 11:24:57,083 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:24:57,149 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_700daa70-55c0-4ef4-b6bc-64e9d352657a/bin/utaipan/witness.graphml [2019-10-22 11:24:57,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:24:57,151 INFO L168 Benchmark]: Toolchain (without parser) took 8493.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 952.3 MB in the beginning and 893.1 MB in the end (delta: 59.2 MB). Peak memory consumption was 253.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,152 INFO L168 Benchmark]: CDTParser took 0.16 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 11:24:57,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.37 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 11:24:57,152 INFO L168 Benchmark]: Boogie Preprocessor took 38.82 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 11:24:57,153 INFO L168 Benchmark]: RCFGBuilder took 498.50 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: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,153 INFO L168 Benchmark]: TraceAbstraction took 7465.60 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 893.1 MB in the end (delta: 183.2 MB). Peak memory consumption was 246.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:24:57,153 INFO L168 Benchmark]: Witness Printer took 69.42 ms. Allocated memory is still 1.2 GB. Free memory is still 893.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:24:57,159 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 372.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -161.7 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.37 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 38.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 498.50 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: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7465.60 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 893.1 MB in the end (delta: 183.2 MB). Peak memory consumption was 246.1 MB. Max. memory is 11.5 GB. * Witness Printer took 69.42 ms. Allocated memory is still 1.2 GB. Free memory is still 893.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 7.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1327 SDtfs, 3512 SDslu, 5147 SDs, 0 SdLazy, 1110 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1700 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 6 QuantifiedInterpolants, 19474 SizeOfPredicates, 46 NumberOfNonLiveVariables, 522 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...