./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6812207659d67444abdc9d105ff32acac8458b5 ................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6812207659d67444abdc9d105ff32acac8458b5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:35:34,368 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:35:34,369 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:35:34,375 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:35:34,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:35:34,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:35:34,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:35:34,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:35:34,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:35:34,379 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:35:34,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:35:34,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:35:34,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:35:34,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:35:34,381 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:35:34,382 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:35:34,382 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:35:34,383 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:35:34,384 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:35:34,385 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:35:34,385 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:35:34,386 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:35:34,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:35:34,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:35:34,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:35:34,388 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:35:34,388 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:35:34,389 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:35:34,389 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:35:34,390 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:35:34,390 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:35:34,391 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:35:34,391 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:35:34,391 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:35:34,391 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:35:34,392 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:35:34,392 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 00:35:34,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:35:34,400 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:35:34,401 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:35:34,401 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:35:34,401 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 00:35:34,401 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 00:35:34,402 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 00:35:34,403 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:35:34,403 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:35:34,403 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 00:35:34,403 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:35:34,403 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:35:34,403 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:35:34,404 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:35:34,404 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:35:34,405 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:35:34,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:35:34,405 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:35:34,405 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:35:34,405 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:35:34,405 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 00:35:34,405 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:35:34,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 00:35:34,406 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 00:35:34,406 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6812207659d67444abdc9d105ff32acac8458b5 [2018-12-09 00:35:34,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:35:34,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:35:34,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:35:34,436 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:35:34,436 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:35:34,436 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c [2018-12-09 00:35:34,475 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/80d2483b8/b1f3903a8b1548249fa25b092c696959/FLAGe827ff900 [2018-12-09 00:35:34,933 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:35:34,933 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c [2018-12-09 00:35:34,938 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/80d2483b8/b1f3903a8b1548249fa25b092c696959/FLAGe827ff900 [2018-12-09 00:35:34,946 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/80d2483b8/b1f3903a8b1548249fa25b092c696959 [2018-12-09 00:35:34,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:35:34,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:35:34,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:35:34,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:35:34,952 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:35:34,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:35:34" (1/1) ... [2018-12-09 00:35:34,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ab3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:34, skipping insertion in model container [2018-12-09 00:35:34,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:35:34" (1/1) ... [2018-12-09 00:35:34,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:35:34,979 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:35:35,101 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1660) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.lambda$35(StandardFunctionHandler.java:315) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:208) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1320) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:539) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1897) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1513) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:963) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1490) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:963) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1342) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2241) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:539) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:129) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-09 00:35:35,103 INFO L168 Benchmark]: Toolchain (without parser) took 154.94 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 945.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 00:35:35,104 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:35:35,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.34 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:35:35,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.34 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:834) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 00:35:36,186 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 00:35:36,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 00:35:36,193 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 00:35:36,193 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 00:35:36,194 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 00:35:36,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 00:35:36,196 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 00:35:36,196 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 00:35:36,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 00:35:36,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 00:35:36,197 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 00:35:36,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 00:35:36,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 00:35:36,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 00:35:36,199 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 00:35:36,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 00:35:36,200 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 00:35:36,201 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 00:35:36,202 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 00:35:36,202 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 00:35:36,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 00:35:36,204 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 00:35:36,204 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 00:35:36,204 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 00:35:36,205 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 00:35:36,205 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 00:35:36,206 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 00:35:36,206 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 00:35:36,207 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 00:35:36,207 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 00:35:36,207 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 00:35:36,207 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 00:35:36,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 00:35:36,208 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 00:35:36,208 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 00:35:36,209 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 00:35:36,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 00:35:36,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 00:35:36,216 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 00:35:36,216 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 00:35:36,217 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 00:35:36,217 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 00:35:36,217 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 00:35:36,217 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 00:35:36,217 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 00:35:36,217 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 00:35:36,217 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 00:35:36,217 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 00:35:36,218 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 00:35:36,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:35:36,219 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 00:35:36,219 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 00:35:36,220 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 00:35:36,220 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 00:35:36,220 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6812207659d67444abdc9d105ff32acac8458b5 [2018-12-09 00:35:36,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 00:35:36,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 00:35:36,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 00:35:36,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 00:35:36,247 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 00:35:36,248 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c [2018-12-09 00:35:36,284 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/6afa53695/bc3cbfcef0d74276ae3d33e54b523c01/FLAG8f700df3a [2018-12-09 00:35:36,708 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 00:35:36,709 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/sv-benchmarks/c/float-newlib/double_req_bl_0882_true-unreach-call.c [2018-12-09 00:35:36,714 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/6afa53695/bc3cbfcef0d74276ae3d33e54b523c01/FLAG8f700df3a [2018-12-09 00:35:36,722 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/data/6afa53695/bc3cbfcef0d74276ae3d33e54b523c01 [2018-12-09 00:35:36,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 00:35:36,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 00:35:36,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 00:35:36,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 00:35:36,727 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 00:35:36,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:35:36" (1/1) ... [2018-12-09 00:35:36,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748af0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:36, skipping insertion in model container [2018-12-09 00:35:36,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:35:36" (1/1) ... [2018-12-09 00:35:36,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 00:35:36,753 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 00:35:36,915 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:35:36,921 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 00:35:36,982 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 00:35:37,037 INFO L195 MainTranslator]: Completed translation [2018-12-09 00:35:37,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37 WrapperNode [2018-12-09 00:35:37,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 00:35:37,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 00:35:37,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 00:35:37,039 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 00:35:37,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 00:35:37,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 00:35:37,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 00:35:37,061 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 00:35:37,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... [2018-12-09 00:35:37,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 00:35:37,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 00:35:37,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 00:35:37,112 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 00:35:37,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 00:35:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_double [2018-12-09 00:35:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_double [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2018-12-09 00:35:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 00:35:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_pow [2018-12-09 00:35:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_pow [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 00:35:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 00:35:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2018-12-09 00:35:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2018-12-09 00:35:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 00:35:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 00:35:37,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 00:35:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 00:35:37,333 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:38,371 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:38,844 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:39,799 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:39,823 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:39,841 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:39,855 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:39,876 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:42,024 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:48,789 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:48,913 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:51,611 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:51,641 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:52,069 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:35:52,107 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:04,210 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:04,730 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:04,779 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:07,139 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:07,167 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:09,695 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:11,851 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:14,038 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:15,283 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:15,321 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:15,342 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:15,617 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:18,436 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 00:36:18,443 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 00:36:18,444 INFO L280 CfgBuilder]: Removed 60 assue(true) statements. [2018-12-09 00:36:18,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:36:18 BoogieIcfgContainer [2018-12-09 00:36:18,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 00:36:18,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 00:36:18,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 00:36:18,447 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 00:36:18,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:35:36" (1/3) ... [2018-12-09 00:36:18,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4408c236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:36:18, skipping insertion in model container [2018-12-09 00:36:18,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:35:37" (2/3) ... [2018-12-09 00:36:18,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4408c236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:36:18, skipping insertion in model container [2018-12-09 00:36:18,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:36:18" (3/3) ... [2018-12-09 00:36:18,449 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0882_true-unreach-call.c [2018-12-09 00:36:18,455 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 00:36:18,459 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 00:36:18,468 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 00:36:18,486 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 00:36:18,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 00:36:18,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 00:36:18,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 00:36:18,487 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 00:36:18,487 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 00:36:18,487 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 00:36:18,487 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 00:36:18,487 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 00:36:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2018-12-09 00:36:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 00:36:18,509 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:36:18,509 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:36:18,510 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:36:18,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:36:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1650283176, now seen corresponding path program 1 times [2018-12-09 00:36:18,516 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:36:18,517 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 00:36:18,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:36:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:36:18,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:36:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:36:18,710 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:36:18,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:36:18,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 00:36:18,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 00:36:18,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 00:36:18,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:36:18,733 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 2 states. [2018-12-09 00:36:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:36:18,763 INFO L93 Difference]: Finished difference Result 457 states and 749 transitions. [2018-12-09 00:36:18,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 00:36:18,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-12-09 00:36:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:36:18,772 INFO L225 Difference]: With dead ends: 457 [2018-12-09 00:36:18,772 INFO L226 Difference]: Without dead ends: 228 [2018-12-09 00:36:18,775 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 00:36:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-12-09 00:36:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-12-09 00:36:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-09 00:36:18,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 309 transitions. [2018-12-09 00:36:18,808 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 309 transitions. Word has length 19 [2018-12-09 00:36:18,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:36:18,809 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 309 transitions. [2018-12-09 00:36:18,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 00:36:18,809 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 309 transitions. [2018-12-09 00:36:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 00:36:18,809 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:36:18,810 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:36:18,810 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:36:18,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:36:18,810 INFO L82 PathProgramCache]: Analyzing trace with hash -166928027, now seen corresponding path program 1 times [2018-12-09 00:36:18,811 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:36:18,811 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-09 00:36:18,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:36:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:36:19,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:36:19,105 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:36:19,106 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:36:19,110 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-12-09 00:36:19,174 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2018-12-09 00:36:19,174 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:36:19,187 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-12-09 00:36:19,192 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-12-09 00:36:19,192 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:36:19,196 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:19,198 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:19,208 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 00:36:19,208 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:46, output treesize:18 [2018-12-09 00:36:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:36:19,306 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:36:19,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:36:19,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:36:19,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:36:19,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:36:19,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:36:19,318 INFO L87 Difference]: Start difference. First operand 228 states and 309 transitions. Second operand 7 states. [2018-12-09 00:36:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:36:31,299 INFO L93 Difference]: Finished difference Result 249 states and 333 transitions. [2018-12-09 00:36:31,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 00:36:31,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-12-09 00:36:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:36:31,420 INFO L225 Difference]: With dead ends: 249 [2018-12-09 00:36:31,420 INFO L226 Difference]: Without dead ends: 234 [2018-12-09 00:36:31,421 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-09 00:36:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-12-09 00:36:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2018-12-09 00:36:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-09 00:36:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 308 transitions. [2018-12-09 00:36:31,437 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 308 transitions. Word has length 21 [2018-12-09 00:36:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:36:31,438 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 308 transitions. [2018-12-09 00:36:31,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:36:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 308 transitions. [2018-12-09 00:36:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:36:31,439 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:36:31,439 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:36:31,439 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:36:31,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:36:31,440 INFO L82 PathProgramCache]: Analyzing trace with hash -857621751, now seen corresponding path program 1 times [2018-12-09 00:36:31,440 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:36:31,440 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-09 00:36:31,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:36:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:36:31,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:36:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:36:31,720 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:36:31,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:36:31,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:36:31,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:36:31,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:36:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:36:31,730 INFO L87 Difference]: Start difference. First operand 228 states and 308 transitions. Second operand 7 states. [2018-12-09 00:36:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:36:43,274 INFO L93 Difference]: Finished difference Result 283 states and 374 transitions. [2018-12-09 00:36:43,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 00:36:43,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-09 00:36:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:36:43,277 INFO L225 Difference]: With dead ends: 283 [2018-12-09 00:36:43,277 INFO L226 Difference]: Without dead ends: 267 [2018-12-09 00:36:43,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-09 00:36:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-12-09 00:36:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 228. [2018-12-09 00:36:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-12-09 00:36:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 305 transitions. [2018-12-09 00:36:43,292 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 305 transitions. Word has length 23 [2018-12-09 00:36:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:36:43,293 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 305 transitions. [2018-12-09 00:36:43,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:36:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 305 transitions. [2018-12-09 00:36:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 00:36:43,294 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:36:43,294 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:36:43,294 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:36:43,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:36:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash 29881930, now seen corresponding path program 1 times [2018-12-09 00:36:43,295 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:36:43,295 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-09 00:36:43,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:36:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:36:43,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:36:43,628 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:36:43,629 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:36:43,630 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2018-12-09 00:36:43,669 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-12-09 00:36:43,669 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,690 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-12-09 00:36:43,698 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 4 [2018-12-09 00:36:43,698 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,703 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,709 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,745 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-09 00:36:43,745 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:49, output treesize:21 [2018-12-09 00:36:43,794 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:36:43,795 INFO L683 Elim1Store]: detected equality via solver [2018-12-09 00:36:43,796 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2018-12-09 00:36:43,852 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2018-12-09 00:36:43,879 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 9 [2018-12-09 00:36:43,880 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,905 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,932 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-12-09 00:36:43,942 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-12-09 00:36:43,942 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,944 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,958 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:36:43,989 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-09 00:36:43,989 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 5 variables, input treesize:74, output treesize:35 [2018-12-09 00:36:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:36:44,223 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:36:44,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:36:44,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 00:36:44,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 00:36:44,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 00:36:44,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-12-09 00:36:44,234 INFO L87 Difference]: Start difference. First operand 228 states and 305 transitions. Second operand 9 states. [2018-12-09 00:36:45,234 WARN L180 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2018-12-09 00:37:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:37:14,871 INFO L93 Difference]: Finished difference Result 257 states and 337 transitions. [2018-12-09 00:37:14,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 00:37:14,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-12-09 00:37:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:37:14,995 INFO L225 Difference]: With dead ends: 257 [2018-12-09 00:37:14,995 INFO L226 Difference]: Without dead ends: 241 [2018-12-09 00:37:14,996 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-12-09 00:37:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-12-09 00:37:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 227. [2018-12-09 00:37:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-12-09 00:37:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 303 transitions. [2018-12-09 00:37:15,009 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 303 transitions. Word has length 23 [2018-12-09 00:37:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:37:15,009 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 303 transitions. [2018-12-09 00:37:15,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 00:37:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 303 transitions. [2018-12-09 00:37:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 00:37:15,010 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:37:15,010 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:37:15,010 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:37:15,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:37:15,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2076363094, now seen corresponding path program 1 times [2018-12-09 00:37:15,010 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:37:15,011 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-09 00:37:15,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:37:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:37:15,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:37:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:37:15,434 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:37:15,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:37:15,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 00:37:15,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 00:37:15,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 00:37:15,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 00:37:15,446 INFO L87 Difference]: Start difference. First operand 227 states and 303 transitions. Second operand 6 states. [2018-12-09 00:37:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:37:26,409 INFO L93 Difference]: Finished difference Result 248 states and 326 transitions. [2018-12-09 00:37:26,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 00:37:26,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-12-09 00:37:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:37:26,539 INFO L225 Difference]: With dead ends: 248 [2018-12-09 00:37:26,539 INFO L226 Difference]: Without dead ends: 233 [2018-12-09 00:37:26,539 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:37:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-12-09 00:37:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227. [2018-12-09 00:37:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-12-09 00:37:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 302 transitions. [2018-12-09 00:37:26,557 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 302 transitions. Word has length 27 [2018-12-09 00:37:26,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:37:26,557 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 302 transitions. [2018-12-09 00:37:26,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 00:37:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 302 transitions. [2018-12-09 00:37:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 00:37:26,558 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:37:26,558 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:37:26,558 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:37:26,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:37:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1951936010, now seen corresponding path program 1 times [2018-12-09 00:37:26,559 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:37:26,559 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-09 00:37:26,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:37:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:37:27,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:37:29,721 WARN L832 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_~one_pow~0 |c___ieee754_pow_#in~x|) |c___ieee754_pow_#res|) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_~one_pow~0)) is different from false [2018-12-09 00:37:32,251 WARN L854 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_~one_pow~0 |c___ieee754_pow_#in~x|) |c___ieee754_pow_#res|) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_~one_pow~0)) is different from true [2018-12-09 00:37:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:37:32,286 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:37:32,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:37:32,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:37:32,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:37:32,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:37:32,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=29, Unknown=2, NotChecked=10, Total=56 [2018-12-09 00:37:32,304 INFO L87 Difference]: Start difference. First operand 227 states and 302 transitions. Second operand 8 states. [2018-12-09 00:37:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:37:48,518 INFO L93 Difference]: Finished difference Result 272 states and 355 transitions. [2018-12-09 00:37:48,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 00:37:48,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-09 00:37:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:37:48,521 INFO L225 Difference]: With dead ends: 272 [2018-12-09 00:37:48,521 INFO L226 Difference]: Without dead ends: 269 [2018-12-09 00:37:48,521 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=20, Invalid=38, Unknown=2, NotChecked=12, Total=72 [2018-12-09 00:37:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-12-09 00:37:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 231. [2018-12-09 00:37:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-12-09 00:37:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 306 transitions. [2018-12-09 00:37:48,539 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 306 transitions. Word has length 27 [2018-12-09 00:37:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:37:48,539 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 306 transitions. [2018-12-09 00:37:48,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:37:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 306 transitions. [2018-12-09 00:37:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 00:37:48,540 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:37:48,540 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:37:48,541 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:37:48,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:37:48,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1455527605, now seen corresponding path program 1 times [2018-12-09 00:37:48,541 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:37:48,541 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-09 00:37:48,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:37:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:37:48,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:37:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:37:48,817 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:37:48,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:37:48,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:37:48,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:37:48,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:37:48,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:37:48,828 INFO L87 Difference]: Start difference. First operand 231 states and 306 transitions. Second operand 8 states. [2018-12-09 00:38:03,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:38:03,328 INFO L93 Difference]: Finished difference Result 248 states and 323 transitions. [2018-12-09 00:38:03,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:38:03,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-09 00:38:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:38:03,461 INFO L225 Difference]: With dead ends: 248 [2018-12-09 00:38:03,461 INFO L226 Difference]: Without dead ends: 233 [2018-12-09 00:38:03,462 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-12-09 00:38:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-12-09 00:38:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2018-12-09 00:38:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-12-09 00:38:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 305 transitions. [2018-12-09 00:38:03,478 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 305 transitions. Word has length 27 [2018-12-09 00:38:03,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:38:03,479 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 305 transitions. [2018-12-09 00:38:03,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:38:03,479 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 305 transitions. [2018-12-09 00:38:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 00:38:03,480 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:38:03,480 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:38:03,480 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:38:03,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:38:03,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1297315135, now seen corresponding path program 1 times [2018-12-09 00:38:03,481 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:38:03,481 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-09 00:38:03,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:38:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:38:03,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:38:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:38:03,767 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:38:03,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:38:03,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:38:03,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:38:03,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:38:03,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:38:03,777 INFO L87 Difference]: Start difference. First operand 231 states and 305 transitions. Second operand 7 states. [2018-12-09 00:38:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:38:11,281 INFO L93 Difference]: Finished difference Result 347 states and 448 transitions. [2018-12-09 00:38:11,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:38:11,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-12-09 00:38:11,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:38:11,283 INFO L225 Difference]: With dead ends: 347 [2018-12-09 00:38:11,283 INFO L226 Difference]: Without dead ends: 263 [2018-12-09 00:38:11,284 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-12-09 00:38:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-12-09 00:38:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 225. [2018-12-09 00:38:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-12-09 00:38:11,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2018-12-09 00:38:11,305 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 29 [2018-12-09 00:38:11,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:38:11,305 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2018-12-09 00:38:11,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:38:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2018-12-09 00:38:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 00:38:11,306 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:38:11,306 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:38:11,306 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:38:11,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:38:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1799940619, now seen corresponding path program 1 times [2018-12-09 00:38:11,307 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:38:11,307 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-09 00:38:11,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:38:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:38:11,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:38:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:38:11,550 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:38:11,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:38:11,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 00:38:11,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 00:38:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 00:38:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-09 00:38:11,561 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand 7 states. [2018-12-09 00:38:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:38:29,756 INFO L93 Difference]: Finished difference Result 233 states and 300 transitions. [2018-12-09 00:38:29,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 00:38:29,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-12-09 00:38:29,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:38:29,758 INFO L225 Difference]: With dead ends: 233 [2018-12-09 00:38:29,758 INFO L226 Difference]: Without dead ends: 230 [2018-12-09 00:38:29,758 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-09 00:38:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-12-09 00:38:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2018-12-09 00:38:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-12-09 00:38:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 293 transitions. [2018-12-09 00:38:29,773 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 293 transitions. Word has length 29 [2018-12-09 00:38:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:38:29,773 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 293 transitions. [2018-12-09 00:38:29,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 00:38:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 293 transitions. [2018-12-09 00:38:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 00:38:29,774 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:38:29,774 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:38:29,774 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:38:29,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:38:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash -990593993, now seen corresponding path program 1 times [2018-12-09 00:38:29,775 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:38:29,775 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-09 00:38:29,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:38:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:38:29,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:38:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:38:30,021 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:38:30,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:38:30,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 00:38:30,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 00:38:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 00:38:30,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 00:38:30,039 INFO L87 Difference]: Start difference. First operand 226 states and 293 transitions. Second operand 6 states. [2018-12-09 00:38:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:38:46,175 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2018-12-09 00:38:46,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 00:38:46,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-12-09 00:38:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:38:46,178 INFO L225 Difference]: With dead ends: 296 [2018-12-09 00:38:46,178 INFO L226 Difference]: Without dead ends: 227 [2018-12-09 00:38:46,178 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:38:46,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-12-09 00:38:46,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 190. [2018-12-09 00:38:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-12-09 00:38:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 236 transitions. [2018-12-09 00:38:46,193 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 236 transitions. Word has length 29 [2018-12-09 00:38:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:38:46,193 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 236 transitions. [2018-12-09 00:38:46,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 00:38:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 236 transitions. [2018-12-09 00:38:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 00:38:46,193 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:38:46,193 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:38:46,194 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:38:46,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:38:46,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1745994737, now seen corresponding path program 1 times [2018-12-09 00:38:46,194 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:38:46,194 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-09 00:38:46,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:38:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:38:47,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:38:49,424 WARN L832 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_~one_pow~0 |c___ieee754_pow_#in~x|) |c___ieee754_pow_#res|) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_~one_pow~0)) is different from false [2018-12-09 00:38:51,829 WARN L854 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_~one_pow~0 |c___ieee754_pow_#in~x|) |c___ieee754_pow_#res|) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_~one_pow~0)) is different from true [2018-12-09 00:38:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:38:52,000 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:38:52,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:38:52,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-09 00:38:52,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 00:38:52,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 00:38:52,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=109, Unknown=2, NotChecked=20, Total=156 [2018-12-09 00:38:52,017 INFO L87 Difference]: Start difference. First operand 190 states and 236 transitions. Second operand 13 states. [2018-12-09 00:39:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:39:10,936 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2018-12-09 00:39:10,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 00:39:10,938 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2018-12-09 00:39:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:39:10,939 INFO L225 Difference]: With dead ends: 232 [2018-12-09 00:39:10,939 INFO L226 Difference]: Without dead ends: 216 [2018-12-09 00:39:10,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=71, Invalid=311, Unknown=2, NotChecked=36, Total=420 [2018-12-09 00:39:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-12-09 00:39:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 189. [2018-12-09 00:39:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-12-09 00:39:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2018-12-09 00:39:10,954 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 35 [2018-12-09 00:39:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:39:10,954 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2018-12-09 00:39:10,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 00:39:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2018-12-09 00:39:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 00:39:10,955 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:39:10,955 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:39:10,955 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:39:10,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:39:10,955 INFO L82 PathProgramCache]: Analyzing trace with hash 422241547, now seen corresponding path program 1 times [2018-12-09 00:39:10,955 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:39:10,955 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-09 00:39:10,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:39:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:39:11,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:39:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:39:11,928 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:39:11,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:39:11,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 00:39:11,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 00:39:11,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 00:39:11,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-12-09 00:39:11,946 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand 8 states. [2018-12-09 00:39:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:39:17,532 INFO L93 Difference]: Finished difference Result 242 states and 298 transitions. [2018-12-09 00:39:17,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 00:39:17,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-12-09 00:39:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:39:17,534 INFO L225 Difference]: With dead ends: 242 [2018-12-09 00:39:17,534 INFO L226 Difference]: Without dead ends: 165 [2018-12-09 00:39:17,535 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-12-09 00:39:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-12-09 00:39:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2018-12-09 00:39:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-12-09 00:39:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 193 transitions. [2018-12-09 00:39:17,543 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 193 transitions. Word has length 36 [2018-12-09 00:39:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:39:17,543 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 193 transitions. [2018-12-09 00:39:17,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 00:39:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 193 transitions. [2018-12-09 00:39:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-09 00:39:17,543 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:39:17,543 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:39:17,543 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:39:17,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:39:17,543 INFO L82 PathProgramCache]: Analyzing trace with hash 627806428, now seen corresponding path program 1 times [2018-12-09 00:39:17,544 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:39:17,544 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-09 00:39:17,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:39:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:39:17,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:39:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:39:17,935 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:39:17,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:39:17,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-12-09 00:39:17,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 00:39:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 00:39:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-12-09 00:39:17,945 INFO L87 Difference]: Start difference. First operand 156 states and 193 transitions. Second operand 12 states. [2018-12-09 00:39:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 00:39:32,866 INFO L93 Difference]: Finished difference Result 161 states and 198 transitions. [2018-12-09 00:39:32,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 00:39:32,867 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2018-12-09 00:39:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 00:39:32,867 INFO L225 Difference]: With dead ends: 161 [2018-12-09 00:39:32,867 INFO L226 Difference]: Without dead ends: 148 [2018-12-09 00:39:32,868 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-12-09 00:39:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-12-09 00:39:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-12-09 00:39:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-12-09 00:39:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 184 transitions. [2018-12-09 00:39:32,876 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 184 transitions. Word has length 37 [2018-12-09 00:39:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 00:39:32,876 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 184 transitions. [2018-12-09 00:39:32,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 00:39:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 184 transitions. [2018-12-09 00:39:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 00:39:32,876 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 00:39:32,876 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 00:39:32,877 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 00:39:32,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 00:39:32,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1092260135, now seen corresponding path program 1 times [2018-12-09 00:39:32,877 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 00:39:32,877 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_441a7584-e60e-4bbf-9754-e782168aab2a/bin-2019/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-12-09 00:39:32,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 00:39:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 00:39:33,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 00:39:33,835 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 60 [2018-12-09 00:39:33,840 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2018-12-09 00:39:33,853 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2018-12-09 00:39:33,854 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-09 00:39:33,859 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:39:33,864 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 00:39:33,886 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-12-09 00:39:33,886 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:90, output treesize:51 [2018-12-09 00:39:36,632 WARN L832 $PredicateComparison]: unable to prove that (and (exists ((|v_q#valueAsBitvector_33| (_ BitVec 64)) (|v_q#valueAsBitvector_32| (_ BitVec 64))) (and (= c___ieee754_pow_~z~1 (fp.div roundNearestTiesToEven c_~one_pow~0 (let ((.cse0 (concat (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_q#valueAsBitvector_32|)) ((_ extract 31 0) |v_q#valueAsBitvector_33|)))) (fp ((_ extract 63 63) .cse0) ((_ extract 62 52) .cse0) ((_ extract 51 0) .cse0))))) (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_32|) ((_ extract 62 52) |v_q#valueAsBitvector_32|) ((_ extract 51 0) |v_q#valueAsBitvector_32|)) |c___ieee754_pow_#in~x|) (= (fp ((_ extract 63 63) |v_q#valueAsBitvector_33|) ((_ extract 62 52) |v_q#valueAsBitvector_33|) ((_ extract 51 0) |v_q#valueAsBitvector_33|)) |c___ieee754_pow_#in~x|))) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_~one_pow~0)) is different from false [2018-12-09 00:40:23,018 WARN L180 SmtUtils]: Spent 10.36 s on a formula simplification that was a NOOP. DAG size: 33 [2018-12-09 00:40:48,150 WARN L180 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 31 [2018-12-09 00:40:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 00:40:56,769 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 00:40:56,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 00:40:56,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-12-09 00:40:56,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 00:40:56,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 00:40:56,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=157, Unknown=17, NotChecked=26, Total=240 [2018-12-09 00:40:56,789 INFO L87 Difference]: Start difference. First operand 148 states and 184 transitions. Second operand 16 states. [2018-12-09 00:41:32,235 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-09 00:41:32,236 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:651) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:255) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:270) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-12-09 00:41:32,238 INFO L168 Benchmark]: Toolchain (without parser) took 355514.60 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -238.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:41:32,239 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:41:32,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. [2018-12-09 00:41:32,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:41:32,240 INFO L168 Benchmark]: Boogie Preprocessor took 51.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 00:41:32,240 INFO L168 Benchmark]: RCFGBuilder took 41332.26 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: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. [2018-12-09 00:41:32,240 INFO L168 Benchmark]: TraceAbstraction took 313793.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.5 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -168.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 00:41:32,242 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 45.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 41332.26 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: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 313793.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.5 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -168.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...