./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/water_pid.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7fd08b3e226d625ffd75458b50e3f94c29ac1e83 ...................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/water_pid.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7fd08b3e226d625ffd75458b50e3f94c29ac1e83 .............................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 18:18:43,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:18:43,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:18:43,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:18:43,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:18:43,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:18:43,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:18:43,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:18:43,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:18:43,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:18:43,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:18:43,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:18:43,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:18:43,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:18:43,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:18:43,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:18:43,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:18:43,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:18:43,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:18:43,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:18:43,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:18:43,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:18:43,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:18:43,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:18:43,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:18:43,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:18:43,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:18:43,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:18:43,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:18:43,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:18:43,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:18:43,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:18:43,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:18:43,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:18:43,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:18:43,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:18:43,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:18:43,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:18:43,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:18:43,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:18:43,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:18:43,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:18:43,670 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:18:43,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:18:43,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:18:43,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:18:43,671 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:18:43,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:18:43,672 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:18:43,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:18:43,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:18:43,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:18:43,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:18:43,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:18:43,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:18:43,673 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:18:43,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:18:43,673 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:18:43,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:18:43,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:18:43,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:18:43,674 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:18:43,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:18:43,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:18:43,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:18:43,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:18:43,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:18:43,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:18:43,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:18:43,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:18:43,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:18:43,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fd08b3e226d625ffd75458b50e3f94c29ac1e83 [2019-12-07 18:18:43,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:18:43,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:18:43,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:18:43,801 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:18:43,801 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:18:43,802 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/../../sv-benchmarks/c/float-benchs/water_pid.c [2019-12-07 18:18:43,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/a0d5d5618/9ef1ac9bc3a04cf1813dd9f397aa54de/FLAG3b64a54f0 [2019-12-07 18:18:44,244 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:18:44,245 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/sv-benchmarks/c/float-benchs/water_pid.c [2019-12-07 18:18:44,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/a0d5d5618/9ef1ac9bc3a04cf1813dd9f397aa54de/FLAG3b64a54f0 [2019-12-07 18:18:44,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/a0d5d5618/9ef1ac9bc3a04cf1813dd9f397aa54de [2019-12-07 18:18:44,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:18:44,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:18:44,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:18:44,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:18:44,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:18:44,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d97e079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44, skipping insertion in model container [2019-12-07 18:18:44,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:18:44,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:18:44,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:18:44,425 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:18:44,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:18:44,449 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:18:44,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44 WrapperNode [2019-12-07 18:18:44,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:18:44,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:18:44,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:18:44,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:18:44,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:18:44,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:18:44,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:18:44,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:18:44,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... [2019-12-07 18:18:44,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:18:44,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:18:44,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:18:44,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:18:44,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:18:44,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:18:44,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:18:44,646 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:18:44,647 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 18:18:44,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:44 BoogieIcfgContainer [2019-12-07 18:18:44,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:18:44,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:18:44,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:18:44,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:18:44,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:18:44" (1/3) ... [2019-12-07 18:18:44,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c71057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:18:44, skipping insertion in model container [2019-12-07 18:18:44,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:44" (2/3) ... [2019-12-07 18:18:44,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c71057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:18:44, skipping insertion in model container [2019-12-07 18:18:44,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:44" (3/3) ... [2019-12-07 18:18:44,654 INFO L109 eAbstractionObserver]: Analyzing ICFG water_pid.c [2019-12-07 18:18:44,661 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:18:44,664 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:18:44,671 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:18:44,686 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:18:44,686 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:18:44,686 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:18:44,686 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:18:44,686 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:18:44,686 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:18:44,686 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:18:44,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:18:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-12-07 18:18:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 18:18:44,698 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:18:44,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:18:44,699 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:18:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2019-12-07 18:18:44,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:44,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972259548] [2019-12-07 18:18:44,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:44,789 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:44,790 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:18:44,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:18:44 BoogieIcfgContainer [2019-12-07 18:18:44,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:18:44,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:18:44,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:18:44,806 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:18:44,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:44" (3/4) ... [2019-12-07 18:18:44,809 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:18:44,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:18:44,811 INFO L168 Benchmark]: Toolchain (without parser) took 550.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -150.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:44,811 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:44,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:18:44,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:44,812 INFO L168 Benchmark]: Boogie Preprocessor took 16.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:44,812 INFO L168 Benchmark]: RCFGBuilder took 157.03 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:18:44,813 INFO L168 Benchmark]: TraceAbstraction took 157.19 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:18:44,813 INFO L168 Benchmark]: Witness Printer took 2.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:44,815 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 189.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.20 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 157.03 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 157.19 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 44, overapproximation of to_real at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39. Possible FailurePath: [L10] static NUM yn = 0; [L12] NUM ui = 0; [L22] NUM yi, yc; [L23] NUM K; [L24] NUM T; [L25] NUM taui; [L26] NUM taud; [L27] NUM ei, sumej, epi; [L28] int i; [L29] T = 1 [L30] taui = 1 [L31] taud = 1 [L32] K = .5 [L33] yc = .5 [L16] yn += ui [L17] return yn; VAL [yn=2] [L34] yi = y(0) [L35] epi = yc-yi [L36] sumej = epi [L37] i=0 VAL [yn=2] [L37] COND TRUE i<120 [L16] yn += ui [L17] return yn; VAL [yn=4] [L38] yi = y(i) [L39] ei = yc-yi [L40] sumej = sumej+ei [L41] ui = K*(ei+sumej*T/taui+taud/T*(ei-epi)) [L42] epi = ei [L6] COND TRUE !(cond) VAL [yn=4] [L6] __VERIFIER_error() VAL [yn=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 18:18:46,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:18:46,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:18:46,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:18:46,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:18:46,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:18:46,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:18:46,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:18:46,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:18:46,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:18:46,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:18:46,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:18:46,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:18:46,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:18:46,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:18:46,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:18:46,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:18:46,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:18:46,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:18:46,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:18:46,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:18:46,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:18:46,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:18:46,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:18:46,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:18:46,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:18:46,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:18:46,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:18:46,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:18:46,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:18:46,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:18:46,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:18:46,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:18:46,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:18:46,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:18:46,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:18:46,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:18:46,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:18:46,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:18:46,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:18:46,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:18:46,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 18:18:46,182 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:18:46,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:18:46,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:18:46,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:18:46,183 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:18:46,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:18:46,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:18:46,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:18:46,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:18:46,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:18:46,184 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:18:46,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:18:46,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:18:46,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:18:46,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:18:46,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:18:46,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:18:46,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:18:46,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 18:18:46,186 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fd08b3e226d625ffd75458b50e3f94c29ac1e83 [2019-12-07 18:18:46,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:18:46,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:18:46,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:18:46,363 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:18:46,363 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:18:46,364 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/../../sv-benchmarks/c/float-benchs/water_pid.c [2019-12-07 18:18:46,403 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/949bdb625/47fa1380297e47e989365ca7435c775f/FLAGd0ecf44e5 [2019-12-07 18:18:46,796 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:18:46,796 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/sv-benchmarks/c/float-benchs/water_pid.c [2019-12-07 18:18:46,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/949bdb625/47fa1380297e47e989365ca7435c775f/FLAGd0ecf44e5 [2019-12-07 18:18:47,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/data/949bdb625/47fa1380297e47e989365ca7435c775f [2019-12-07 18:18:47,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:18:47,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:18:47,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:18:47,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:18:47,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:18:47,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445e3d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47, skipping insertion in model container [2019-12-07 18:18:47,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:18:47,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:18:47,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:18:47,337 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:18:47,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:18:47,359 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:18:47,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47 WrapperNode [2019-12-07 18:18:47,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:18:47,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:18:47,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:18:47,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:18:47,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:18:47,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:18:47,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:18:47,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:18:47,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... [2019-12-07 18:18:47,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:18:47,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:18:47,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:18:47,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:18:47,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:18:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:18:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:18:51,280 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:18:51,280 INFO L287 CfgBuilder]: Removed 11 assume(true) statements. [2019-12-07 18:18:51,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:51 BoogieIcfgContainer [2019-12-07 18:18:51,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:18:51,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:18:51,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:18:51,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:18:51,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:18:47" (1/3) ... [2019-12-07 18:18:51,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ec65f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:18:51, skipping insertion in model container [2019-12-07 18:18:51,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:47" (2/3) ... [2019-12-07 18:18:51,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ec65f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:18:51, skipping insertion in model container [2019-12-07 18:18:51,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:51" (3/3) ... [2019-12-07 18:18:51,287 INFO L109 eAbstractionObserver]: Analyzing ICFG water_pid.c [2019-12-07 18:18:51,295 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:18:51,300 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:18:51,307 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:18:51,321 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:18:51,321 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:18:51,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:18:51,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:18:51,321 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:18:51,322 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:18:51,322 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:18:51,322 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:18:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-12-07 18:18:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 18:18:51,334 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:18:51,334 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:18:51,335 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:18:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:51,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1804134213, now seen corresponding path program 1 times [2019-12-07 18:18:51,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:18:51,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014725832] [2019-12-07 18:18:51,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/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 [2019-12-07 18:18:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:53,958 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 18:18:53,963 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:54,193 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-12-07 18:18:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:54,435 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:18:55,757 WARN L192 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-12-07 18:19:02,783 WARN L192 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 12 [2019-12-07 18:19:18,282 WARN L192 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 14 [2019-12-07 18:19:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:19:18,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014725832] [2019-12-07 18:19:18,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:19:18,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-12-07 18:19:18,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51007631] [2019-12-07 18:19:18,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:19:18,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:19:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:19:18,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2019-12-07 18:19:18,298 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 10 states. [2019-12-07 18:19:19,088 WARN L192 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-12-07 18:19:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:19:52,373 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-12-07 18:19:53,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:19:53,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2019-12-07 18:19:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:19:53,551 INFO L225 Difference]: With dead ends: 37 [2019-12-07 18:19:53,551 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 18:19:53,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2019-12-07 18:19:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 18:19:53,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-12-07 18:19:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 18:19:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 18:19:53,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2019-12-07 18:19:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:19:53,582 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 18:19:53,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:19:53,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 18:19:53,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:19:53,583 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:19:53,583 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:19:53,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 18:19:53,784 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:19:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:19:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash 729433995, now seen corresponding path program 1 times [2019-12-07 18:19:53,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:19:53,786 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654690946] [2019-12-07 18:19:53,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d126ef74-4e72-4e6d-8721-fbbeacafd860/bin/uautomizer/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 [2019-12-07 18:19:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:19:58,220 WARN L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 18:19:58,221 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:19:58,457 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-12-07 18:19:59,382 WARN L192 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2019-12-07 18:20:02,244 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.add c_currentRoundingMode .cse1 .cse1)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= (fp.add c_currentRoundingMode .cse0 .cse1) c_~yn~0) (= (fp.mul c_currentRoundingMode .cse2 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) .cse5) .cse5)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse5 .cse5) (fp.sub c_currentRoundingMode .cse3 .cse4))))) c_~ui~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_ULTIMATE.start_main_~yc~0)))) is different from false [2019-12-07 18:20:04,387 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= |c_ULTIMATE.start_y_#res| (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse6))) (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse0)) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse4 .cse4) (fp.sub c_currentRoundingMode .cse2 .cse3)))))))))) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~yc~0))) is different from false [2019-12-07 18:20:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2019-12-07 18:20:04,553 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:20:06,152 WARN L192 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2019-12-07 18:20:13,541 WARN L192 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 12 [2019-12-07 18:20:16,842 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse2) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~epi~0)))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2019-12-07 18:20:20,099 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse2) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~epi~0)))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2019-12-07 18:20:23,481 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 c_ULTIMATE.start_main_~epi~0))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2019-12-07 18:20:26,807 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 c_ULTIMATE.start_main_~epi~0))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2019-12-07 18:20:30,249 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 .cse4))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2019-12-07 18:20:33,648 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse2 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2)) (.cse4 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 .cse3) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse3 .cse4))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2019-12-07 18:20:35,806 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse2 (let ((.cse7 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse7 c_~ui~0))) (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode .cse2 (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 (fp.sub c_currentRoundingMode .cse2 .cse3)) (.cse5 (fp.sub c_currentRoundingMode .cse2 .cse7))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 .cse4) .cse6) .cse6)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse6 .cse6) (fp.sub c_currentRoundingMode .cse4 .cse5))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2019-12-07 18:20:37,969 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse2 (let ((.cse7 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse3 (fp.add c_currentRoundingMode .cse7 c_~ui~0))) (fp.add c_currentRoundingMode .cse3 (fp.mul c_currentRoundingMode .cse2 (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse4 (fp.sub c_currentRoundingMode .cse2 .cse3)) (.cse5 (fp.sub c_currentRoundingMode .cse2 .cse7))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse4 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 .cse4) .cse6) .cse6)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse6 .cse6) (fp.sub c_currentRoundingMode .cse4 .cse5))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2019-12-07 18:20:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2019-12-07 18:20:37,971 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654690946] [2019-12-07 18:20:37,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:20:37,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2019-12-07 18:20:37,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036129753] [2019-12-07 18:20:37,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 18:20:37,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:20:37,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 18:20:37,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=68, Unknown=10, NotChecked=126, Total=240 [2019-12-07 18:20:37,974 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 16 states. [2019-12-07 18:20:40,197 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse3 (let ((.cse8 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse4 (fp.add c_currentRoundingMode .cse8 c_~ui~0))) (fp.add c_currentRoundingMode .cse4 (fp.mul c_currentRoundingMode .cse3 (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse5 (fp.sub c_currentRoundingMode .cse3 .cse4)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse8))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 .cse5) .cse7) .cse7)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse7 .cse7) (fp.sub c_currentRoundingMode .cse5 .cse6))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.leq .cse0 .cse1) (= c_~ui~0 .cse2) (fp.geq .cse0 (fp.neg .cse1)) (= c_~yn~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2019-12-07 18:20:42,357 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (fp.sub c_currentRoundingMode .cse3 (let ((.cse8 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (let ((.cse4 (fp.add c_currentRoundingMode .cse8 c_~ui~0))) (fp.add c_currentRoundingMode .cse4 (fp.mul c_currentRoundingMode .cse3 (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse5 (fp.sub c_currentRoundingMode .cse3 .cse4)) (.cse6 (fp.sub c_currentRoundingMode .cse3 .cse8))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 .cse5) .cse7) .cse7)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse7 .cse7) (fp.sub c_currentRoundingMode .cse5 .cse6))))))))))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.leq .cse0 .cse1) (= c_~ui~0 .cse2) (fp.geq .cse0 (fp.neg .cse1)) (= c_~yn~0 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2019-12-07 18:20:45,325 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5)) (.cse7 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse7 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 .cse7))))))))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= .cse0 c_ULTIMATE.start_main_~T~0) (= .cse0 c_ULTIMATE.start_main_~taud~0) (= c_~ui~0 .cse1) (= .cse2 c_ULTIMATE.start_main_~K~0) (= c_~yn~0 (fp.add c_currentRoundingMode .cse1 c_~ui~0)) (= .cse0 c_ULTIMATE.start_main_~taui~0) (= c_~yn~0 |c_ULTIMATE.start_y_#res|) (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_ULTIMATE.start_main_~yc~0))) is different from false [2019-12-07 18:20:48,755 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5)) (.cse7 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse7 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 .cse7))))))))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= .cse0 c_ULTIMATE.start_main_~T~0) (= .cse0 c_ULTIMATE.start_main_~taud~0) (= c_~ui~0 .cse1) (= .cse2 c_ULTIMATE.start_main_~K~0) (= c_~yn~0 (fp.add c_currentRoundingMode .cse1 c_~ui~0)) (= .cse0 c_ULTIMATE.start_main_~taui~0) (= c_~yn~0 |c_ULTIMATE.start_y_#res|) (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_ULTIMATE.start_main_~yc~0))) is different from true [2019-12-07 18:20:51,708 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0))))))))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= .cse0 c_ULTIMATE.start_main_~T~0) (= .cse0 c_ULTIMATE.start_main_~taud~0) (= c_~ui~0 .cse1) (= .cse2 c_ULTIMATE.start_main_~K~0) (= c_~yn~0 (fp.add c_currentRoundingMode .cse1 c_~ui~0)) (= .cse0 c_ULTIMATE.start_main_~taui~0) (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_ULTIMATE.start_main_~yc~0) (= c_ULTIMATE.start_main_~epi~0 c_ULTIMATE.start_main_~sumej~0) (= c_ULTIMATE.start_main_~epi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0)))) is different from false [2019-12-07 18:20:55,106 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (let ((.cse5 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (fp.add c_currentRoundingMode .cse5 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0))))))))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= .cse0 c_ULTIMATE.start_main_~T~0) (= .cse0 c_ULTIMATE.start_main_~taud~0) (= c_~ui~0 .cse1) (= .cse2 c_ULTIMATE.start_main_~K~0) (= c_~yn~0 (fp.add c_currentRoundingMode .cse1 c_~ui~0)) (= .cse0 c_ULTIMATE.start_main_~taui~0) (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse2 c_ULTIMATE.start_main_~yc~0) (= c_ULTIMATE.start_main_~epi~0 c_ULTIMATE.start_main_~sumej~0) (= c_ULTIMATE.start_main_~epi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0)))) is different from true [2019-12-07 18:20:58,024 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse3 (fp.add c_currentRoundingMode .cse5 .cse5)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse1 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0)))))))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= .cse0 c_ULTIMATE.start_main_~T~0) (= .cse0 c_ULTIMATE.start_main_~taud~0) (fp.geq .cse1 (fp.neg .cse2)) (= c_ULTIMATE.start_main_~epi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse3)) (= .cse4 c_ULTIMATE.start_main_~K~0) (= (fp.add c_currentRoundingMode .cse3 .cse5) c_~yn~0) (= .cse0 c_ULTIMATE.start_main_~taui~0) (fp.leq .cse1 .cse2) (= c_~yn~0 |c_ULTIMATE.start_y_#res|) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse4 c_ULTIMATE.start_main_~yc~0) (= c_ULTIMATE.start_main_~epi~0 c_ULTIMATE.start_main_~sumej~0)))) is different from false [2019-12-07 18:21:01,376 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse3 (fp.add c_currentRoundingMode .cse5 .cse5)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse1 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~K~0 (let ((.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~sumej~0 .cse6) c_ULTIMATE.start_main_~T~0) c_ULTIMATE.start_main_~taui~0)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~taud~0 c_ULTIMATE.start_main_~T~0) (fp.sub c_currentRoundingMode .cse6 c_ULTIMATE.start_main_~epi~0)))))))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= .cse0 c_ULTIMATE.start_main_~T~0) (= .cse0 c_ULTIMATE.start_main_~taud~0) (fp.geq .cse1 (fp.neg .cse2)) (= c_ULTIMATE.start_main_~epi~0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse3)) (= .cse4 c_ULTIMATE.start_main_~K~0) (= (fp.add c_currentRoundingMode .cse3 .cse5) c_~yn~0) (= .cse0 c_ULTIMATE.start_main_~taui~0) (fp.leq .cse1 .cse2) (= c_~yn~0 |c_ULTIMATE.start_y_#res|) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse4 c_ULTIMATE.start_main_~yc~0) (= c_ULTIMATE.start_main_~epi~0 c_ULTIMATE.start_main_~sumej~0)))) is different from true [2019-12-07 18:21:03,510 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse0 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 (fp.add c_currentRoundingMode c_~yn~0 c_~ui~0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse2 (fp.add c_currentRoundingMode .cse3 .cse3)) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)) (= (fp.add c_currentRoundingMode .cse2 .cse3) c_~yn~0) (= (fp.mul c_currentRoundingMode .cse4 (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse5 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 c_~yn~0)) (.cse6 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse2))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse5 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse6 .cse5) .cse7) .cse7)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse7 .cse7) (fp.sub c_currentRoundingMode .cse5 .cse6))))) c_~ui~0) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse4 c_ULTIMATE.start_main_~yc~0)))) is different from false [2019-12-07 18:21:05,917 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 |c_ULTIMATE.start_y_#res|)) (.cse8 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 2.0)))) (and (= |c_ULTIMATE.start_y_#res| (let ((.cse6 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (let ((.cse5 (fp.add c_currentRoundingMode .cse6 .cse6))) (let ((.cse0 (fp.add c_currentRoundingMode .cse5 .cse6))) (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode .cse1 (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse2 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse0)) (.cse3 (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~yc~0 .cse5))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.div c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.add c_currentRoundingMode .cse3 .cse2) .cse4) .cse4)) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode .cse4 .cse4) (fp.sub c_currentRoundingMode .cse2 .cse3)))))))))) (fp.geq .cse7 (fp.neg .cse8)) (fp.leq .cse7 .cse8) (= c_currentRoundingMode roundNearestTiesToEven) (= .cse1 c_ULTIMATE.start_main_~yc~0))) is different from false [2019-12-07 18:21:09,645 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-12-07 18:21:09,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 18:21:09,848 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) 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:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:100) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:343) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:279) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:161) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:200) 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:714) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) 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:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: 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) ... 31 more [2019-12-07 18:21:09,854 INFO L168 Benchmark]: Toolchain (without parser) took 142669.01 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 952.4 MB in the beginning and 984.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 86.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:09,855 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:21:09,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.24 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:09,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:09,857 INFO L168 Benchmark]: Boogie Preprocessor took 18.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:09,857 INFO L168 Benchmark]: RCFGBuilder took 3848.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:09,858 INFO L168 Benchmark]: TraceAbstraction took 138569.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 984.2 MB in the end (delta: 97.6 MB). Peak memory consumption was 97.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:09,861 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 174.24 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3848.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 138569.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 984.2 MB in the end (delta: 97.6 MB). Peak memory consumption was 97.6 MB. 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...