./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/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 0e04f2515dd5c7ce697460622800d33932bf1903 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/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 0e04f2515dd5c7ce697460622800d33932bf1903 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:56:09,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:56:09,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:56:09,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:56:09,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:56:09,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:56:09,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:56:09,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:56:09,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:56:09,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:56:09,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:56:09,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:56:09,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:56:09,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:56:09,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:56:09,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:56:09,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:56:09,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:56:09,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:56:09,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:56:09,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:56:09,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:56:09,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:56:09,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:56:09,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:56:09,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:56:09,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:56:09,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:56:09,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:56:09,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:56:09,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:56:09,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:56:09,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:56:09,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:56:09,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:56:09,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:56:09,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:56:09,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:56:09,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:56:09,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:56:09,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:56:09,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 23:56:09,216 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:56:09,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:56:09,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:56:09,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:56:09,228 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:56:09,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:56:09,229 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:56:09,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:56:09,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:56:09,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:56:09,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:56:09,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:56:09,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:56:09,231 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:56:09,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:56:09,231 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:56:09,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:56:09,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:56:09,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:56:09,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:56:09,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:56:09,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:56:09,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:56:09,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:56:09,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:56:09,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:56:09,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:56:09,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:56:09,235 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_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/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 -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-11-19 23:56:09,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:56:09,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:56:09,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:56:09,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:56:09,400 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:56:09,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-19 23:56:09,461 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/17c4b5776/25a66d6b6b9946c4901e318027bf124b/FLAG203d2443d [2019-11-19 23:56:09,885 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:56:09,886 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-19 23:56:09,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/17c4b5776/25a66d6b6b9946c4901e318027bf124b/FLAG203d2443d [2019-11-19 23:56:10,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/17c4b5776/25a66d6b6b9946c4901e318027bf124b [2019-11-19 23:56:10,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:56:10,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:56:10,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:56:10,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:56:10,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:56:10,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edcc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10, skipping insertion in model container [2019-11-19 23:56:10,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,215 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:56:10,244 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:56:10,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:56:10,597 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:56:10,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:56:10,671 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:56:10,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10 WrapperNode [2019-11-19 23:56:10,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:56:10,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:56:10,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:56:10,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:56:10,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:56:10,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:56:10,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:56:10,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:56:10,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... [2019-11-19 23:56:10,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:56:10,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:56:10,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:56:10,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:56:10,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:56:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:56:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:56:11,362 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:56:11,362 INFO L285 CfgBuilder]: Removed 30 assume(true) statements. [2019-11-19 23:56:11,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:56:11 BoogieIcfgContainer [2019-11-19 23:56:11,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:56:11,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:56:11,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:56:11,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:56:11,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:56:10" (1/3) ... [2019-11-19 23:56:11,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea54ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:56:11, skipping insertion in model container [2019-11-19 23:56:11,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:10" (2/3) ... [2019-11-19 23:56:11,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea54ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:56:11, skipping insertion in model container [2019-11-19 23:56:11,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:56:11" (3/3) ... [2019-11-19 23:56:11,372 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-11-19 23:56:11,380 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:56:11,386 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-19 23:56:11,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-19 23:56:11,418 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:56:11,418 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:56:11,418 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:56:11,418 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:56:11,418 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:56:11,419 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:56:11,419 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:56:11,419 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:56:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-19 23:56:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 23:56:11,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:11,444 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:11,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-11-19 23:56:11,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:11,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118038459] [2019-11-19 23:56:11,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:11,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118038459] [2019-11-19 23:56:11,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:11,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-19 23:56:11,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092983533] [2019-11-19 23:56:11,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:56:11,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:56:11,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:56:11,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:56:11,884 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 8 states. [2019-11-19 23:56:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:13,645 INFO L93 Difference]: Finished difference Result 454 states and 688 transitions. [2019-11-19 23:56:13,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 23:56:13,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-19 23:56:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:13,675 INFO L225 Difference]: With dead ends: 454 [2019-11-19 23:56:13,675 INFO L226 Difference]: Without dead ends: 337 [2019-11-19 23:56:13,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:56:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-11-19 23:56:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 133. [2019-11-19 23:56:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-11-19 23:56:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2019-11-19 23:56:13,792 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 17 [2019-11-19 23:56:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:13,793 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2019-11-19 23:56:13,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:56:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2019-11-19 23:56:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 23:56:13,795 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:13,796 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:13,797 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:13,798 INFO L82 PathProgramCache]: Analyzing trace with hash 934676335, now seen corresponding path program 1 times [2019-11-19 23:56:13,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:13,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809229041] [2019-11-19 23:56:13,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:14,015 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809229041] [2019-11-19 23:56:14,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:14,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-19 23:56:14,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770717388] [2019-11-19 23:56:14,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 23:56:14,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:56:14,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 23:56:14,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:56:14,018 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 7 states. [2019-11-19 23:56:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:14,338 INFO L93 Difference]: Finished difference Result 288 states and 410 transitions. [2019-11-19 23:56:14,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 23:56:14,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-19 23:56:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:14,341 INFO L225 Difference]: With dead ends: 288 [2019-11-19 23:56:14,341 INFO L226 Difference]: Without dead ends: 204 [2019-11-19 23:56:14,343 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-19 23:56:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-11-19 23:56:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2019-11-19 23:56:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-11-19 23:56:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 274 transitions. [2019-11-19 23:56:14,362 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 274 transitions. Word has length 17 [2019-11-19 23:56:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:14,363 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 274 transitions. [2019-11-19 23:56:14,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 23:56:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 274 transitions. [2019-11-19 23:56:14,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-19 23:56:14,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:14,365 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:14,365 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:14,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1341099622, now seen corresponding path program 1 times [2019-11-19 23:56:14,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:14,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102110600] [2019-11-19 23:56:14,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:14,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102110600] [2019-11-19 23:56:14,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:14,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-19 23:56:14,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360796740] [2019-11-19 23:56:14,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:56:14,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:56:14,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:56:14,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:56:14,651 INFO L87 Difference]: Start difference. First operand 193 states and 274 transitions. Second operand 8 states. [2019-11-19 23:56:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:15,187 INFO L93 Difference]: Finished difference Result 304 states and 404 transitions. [2019-11-19 23:56:15,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 23:56:15,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-11-19 23:56:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:15,191 INFO L225 Difference]: With dead ends: 304 [2019-11-19 23:56:15,191 INFO L226 Difference]: Without dead ends: 256 [2019-11-19 23:56:15,192 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:56:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2019-11-19 23:56:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 182. [2019-11-19 23:56:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-11-19 23:56:15,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 256 transitions. [2019-11-19 23:56:15,226 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 256 transitions. Word has length 21 [2019-11-19 23:56:15,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:15,227 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 256 transitions. [2019-11-19 23:56:15,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:56:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 256 transitions. [2019-11-19 23:56:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 23:56:15,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:15,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:15,241 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1901024439, now seen corresponding path program 1 times [2019-11-19 23:56:15,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:15,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522923063] [2019-11-19 23:56:15,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:15,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522923063] [2019-11-19 23:56:15,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:15,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:56:15,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286844437] [2019-11-19 23:56:15,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 23:56:15,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:56:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:56:15,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:56:15,307 INFO L87 Difference]: Start difference. First operand 182 states and 256 transitions. Second operand 3 states. [2019-11-19 23:56:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:15,339 INFO L93 Difference]: Finished difference Result 336 states and 472 transitions. [2019-11-19 23:56:15,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:56:15,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-19 23:56:15,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:15,342 INFO L225 Difference]: With dead ends: 336 [2019-11-19 23:56:15,342 INFO L226 Difference]: Without dead ends: 261 [2019-11-19 23:56:15,346 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:56:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-11-19 23:56:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 232. [2019-11-19 23:56:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-11-19 23:56:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2019-11-19 23:56:15,374 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 25 [2019-11-19 23:56:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:15,375 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2019-11-19 23:56:15,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 23:56:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2019-11-19 23:56:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 23:56:15,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:15,383 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:15,383 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash 186737553, now seen corresponding path program 1 times [2019-11-19 23:56:15,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:15,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251997156] [2019-11-19 23:56:15,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:15,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251997156] [2019-11-19 23:56:15,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:15,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 23:56:15,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324328384] [2019-11-19 23:56:15,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:56:15,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:56:15,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:56:15,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:56:15,509 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand 6 states. [2019-11-19 23:56:15,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:15,719 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2019-11-19 23:56:15,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:56:15,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-19 23:56:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:15,722 INFO L225 Difference]: With dead ends: 358 [2019-11-19 23:56:15,722 INFO L226 Difference]: Without dead ends: 193 [2019-11-19 23:56:15,723 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-19 23:56:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-19 23:56:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2019-11-19 23:56:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-11-19 23:56:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 248 transitions. [2019-11-19 23:56:15,736 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 248 transitions. Word has length 25 [2019-11-19 23:56:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:15,737 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 248 transitions. [2019-11-19 23:56:15,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:56:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 248 transitions. [2019-11-19 23:56:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 23:56:15,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:15,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:15,739 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:15,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-11-19 23:56:15,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:15,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799018501] [2019-11-19 23:56:15,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:15,821 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799018501] [2019-11-19 23:56:15,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:15,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 23:56:15,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769239395] [2019-11-19 23:56:15,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:56:15,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:56:15,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:56:15,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:56:15,824 INFO L87 Difference]: Start difference. First operand 182 states and 248 transitions. Second operand 5 states. [2019-11-19 23:56:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:15,943 INFO L93 Difference]: Finished difference Result 313 states and 430 transitions. [2019-11-19 23:56:15,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:56:15,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-19 23:56:15,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:15,948 INFO L225 Difference]: With dead ends: 313 [2019-11-19 23:56:15,948 INFO L226 Difference]: Without dead ends: 238 [2019-11-19 23:56:15,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:56:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-11-19 23:56:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 190. [2019-11-19 23:56:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-11-19 23:56:15,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2019-11-19 23:56:15,963 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 29 [2019-11-19 23:56:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:15,963 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2019-11-19 23:56:15,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:56:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2019-11-19 23:56:15,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 23:56:15,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:15,965 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:15,965 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:15,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-11-19 23:56:15,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:56:15,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157314555] [2019-11-19 23:56:15,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:56:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:56:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:56:16,100 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:56:16,100 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 23:56:16,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:56:16 BoogieIcfgContainer [2019-11-19 23:56:16,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:56:16,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:56:16,138 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:56:16,141 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:56:16,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:56:11" (3/4) ... [2019-11-19 23:56:16,146 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:56:16,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:56:16,149 INFO L168 Benchmark]: Toolchain (without parser) took 5949.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -224.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:16,150 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:16,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:16,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:16,157 INFO L168 Benchmark]: Boogie Preprocessor took 36.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:16,158 INFO L168 Benchmark]: RCFGBuilder took 605.54 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:16,158 INFO L168 Benchmark]: TraceAbstraction took 4772.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -91.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:16,159 INFO L168 Benchmark]: Witness Printer took 8.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:16,166 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 473.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.28 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 605.54 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: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4772.34 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -91.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 8.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 2059 SDslu, 2424 SDs, 0 SdLazy, 601 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 377 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 12000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 23:56:18,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:56:18,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:56:18,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:56:18,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:56:18,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:56:18,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:56:18,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:56:18,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:56:18,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:56:18,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:56:18,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:56:18,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:56:18,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:56:18,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:56:18,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:56:18,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:56:18,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:56:18,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:56:18,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:56:18,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:56:18,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:56:18,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:56:18,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:56:18,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:56:18,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:56:18,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:56:18,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:56:18,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:56:18,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:56:18,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:56:18,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:56:18,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:56:18,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:56:18,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:56:18,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:56:18,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:56:18,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:56:18,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:56:18,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:56:18,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:56:18,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-19 23:56:18,402 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:56:18,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:56:18,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:56:18,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:56:18,405 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:56:18,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:56:18,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:56:18,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:56:18,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:56:18,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:56:18,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:56:18,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:56:18,407 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 23:56:18,407 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 23:56:18,408 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:56:18,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:56:18,408 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:56:18,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:56:18,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:56:18,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:56:18,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:56:18,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:56:18,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:56:18,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:56:18,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:56:18,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:56:18,411 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 23:56:18,412 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 23:56:18,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:56:18,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 23:56:18,412 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_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/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 -> 0e04f2515dd5c7ce697460622800d33932bf1903 [2019-11-19 23:56:18,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:56:18,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:56:18,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:56:18,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:56:18,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:56:18,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-19 23:56:18,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/aadc1fb6f/904bff58d660413cb3f96636128cc179/FLAGb01ab022f [2019-11-19 23:56:19,299 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:56:19,300 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-11-19 23:56:19,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/aadc1fb6f/904bff58d660413cb3f96636128cc179/FLAGb01ab022f [2019-11-19 23:56:19,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/data/aadc1fb6f/904bff58d660413cb3f96636128cc179 [2019-11-19 23:56:19,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:56:19,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:56:19,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:56:19,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:56:19,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:56:19,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:56:19" (1/1) ... [2019-11-19 23:56:19,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1448c2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:19, skipping insertion in model container [2019-11-19 23:56:19,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:56:19" (1/1) ... [2019-11-19 23:56:19,616 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:56:19,670 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:56:19,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:56:19,943 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:56:20,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:56:20,079 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:56:20,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20 WrapperNode [2019-11-19 23:56:20,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:56:20,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:56:20,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:56:20,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:56:20,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:56:20,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:56:20,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:56:20,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:56:20,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... [2019-11-19 23:56:20,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:56:20,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:56:20,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:56:20,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:56:20,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:56:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:56:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:56:20,920 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:56:20,920 INFO L285 CfgBuilder]: Removed 30 assume(true) statements. [2019-11-19 23:56:20,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:56:20 BoogieIcfgContainer [2019-11-19 23:56:20,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:56:20,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:56:20,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:56:20,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:56:20,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:56:19" (1/3) ... [2019-11-19 23:56:20,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26237fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:56:20, skipping insertion in model container [2019-11-19 23:56:20,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:56:20" (2/3) ... [2019-11-19 23:56:20,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26237fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:56:20, skipping insertion in model container [2019-11-19 23:56:20,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:56:20" (3/3) ... [2019-11-19 23:56:20,932 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-11-19 23:56:20,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:56:20,953 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-19 23:56:20,966 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-19 23:56:20,999 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:56:21,000 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:56:21,000 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:56:21,000 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:56:21,002 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:56:21,003 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:56:21,003 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:56:21,004 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:56:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-11-19 23:56:21,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 23:56:21,029 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:21,030 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:21,030 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-11-19 23:56:21,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:21,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1717026137] [2019-11-19 23:56:21,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:21,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 23:56:21,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:21,342 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:21,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1717026137] [2019-11-19 23:56:21,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:21,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-19 23:56:21,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863128366] [2019-11-19 23:56:21,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 23:56:21,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:21,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 23:56:21,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:56:21,402 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 7 states. [2019-11-19 23:56:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:22,163 INFO L93 Difference]: Finished difference Result 497 states and 751 transitions. [2019-11-19 23:56:22,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-19 23:56:22,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-19 23:56:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:22,194 INFO L225 Difference]: With dead ends: 497 [2019-11-19 23:56:22,194 INFO L226 Difference]: Without dead ends: 379 [2019-11-19 23:56:22,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:56:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-11-19 23:56:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 130. [2019-11-19 23:56:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-19 23:56:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2019-11-19 23:56:22,287 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 17 [2019-11-19 23:56:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:22,288 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2019-11-19 23:56:22,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 23:56:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2019-11-19 23:56:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-19 23:56:22,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:22,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:22,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:22,494 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash 216177638, now seen corresponding path program 1 times [2019-11-19 23:56:22,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:22,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [267113992] [2019-11-19 23:56:22,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:22,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:56:22,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:22,617 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:22,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [267113992] [2019-11-19 23:56:22,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:22,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 23:56:22,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346935076] [2019-11-19 23:56:22,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:56:22,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:22,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:56:22,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:56:22,649 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 5 states. [2019-11-19 23:56:22,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:22,865 INFO L93 Difference]: Finished difference Result 501 states and 705 transitions. [2019-11-19 23:56:22,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 23:56:22,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-19 23:56:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:22,874 INFO L225 Difference]: With dead ends: 501 [2019-11-19 23:56:22,875 INFO L226 Difference]: Without dead ends: 424 [2019-11-19 23:56:22,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:56:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-11-19 23:56:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 175. [2019-11-19 23:56:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-19 23:56:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 251 transitions. [2019-11-19 23:56:22,922 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 251 transitions. Word has length 21 [2019-11-19 23:56:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:22,923 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 251 transitions. [2019-11-19 23:56:22,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:56:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 251 transitions. [2019-11-19 23:56:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 23:56:22,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:22,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:23,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:23,138 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:23,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1163788538, now seen corresponding path program 1 times [2019-11-19 23:56:23,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:23,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [177716061] [2019-11-19 23:56:23,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:23,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:56:23,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:23,246 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:23,270 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [177716061] [2019-11-19 23:56:23,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:23,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 23:56:23,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033114604] [2019-11-19 23:56:23,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:56:23,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:23,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:56:23,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:56:23,272 INFO L87 Difference]: Start difference. First operand 175 states and 251 transitions. Second operand 5 states. [2019-11-19 23:56:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:23,442 INFO L93 Difference]: Finished difference Result 347 states and 483 transitions. [2019-11-19 23:56:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 23:56:23,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-19 23:56:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:23,445 INFO L225 Difference]: With dead ends: 347 [2019-11-19 23:56:23,445 INFO L226 Difference]: Without dead ends: 274 [2019-11-19 23:56:23,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:56:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-11-19 23:56:23,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2019-11-19 23:56:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-11-19 23:56:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 366 transitions. [2019-11-19 23:56:23,471 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 366 transitions. Word has length 25 [2019-11-19 23:56:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:23,472 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 366 transitions. [2019-11-19 23:56:23,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:56:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 366 transitions. [2019-11-19 23:56:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 23:56:23,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:23,476 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:23,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:23,678 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash 611218824, now seen corresponding path program 1 times [2019-11-19 23:56:23,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:23,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1567924698] [2019-11-19 23:56:23,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:23,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 23:56:23,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:23,833 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:23,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1567924698] [2019-11-19 23:56:23,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:23,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-19 23:56:23,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644845909] [2019-11-19 23:56:23,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:56:23,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:56:23,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:56:23,966 INFO L87 Difference]: Start difference. First operand 257 states and 366 transitions. Second operand 8 states. [2019-11-19 23:56:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:26,488 INFO L93 Difference]: Finished difference Result 1091 states and 1532 transitions. [2019-11-19 23:56:26,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-19 23:56:26,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-11-19 23:56:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:26,495 INFO L225 Difference]: With dead ends: 1091 [2019-11-19 23:56:26,495 INFO L226 Difference]: Without dead ends: 974 [2019-11-19 23:56:26,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-11-19 23:56:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2019-11-19 23:56:26,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 277. [2019-11-19 23:56:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-11-19 23:56:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 392 transitions. [2019-11-19 23:56:26,529 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 392 transitions. Word has length 25 [2019-11-19 23:56:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:26,531 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 392 transitions. [2019-11-19 23:56:26,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:56:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 392 transitions. [2019-11-19 23:56:26,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 23:56:26,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:26,534 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:26,735 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:26,735 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:26,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash 611278406, now seen corresponding path program 1 times [2019-11-19 23:56:26,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:26,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [87255195] [2019-11-19 23:56:26,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:26,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:56:26,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:26,846 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:26,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [87255195] [2019-11-19 23:56:26,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:26,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-19 23:56:26,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691653901] [2019-11-19 23:56:26,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:56:26,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:26,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:56:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:56:26,853 INFO L87 Difference]: Start difference. First operand 277 states and 392 transitions. Second operand 6 states. [2019-11-19 23:56:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:27,057 INFO L93 Difference]: Finished difference Result 377 states and 518 transitions. [2019-11-19 23:56:27,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 23:56:27,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-19 23:56:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:27,060 INFO L225 Difference]: With dead ends: 377 [2019-11-19 23:56:27,060 INFO L226 Difference]: Without dead ends: 310 [2019-11-19 23:56:27,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:56:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-11-19 23:56:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 257. [2019-11-19 23:56:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-11-19 23:56:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 361 transitions. [2019-11-19 23:56:27,082 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 361 transitions. Word has length 25 [2019-11-19 23:56:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:27,083 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 361 transitions. [2019-11-19 23:56:27,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:56:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 361 transitions. [2019-11-19 23:56:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 23:56:27,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:27,088 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:27,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:27,291 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:27,291 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-11-19 23:56:27,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:27,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1261728638] [2019-11-19 23:56:27,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:27,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:56:27,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:27,376 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:27,428 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1261728638] [2019-11-19 23:56:27,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:27,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-19 23:56:27,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922521369] [2019-11-19 23:56:27,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 23:56:27,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:27,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 23:56:27,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-19 23:56:27,430 INFO L87 Difference]: Start difference. First operand 257 states and 361 transitions. Second operand 10 states. [2019-11-19 23:56:27,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:27,987 INFO L93 Difference]: Finished difference Result 502 states and 693 transitions. [2019-11-19 23:56:27,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 23:56:27,988 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-11-19 23:56:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:27,991 INFO L225 Difference]: With dead ends: 502 [2019-11-19 23:56:27,991 INFO L226 Difference]: Without dead ends: 439 [2019-11-19 23:56:27,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-11-19 23:56:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-11-19 23:56:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 267. [2019-11-19 23:56:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-11-19 23:56:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 376 transitions. [2019-11-19 23:56:28,016 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 376 transitions. Word has length 29 [2019-11-19 23:56:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:28,019 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 376 transitions. [2019-11-19 23:56:28,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 23:56:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 376 transitions. [2019-11-19 23:56:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 23:56:28,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:28,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:28,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:28,226 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -871267815, now seen corresponding path program 1 times [2019-11-19 23:56:28,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:28,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [625172370] [2019-11-19 23:56:28,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:28,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 23:56:28,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:28,353 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:28,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [625172370] [2019-11-19 23:56:28,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:28,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-19 23:56:28,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228866430] [2019-11-19 23:56:28,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:56:28,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:28,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:56:28,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:56:28,381 INFO L87 Difference]: Start difference. First operand 267 states and 376 transitions. Second operand 6 states. [2019-11-19 23:56:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:28,452 INFO L93 Difference]: Finished difference Result 514 states and 709 transitions. [2019-11-19 23:56:28,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:56:28,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-19 23:56:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:28,456 INFO L225 Difference]: With dead ends: 514 [2019-11-19 23:56:28,456 INFO L226 Difference]: Without dead ends: 427 [2019-11-19 23:56:28,457 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:56:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-11-19 23:56:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2019-11-19 23:56:28,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-11-19 23:56:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 480 transitions. [2019-11-19 23:56:28,483 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 480 transitions. Word has length 29 [2019-11-19 23:56:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:28,484 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 480 transitions. [2019-11-19 23:56:28,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:56:28,484 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 480 transitions. [2019-11-19 23:56:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-19 23:56:28,485 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:28,485 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:28,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:28,690 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:28,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-11-19 23:56:28,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:28,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1162195880] [2019-11-19 23:56:28,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:28,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 23:56:28,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:28,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-19 23:56:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:28,831 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:28,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1162195880] [2019-11-19 23:56:28,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:28,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-19 23:56:28,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847318679] [2019-11-19 23:56:28,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:56:28,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:28,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:56:28,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:56:28,867 INFO L87 Difference]: Start difference. First operand 349 states and 480 transitions. Second operand 6 states. [2019-11-19 23:56:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:29,113 INFO L93 Difference]: Finished difference Result 480 states and 656 transitions. [2019-11-19 23:56:29,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:56:29,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-11-19 23:56:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:29,117 INFO L225 Difference]: With dead ends: 480 [2019-11-19 23:56:29,117 INFO L226 Difference]: Without dead ends: 478 [2019-11-19 23:56:29,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-19 23:56:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-11-19 23:56:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 347. [2019-11-19 23:56:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-11-19 23:56:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 473 transitions. [2019-11-19 23:56:29,149 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 473 transitions. Word has length 29 [2019-11-19 23:56:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:29,150 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 473 transitions. [2019-11-19 23:56:29,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:56:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 473 transitions. [2019-11-19 23:56:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-19 23:56:29,151 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:29,151 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:29,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:29,355 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:29,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1174763763, now seen corresponding path program 1 times [2019-11-19 23:56:29,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:29,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1958513657] [2019-11-19 23:56:29,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:56:29,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:56:29,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:56:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:29,420 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 23:56:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:56:29,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1958513657] [2019-11-19 23:56:29,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:56:29,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-19 23:56:29,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044528607] [2019-11-19 23:56:29,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 23:56:29,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 23:56:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 23:56:29,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:56:29,450 INFO L87 Difference]: Start difference. First operand 347 states and 473 transitions. Second operand 6 states. [2019-11-19 23:56:29,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:56:29,558 INFO L93 Difference]: Finished difference Result 406 states and 547 transitions. [2019-11-19 23:56:29,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:56:29,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-11-19 23:56:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:56:29,561 INFO L225 Difference]: With dead ends: 406 [2019-11-19 23:56:29,561 INFO L226 Difference]: Without dead ends: 401 [2019-11-19 23:56:29,562 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:56:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-11-19 23:56:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 347. [2019-11-19 23:56:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-11-19 23:56:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 470 transitions. [2019-11-19 23:56:29,589 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 470 transitions. Word has length 30 [2019-11-19 23:56:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:56:29,589 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 470 transitions. [2019-11-19 23:56:29,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 23:56:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 470 transitions. [2019-11-19 23:56:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-19 23:56:29,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:56:29,591 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:56:29,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:29,797 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 23:56:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:56:29,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1078465644, now seen corresponding path program 1 times [2019-11-19 23:56:29,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 23:56:29,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1966531300] [2019-11-19 23:56:29,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:56:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:56:30,029 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 23:56:30,030 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 23:56:30,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 23:56:30,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:56:30 BoogieIcfgContainer [2019-11-19 23:56:30,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:56:30,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:56:30,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:56:30,276 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:56:30,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:56:20" (3/4) ... [2019-11-19 23:56:30,279 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 23:56:30,343 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0adea25d-d831-4ee0-bd19-1ab1fc31ee4d/bin/uautomizer/witness.graphml [2019-11-19 23:56:30,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:56:30,345 INFO L168 Benchmark]: Toolchain (without parser) took 10756.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 956.4 MB in the beginning and 898.1 MB in the end (delta: 58.3 MB). Peak memory consumption was 234.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:30,346 INFO L168 Benchmark]: CDTParser took 0.29 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. [2019-11-19 23:56:30,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -134.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:30,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:30,347 INFO L168 Benchmark]: Boogie Preprocessor took 62.32 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:30,348 INFO L168 Benchmark]: RCFGBuilder took 718.39 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: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:30,349 INFO L168 Benchmark]: TraceAbstraction took 9352.53 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 898.1 MB in the end (delta: 152.5 MB). Peak memory consumption was 227.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:56:30,349 INFO L168 Benchmark]: Witness Printer took 67.99 ms. Allocated memory is still 1.2 GB. Free memory is still 898.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:56:30,351 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 485.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -134.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 62.32 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 718.39 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: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9352.53 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 898.1 MB in the end (delta: 152.5 MB). Peak memory consumption was 227.0 MB. Max. memory is 11.5 GB. * Witness Printer took 67.99 ms. Allocated memory is still 1.2 GB. Free memory is still 898.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 9.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1327 SDtfs, 3512 SDslu, 5147 SDs, 0 SdLazy, 1110 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1700 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 6 QuantifiedInterpolants, 19474 SizeOfPredicates, 46 NumberOfNonLiveVariables, 522 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...