./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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-cad4683 [2019-10-22 09:00:16,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:16,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:16,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:00:16,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:00:16,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:00:16,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:00:16,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:00:16,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:00:16,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:00:16,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:00:16,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:00:16,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:00:16,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:00:16,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:00:16,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:00:16,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:00:16,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:00:16,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:00:16,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:00:16,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:00:16,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:00:16,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:00:16,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:00:16,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:00:16,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:00:16,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:00:16,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:00:16,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:00:16,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:00:16,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:16,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:16,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:16,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:16,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:16,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:16,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:16,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:16,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:16,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:16,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:16,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:00:16,163 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:16,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:16,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:16,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:16,171 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:16,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:16,171 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:16,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:00:16,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:16,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:16,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:16,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:16,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:16,172 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:16,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:16,172 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:16,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:16,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:16,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:16,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:16,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:16,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:16,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:16,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:16,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:16,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:00:16,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:00:16,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:16,174 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/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:16,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:16,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:16,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:16,228 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:16,229 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:16,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 09:00:16,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/0a4c91d8a/6b8e8c0758cb410886b3ddf4f0e37f32/FLAGe17fdc5c8 [2019-10-22 09:00:16,706 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:16,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 09:00:16,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/0a4c91d8a/6b8e8c0758cb410886b3ddf4f0e37f32/FLAGe17fdc5c8 [2019-10-22 09:00:17,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/0a4c91d8a/6b8e8c0758cb410886b3ddf4f0e37f32 [2019-10-22 09:00:17,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:17,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:17,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:17,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:17,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:17,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502708ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17, skipping insertion in model container [2019-10-22 09:00:17,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,123 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:17,153 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:17,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:17,442 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:17,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:17,529 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:17,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17 WrapperNode [2019-10-22 09:00:17,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:17,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:17,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:17,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:17,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:17,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:17,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:17,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:17,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... [2019-10-22 09:00:17,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:17,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:17,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:17,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:17,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:18,162 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:18,162 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-10-22 09:00:18,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:18 BoogieIcfgContainer [2019-10-22 09:00:18,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:18,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:18,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:18,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:18,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:17" (1/3) ... [2019-10-22 09:00:18,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ec5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:18, skipping insertion in model container [2019-10-22 09:00:18,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:17" (2/3) ... [2019-10-22 09:00:18,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ec5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:18, skipping insertion in model container [2019-10-22 09:00:18,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:18" (3/3) ... [2019-10-22 09:00:18,174 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-10-22 09:00:18,181 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:18,186 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 09:00:18,194 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 09:00:18,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:18,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:18,217 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:18,217 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:18,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:18,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:18,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:18,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-22 09:00:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:00:18,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:18,255 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:18,257 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-10-22 09:00:18,268 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:18,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375929067] [2019-10-22 09:00:18,268 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:18,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:18,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375929067] [2019-10-22 09:00:18,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:18,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:00:18,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482373151] [2019-10-22 09:00:18,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:18,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:18,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:18,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:18,554 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 8 states. [2019-10-22 09:00:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:19,991 INFO L93 Difference]: Finished difference Result 454 states and 688 transitions. [2019-10-22 09:00:19,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 09:00:19,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 09:00:19,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:20,008 INFO L225 Difference]: With dead ends: 454 [2019-10-22 09:00:20,009 INFO L226 Difference]: Without dead ends: 337 [2019-10-22 09:00:20,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-10-22 09:00:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-10-22 09:00:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 133. [2019-10-22 09:00:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-22 09:00:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2019-10-22 09:00:20,067 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 17 [2019-10-22 09:00:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:20,067 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2019-10-22 09:00:20,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2019-10-22 09:00:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:00:20,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:20,068 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:20,069 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:20,069 INFO L82 PathProgramCache]: Analyzing trace with hash 934676335, now seen corresponding path program 1 times [2019-10-22 09:00:20,069 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:20,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751081245] [2019-10-22 09:00:20,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:20,070 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:20,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:20,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751081245] [2019-10-22 09:00:20,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:20,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:00:20,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410429746] [2019-10-22 09:00:20,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:00:20,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:20,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:00:20,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:20,204 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 7 states. [2019-10-22 09:00:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:20,451 INFO L93 Difference]: Finished difference Result 288 states and 410 transitions. [2019-10-22 09:00:20,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:00:20,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 09:00:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:20,453 INFO L225 Difference]: With dead ends: 288 [2019-10-22 09:00:20,453 INFO L226 Difference]: Without dead ends: 204 [2019-10-22 09:00:20,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:00:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-22 09:00:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2019-10-22 09:00:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-22 09:00:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 274 transitions. [2019-10-22 09:00:20,486 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 274 transitions. Word has length 17 [2019-10-22 09:00:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:20,487 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 274 transitions. [2019-10-22 09:00:20,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:00:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 274 transitions. [2019-10-22 09:00:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:00:20,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:20,488 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:20,489 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:20,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:20,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1341099622, now seen corresponding path program 1 times [2019-10-22 09:00:20,489 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:20,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48626201] [2019-10-22 09:00:20,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:20,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:20,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:20,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48626201] [2019-10-22 09:00:20,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:20,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:00:20,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698780160] [2019-10-22 09:00:20,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:20,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:20,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:20,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:20,709 INFO L87 Difference]: Start difference. First operand 193 states and 274 transitions. Second operand 8 states. [2019-10-22 09:00:21,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:21,072 INFO L93 Difference]: Finished difference Result 304 states and 404 transitions. [2019-10-22 09:00:21,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 09:00:21,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-22 09:00:21,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:21,075 INFO L225 Difference]: With dead ends: 304 [2019-10-22 09:00:21,075 INFO L226 Difference]: Without dead ends: 256 [2019-10-22 09:00:21,076 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2019-10-22 09:00:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2019-10-22 09:00:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 182. [2019-10-22 09:00:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 09:00:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 256 transitions. [2019-10-22 09:00:21,089 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 256 transitions. Word has length 21 [2019-10-22 09:00:21,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:21,090 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 256 transitions. [2019-10-22 09:00:21,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 256 transitions. [2019-10-22 09:00:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:21,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:21,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:21,092 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1901024439, now seen corresponding path program 1 times [2019-10-22 09:00:21,092 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:21,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671837497] [2019-10-22 09:00:21,093 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,093 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:21,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671837497] [2019-10-22 09:00:21,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:21,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:00:21,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266553506] [2019-10-22 09:00:21,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:00:21,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:21,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:00:21,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:21,140 INFO L87 Difference]: Start difference. First operand 182 states and 256 transitions. Second operand 3 states. [2019-10-22 09:00:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:21,165 INFO L93 Difference]: Finished difference Result 336 states and 472 transitions. [2019-10-22 09:00:21,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:00:21,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 09:00:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:21,167 INFO L225 Difference]: With dead ends: 336 [2019-10-22 09:00:21,167 INFO L226 Difference]: Without dead ends: 261 [2019-10-22 09:00:21,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:00:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-22 09:00:21,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 232. [2019-10-22 09:00:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-10-22 09:00:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 321 transitions. [2019-10-22 09:00:21,185 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 321 transitions. Word has length 25 [2019-10-22 09:00:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:21,185 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 321 transitions. [2019-10-22 09:00:21,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:00:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 321 transitions. [2019-10-22 09:00:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:21,187 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:21,187 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:21,187 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 186737553, now seen corresponding path program 1 times [2019-10-22 09:00:21,188 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:21,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768896386] [2019-10-22 09:00:21,188 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,188 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:21,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768896386] [2019-10-22 09:00:21,286 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:21,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:21,286 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654941372] [2019-10-22 09:00:21,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:21,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:21,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:21,287 INFO L87 Difference]: Start difference. First operand 232 states and 321 transitions. Second operand 6 states. [2019-10-22 09:00:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:21,444 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2019-10-22 09:00:21,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:00:21,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-22 09:00:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:21,446 INFO L225 Difference]: With dead ends: 358 [2019-10-22 09:00:21,446 INFO L226 Difference]: Without dead ends: 193 [2019-10-22 09:00:21,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-22 09:00:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2019-10-22 09:00:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 09:00:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 248 transitions. [2019-10-22 09:00:21,467 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 248 transitions. Word has length 25 [2019-10-22 09:00:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:21,467 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 248 transitions. [2019-10-22 09:00:21,467 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 248 transitions. [2019-10-22 09:00:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:00:21,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:21,473 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:21,474 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:21,474 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-10-22 09:00:21,474 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:21,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117884770] [2019-10-22 09:00:21,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:21,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117884770] [2019-10-22 09:00:21,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:21,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:00:21,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592133145] [2019-10-22 09:00:21,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:21,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:00:21,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:21,533 INFO L87 Difference]: Start difference. First operand 182 states and 248 transitions. Second operand 5 states. [2019-10-22 09:00:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:21,620 INFO L93 Difference]: Finished difference Result 313 states and 430 transitions. [2019-10-22 09:00:21,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:21,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 09:00:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:21,623 INFO L225 Difference]: With dead ends: 313 [2019-10-22 09:00:21,623 INFO L226 Difference]: Without dead ends: 238 [2019-10-22 09:00:21,623 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-10-22 09:00:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 190. [2019-10-22 09:00:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2019-10-22 09:00:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2019-10-22 09:00:21,637 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 29 [2019-10-22 09:00:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:21,637 INFO L462 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2019-10-22 09:00:21,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2019-10-22 09:00:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:00:21,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:21,639 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:21,639 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-10-22 09:00:21,640 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:00:21,640 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781027298] [2019-10-22 09:00:21,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:00:21,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:00:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:21,820 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:00:21,824 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:00:21,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:21 BoogieIcfgContainer [2019-10-22 09:00:21,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:21,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:21,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:21,863 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:21,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:18" (3/4) ... [2019-10-22 09:00:21,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:00:21,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:21,871 INFO L168 Benchmark]: Toolchain (without parser) took 4761.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.0 GB in the end (delta: -90.9 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:21,872 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:21,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -182.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:21,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.91 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:21,875 INFO L168 Benchmark]: Boogie Preprocessor took 30.72 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:21,876 INFO L168 Benchmark]: RCFGBuilder took 539.64 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: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:21,878 INFO L168 Benchmark]: TraceAbstraction took 3697.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:21,879 INFO L168 Benchmark]: Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:21,881 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 420.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -182.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.91 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.72 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 539.64 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: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3697.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 2059 SDslu, 2424 SDs, 0 SdLazy, 601 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 377 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 12000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 09:00:23,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:00:23,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:00:23,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-22 09:00:24,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:00:24,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:00:24,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:00:24,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:00:24,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:00:24,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:00:24,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:00:24,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:00:24,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:00:24,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:00:24,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:00:24,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 09:00:24,035 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:00:24,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:00:24,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:00:24,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:00:24,037 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:00:24,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:00:24,037 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:00:24,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:00:24,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:00:24,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:00:24,039 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:00:24,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:00:24,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:00:24,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:00:24,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:00:24,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:00:24,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:00:24,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:00:24,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:00:24,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:00:24,042 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:00:24,042 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:00:24,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:00:24,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:00:24,043 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:24,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:00:24,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:00:24,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:00:24,104 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:00:24,105 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:00:24,105 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 09:00:24,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/644cfd299/1044783174e847978b466f300c05b488/FLAG209014ffe [2019-10-22 09:00:24,591 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:00:24,591 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2019-10-22 09:00:24,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/644cfd299/1044783174e847978b466f300c05b488/FLAG209014ffe [2019-10-22 09:00:24,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/data/644cfd299/1044783174e847978b466f300c05b488 [2019-10-22 09:00:24,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:00:24,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:00:24,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:24,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:00:24,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:00:24,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:24" (1/1) ... [2019-10-22 09:00:24,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12241912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:24, skipping insertion in model container [2019-10-22 09:00:24,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:00:24" (1/1) ... [2019-10-22 09:00:24,927 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:00:24,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:00:25,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:25,190 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:00:25,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:00:25,349 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:00:25,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25 WrapperNode [2019-10-22 09:00:25,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:00:25,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:25,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:00:25,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:00:25,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:00:25,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:00:25,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:00:25,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:00:25,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... [2019-10-22 09:00:25,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:00:25,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:00:25,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:00:25,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:00:25,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:25,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:00:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:00:26,065 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:00:26,065 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-10-22 09:00:26,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:26 BoogieIcfgContainer [2019-10-22 09:00:26,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:00:26,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:00:26,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:00:26,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:00:26,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:00:24" (1/3) ... [2019-10-22 09:00:26,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1814a237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:26, skipping insertion in model container [2019-10-22 09:00:26,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:00:25" (2/3) ... [2019-10-22 09:00:26,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1814a237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:00:26, skipping insertion in model container [2019-10-22 09:00:26,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:26" (3/3) ... [2019-10-22 09:00:26,075 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2019-10-22 09:00:26,083 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:00:26,090 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 09:00:26,101 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 09:00:26,130 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:00:26,131 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:00:26,131 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:00:26,131 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:00:26,131 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:00:26,131 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:00:26,131 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:00:26,132 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:00:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-22 09:00:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:00:26,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:26,156 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:26,158 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 934616753, now seen corresponding path program 1 times [2019-10-22 09:00:26,171 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:26,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [102897044] [2019-10-22 09:00:26,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:26,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:00:26,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:26,326 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:26,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [102897044] [2019-10-22 09:00:26,345 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:26,345 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-10-22 09:00:26,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025136753] [2019-10-22 09:00:26,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:00:26,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:26,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:00:26,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:26,369 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 7 states. [2019-10-22 09:00:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:26,904 INFO L93 Difference]: Finished difference Result 497 states and 751 transitions. [2019-10-22 09:00:26,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:00:26,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 09:00:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:26,921 INFO L225 Difference]: With dead ends: 497 [2019-10-22 09:00:26,921 INFO L226 Difference]: Without dead ends: 379 [2019-10-22 09:00:26,925 INFO L600 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 [2019-10-22 09:00:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-10-22 09:00:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 130. [2019-10-22 09:00:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-22 09:00:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 187 transitions. [2019-10-22 09:00:26,982 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 187 transitions. Word has length 17 [2019-10-22 09:00:26,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:26,983 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 187 transitions. [2019-10-22 09:00:26,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:00:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 187 transitions. [2019-10-22 09:00:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 09:00:26,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:26,985 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:27,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:27,186 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash 216177638, now seen corresponding path program 1 times [2019-10-22 09:00:27,187 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:27,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [661992146] [2019-10-22 09:00:27,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:27,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:27,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:27,280 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:27,300 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [661992146] [2019-10-22 09:00:27,300 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:27,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 09:00:27,300 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865210263] [2019-10-22 09:00:27,302 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:27,302 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:27,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:27,303 INFO L87 Difference]: Start difference. First operand 130 states and 187 transitions. Second operand 5 states. [2019-10-22 09:00:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:27,494 INFO L93 Difference]: Finished difference Result 501 states and 705 transitions. [2019-10-22 09:00:27,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:27,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-22 09:00:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:27,498 INFO L225 Difference]: With dead ends: 501 [2019-10-22 09:00:27,498 INFO L226 Difference]: Without dead ends: 424 [2019-10-22 09:00:27,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2019-10-22 09:00:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 175. [2019-10-22 09:00:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-10-22 09:00:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 251 transitions. [2019-10-22 09:00:27,520 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 251 transitions. Word has length 21 [2019-10-22 09:00:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:27,521 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 251 transitions. [2019-10-22 09:00:27,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 251 transitions. [2019-10-22 09:00:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:27,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:27,522 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:27,723 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:27,723 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1163788538, now seen corresponding path program 1 times [2019-10-22 09:00:27,724 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:27,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [116015325] [2019-10-22 09:00:27,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:27,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:27,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:27,841 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:27,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [116015325] [2019-10-22 09:00:27,858 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:27,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 09:00:27,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319184961] [2019-10-22 09:00:27,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:00:27,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:27,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:00:27,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:00:27,862 INFO L87 Difference]: Start difference. First operand 175 states and 251 transitions. Second operand 5 states. [2019-10-22 09:00:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:28,018 INFO L93 Difference]: Finished difference Result 347 states and 483 transitions. [2019-10-22 09:00:28,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:00:28,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 09:00:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:28,021 INFO L225 Difference]: With dead ends: 347 [2019-10-22 09:00:28,022 INFO L226 Difference]: Without dead ends: 274 [2019-10-22 09:00:28,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-10-22 09:00:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 257. [2019-10-22 09:00:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-10-22 09:00:28,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 366 transitions. [2019-10-22 09:00:28,048 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 366 transitions. Word has length 25 [2019-10-22 09:00:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:28,049 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 366 transitions. [2019-10-22 09:00:28,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:00:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 366 transitions. [2019-10-22 09:00:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:28,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:28,051 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:28,252 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:28,252 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash 611218824, now seen corresponding path program 1 times [2019-10-22 09:00:28,253 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:28,253 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [925392542] [2019-10-22 09:00:28,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:28,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:00:28,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:28,366 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:28,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925392542] [2019-10-22 09:00:28,446 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:28,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 09:00:28,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249505590] [2019-10-22 09:00:28,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:00:28,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:28,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:00:28,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:28,448 INFO L87 Difference]: Start difference. First operand 257 states and 366 transitions. Second operand 8 states. [2019-10-22 09:00:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:30,530 INFO L93 Difference]: Finished difference Result 1091 states and 1532 transitions. [2019-10-22 09:00:30,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 09:00:30,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 09:00:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:30,535 INFO L225 Difference]: With dead ends: 1091 [2019-10-22 09:00:30,535 INFO L226 Difference]: Without dead ends: 974 [2019-10-22 09:00:30,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:00:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2019-10-22 09:00:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 277. [2019-10-22 09:00:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-10-22 09:00:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 392 transitions. [2019-10-22 09:00:30,569 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 392 transitions. Word has length 25 [2019-10-22 09:00:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:30,570 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 392 transitions. [2019-10-22 09:00:30,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:00:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 392 transitions. [2019-10-22 09:00:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:00:30,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:30,572 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:30,773 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:30,773 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash 611278406, now seen corresponding path program 1 times [2019-10-22 09:00:30,774 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:30,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1601852638] [2019-10-22 09:00:30,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:30,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:00:30,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:30,863 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:30,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1601852638] [2019-10-22 09:00:30,868 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:30,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-10-22 09:00:30,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280312858] [2019-10-22 09:00:30,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:30,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:30,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:30,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:30,869 INFO L87 Difference]: Start difference. First operand 277 states and 392 transitions. Second operand 6 states. [2019-10-22 09:00:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:31,065 INFO L93 Difference]: Finished difference Result 377 states and 518 transitions. [2019-10-22 09:00:31,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:00:31,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-10-22 09:00:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:31,067 INFO L225 Difference]: With dead ends: 377 [2019-10-22 09:00:31,067 INFO L226 Difference]: Without dead ends: 310 [2019-10-22 09:00:31,068 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:00:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-10-22 09:00:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 257. [2019-10-22 09:00:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2019-10-22 09:00:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 361 transitions. [2019-10-22 09:00:31,084 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 361 transitions. Word has length 25 [2019-10-22 09:00:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:31,084 INFO L462 AbstractCegarLoop]: Abstraction has 257 states and 361 transitions. [2019-10-22 09:00:31,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 361 transitions. [2019-10-22 09:00:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:00:31,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:31,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:31,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:31,292 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash -873114857, now seen corresponding path program 1 times [2019-10-22 09:00:31,293 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:31,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1322307524] [2019-10-22 09:00:31,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:31,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:00:31,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:31,394 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:31,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322307524] [2019-10-22 09:00:31,435 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:31,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-10-22 09:00:31,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020079382] [2019-10-22 09:00:31,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 09:00:31,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 09:00:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:00:31,437 INFO L87 Difference]: Start difference. First operand 257 states and 361 transitions. Second operand 10 states. [2019-10-22 09:00:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:31,917 INFO L93 Difference]: Finished difference Result 502 states and 693 transitions. [2019-10-22 09:00:31,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:00:31,918 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-10-22 09:00:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:31,919 INFO L225 Difference]: With dead ends: 502 [2019-10-22 09:00:31,919 INFO L226 Difference]: Without dead ends: 439 [2019-10-22 09:00:31,920 INFO L600 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 [2019-10-22 09:00:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-22 09:00:31,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 267. [2019-10-22 09:00:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-10-22 09:00:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 376 transitions. [2019-10-22 09:00:31,935 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 376 transitions. Word has length 29 [2019-10-22 09:00:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:31,935 INFO L462 AbstractCegarLoop]: Abstraction has 267 states and 376 transitions. [2019-10-22 09:00:31,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 09:00:31,935 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 376 transitions. [2019-10-22 09:00:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:00:31,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:31,936 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:32,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:32,137 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:32,137 INFO L82 PathProgramCache]: Analyzing trace with hash -871267815, now seen corresponding path program 1 times [2019-10-22 09:00:32,138 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:32,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1173926979] [2019-10-22 09:00:32,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:00:32,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:32,223 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:32,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1173926979] [2019-10-22 09:00:32,244 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:32,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 09:00:32,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881949186] [2019-10-22 09:00:32,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:32,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:32,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:32,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:32,246 INFO L87 Difference]: Start difference. First operand 267 states and 376 transitions. Second operand 6 states. [2019-10-22 09:00:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:32,309 INFO L93 Difference]: Finished difference Result 514 states and 709 transitions. [2019-10-22 09:00:32,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:32,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-10-22 09:00:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:32,311 INFO L225 Difference]: With dead ends: 514 [2019-10-22 09:00:32,311 INFO L226 Difference]: Without dead ends: 427 [2019-10-22 09:00:32,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:00:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-22 09:00:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2019-10-22 09:00:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-10-22 09:00:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 480 transitions. [2019-10-22 09:00:32,337 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 480 transitions. Word has length 29 [2019-10-22 09:00:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:32,337 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 480 transitions. [2019-10-22 09:00:32,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 480 transitions. [2019-10-22 09:00:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 09:00:32,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:32,338 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:32,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:32,539 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:32,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1737423153, now seen corresponding path program 1 times [2019-10-22 09:00:32,540 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:32,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [268846765] [2019-10-22 09:00:32,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:32,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:00:32,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:32,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:00:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:32,667 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:32,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [268846765] [2019-10-22 09:00:32,702 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:32,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 09:00:32,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355145253] [2019-10-22 09:00:32,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:32,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:32,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:32,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:32,704 INFO L87 Difference]: Start difference. First operand 349 states and 480 transitions. Second operand 6 states. [2019-10-22 09:00:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:32,902 INFO L93 Difference]: Finished difference Result 480 states and 656 transitions. [2019-10-22 09:00:32,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:00:32,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2019-10-22 09:00:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:32,905 INFO L225 Difference]: With dead ends: 480 [2019-10-22 09:00:32,905 INFO L226 Difference]: Without dead ends: 478 [2019-10-22 09:00:32,906 INFO L600 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 [2019-10-22 09:00:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-10-22 09:00:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 347. [2019-10-22 09:00:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-10-22 09:00:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 473 transitions. [2019-10-22 09:00:32,932 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 473 transitions. Word has length 29 [2019-10-22 09:00:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:32,933 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 473 transitions. [2019-10-22 09:00:32,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 473 transitions. [2019-10-22 09:00:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 09:00:32,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:32,934 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:33,135 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:33,135 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1174763763, now seen corresponding path program 1 times [2019-10-22 09:00:33,136 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:33,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [328392225] [2019-10-22 09:00:33,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:00:33,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:00:33,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:00:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:33,193 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:00:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:00:33,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [328392225] [2019-10-22 09:00:33,210 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:00:33,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 09:00:33,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083382688] [2019-10-22 09:00:33,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:00:33,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:00:33,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:00:33,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:00:33,211 INFO L87 Difference]: Start difference. First operand 347 states and 473 transitions. Second operand 6 states. [2019-10-22 09:00:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:00:33,312 INFO L93 Difference]: Finished difference Result 406 states and 547 transitions. [2019-10-22 09:00:33,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:00:33,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-22 09:00:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:00:33,314 INFO L225 Difference]: With dead ends: 406 [2019-10-22 09:00:33,314 INFO L226 Difference]: Without dead ends: 401 [2019-10-22 09:00:33,314 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:00:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2019-10-22 09:00:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 347. [2019-10-22 09:00:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-10-22 09:00:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 470 transitions. [2019-10-22 09:00:33,338 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 470 transitions. Word has length 30 [2019-10-22 09:00:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:00:33,338 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 470 transitions. [2019-10-22 09:00:33,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:00:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 470 transitions. [2019-10-22 09:00:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 09:00:33,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:00:33,339 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:00:33,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:33,540 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:00:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:00:33,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1078465644, now seen corresponding path program 1 times [2019-10-22 09:00:33,541 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:00:33,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [364362122] [2019-10-22 09:00:33,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/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 [2019-10-22 09:00:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:00:33,756 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 09:00:33,756 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:00:33,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:00:33,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:00:33 BoogieIcfgContainer [2019-10-22 09:00:33,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:00:33,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:00:33,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:00:33,987 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:00:33,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:00:26" (3/4) ... [2019-10-22 09:00:33,989 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:00:34,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c6641500-2159-48a4-b2b2-b95858628254/bin/uautomizer/witness.graphml [2019-10-22 09:00:34,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:00:34,059 INFO L168 Benchmark]: Toolchain (without parser) took 9147.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 951.0 MB in the beginning and 916.4 MB in the end (delta: 34.6 MB). Peak memory consumption was 243.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:34,059 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:34,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:34,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:34,063 INFO L168 Benchmark]: Boogie Preprocessor took 35.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:00:34,063 INFO L168 Benchmark]: RCFGBuilder took 614.27 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: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:34,063 INFO L168 Benchmark]: TraceAbstraction took 7918.83 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 923.8 MB in the end (delta: 166.8 MB). Peak memory consumption was 232.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:00:34,064 INFO L168 Benchmark]: Witness Printer took 70.15 ms. Allocated memory is still 1.2 GB. Free memory was 916.4 MB in the beginning and 916.4 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-10-22 09:00:34,065 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 438.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.61 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 614.27 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: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7918.83 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 923.8 MB in the end (delta: 166.8 MB). Peak memory consumption was 232.9 MB. Max. memory is 11.5 GB. * Witness Printer took 70.15 ms. Allocated memory is still 1.2 GB. Free memory was 916.4 MB in the beginning and 916.4 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add ; [L223] unsigned int zero ; [L224] int sa ; [L225] int sb ; [L226] int tmp ; [L227] int tmp___0 ; [L228] int tmp___1 ; [L229] int tmp___2 ; [L230] int tmp___3 ; [L231] int tmp___4 ; [L232] int tmp___5 ; [L233] int tmp___6 ; [L234] int tmp___7 ; [L235] int tmp___8 ; [L236] int tmp___9 ; [L237] int __retres23 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L241] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L242] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L243] b = base2flt(mb, eb) [L245] COND FALSE !(a < zero) [L248] COND TRUE a > zero [L249] tmp = 1 [L253] sa = tmp [L255] COND FALSE !(b < zero) [L258] COND TRUE b > zero [L259] tmp___0 = 1 [L263] sb = tmp___0 [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 6 error locations. Result: UNSAFE, OverallTime: 7.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1327 SDtfs, 3512 SDslu, 5147 SDs, 0 SdLazy, 1110 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 402 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1700 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 442 ConstructedInterpolants, 6 QuantifiedInterpolants, 19474 SizeOfPredicates, 46 NumberOfNonLiveVariables, 522 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...