./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float22.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/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 08947af3b6f9b8a272faa540a059213a9b1de888 ................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float22.i -s /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/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 08947af3b6f9b8a272faa540a059213a9b1de888 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:58:51,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:58:51,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:58:51,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:58:51,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:58:51,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:58:51,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:58:51,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:58:51,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:58:51,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:58:51,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:58:51,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:58:51,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:58:51,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:58:51,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:58:51,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:58:51,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:58:51,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:58:51,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:58:51,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:58:51,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:58:51,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:58:51,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:58:51,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:58:51,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:58:51,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:58:51,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:58:51,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:58:51,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:58:51,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:58:51,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:58:51,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:58:51,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:58:51,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:58:51,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:58:51,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:58:51,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:58:51,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:58:51,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:58:51,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:58:51,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:58:51,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:58:51,150 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:58:51,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:58:51,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:58:51,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:58:51,151 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:58:51,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:58:51,151 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:58:51,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:58:51,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:58:51,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:58:51,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:58:51,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:58:51,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:58:51,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:58:51,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-12-07 13:58:51,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:58:51,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:58:51,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:58:51,268 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:58:51,269 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:58:51,269 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 13:58:51,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/8e110cafe/74609a213fdc4256bf075565646efe05/FLAG11019a8b3 [2019-12-07 13:58:51,646 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:58:51,647 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 13:58:51,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/8e110cafe/74609a213fdc4256bf075565646efe05/FLAG11019a8b3 [2019-12-07 13:58:52,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/8e110cafe/74609a213fdc4256bf075565646efe05 [2019-12-07 13:58:52,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:58:52,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:58:52,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:58:52,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:58:52,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:58:52,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ad59ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52, skipping insertion in model container [2019-12-07 13:58:52,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:58:52,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:58:52,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:58:52,258 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:58:52,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:58:52,300 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:58:52,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52 WrapperNode [2019-12-07 13:58:52,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:58:52,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:58:52,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:58:52,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:58:52,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:58:52,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:58:52,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:58:52,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:58:52,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... [2019-12-07 13:58:52,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:58:52,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:58:52,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:58:52,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:58:52,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:58:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 13:58:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:58:52,672 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:58:52,672 INFO L287 CfgBuilder]: Removed 26 assume(true) statements. [2019-12-07 13:58:52,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:58:52 BoogieIcfgContainer [2019-12-07 13:58:52,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:58:52,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:58:52,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:58:52,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:58:52,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:58:52" (1/3) ... [2019-12-07 13:58:52,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1930cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:58:52, skipping insertion in model container [2019-12-07 13:58:52,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:52" (2/3) ... [2019-12-07 13:58:52,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1930cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:58:52, skipping insertion in model container [2019-12-07 13:58:52,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:58:52" (3/3) ... [2019-12-07 13:58:52,678 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-12-07 13:58:52,684 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:58:52,689 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 13:58:52,696 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:58:52,711 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:58:52,711 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:58:52,711 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:58:52,711 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:58:52,711 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:58:52,711 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:58:52,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:58:52,711 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:58:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 13:58:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 13:58:52,724 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:58:52,724 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 13:58:52,725 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:58:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:58:52,728 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-12-07 13:58:52,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:58:52,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734792682] [2019-12-07 13:58:52,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:58:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:58:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:58:52,879 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:58:52,880 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:58:52,887 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,887 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,888 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,888 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,888 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,888 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,888 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,888 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,889 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,889 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,889 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,889 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,889 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,889 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,890 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled [2019-12-07 13:58:52,894 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-12-07 13:58:52,895 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-12-07 13:58:52,895 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-12-07 13:58:52,895 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.mantissa [2019-12-07 13:58:52,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.negative [2019-12-07 13:58:52,897 WARN L1295 BoogieBacktranslator]: unknown boogie variable returnsStructure_#res.ieee.exponent [2019-12-07 13:58:52,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:58:52 BoogieIcfgContainer [2019-12-07 13:58:52,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:58:52,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:58:52,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:58:52,902 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:58:52,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:58:52" (3/4) ... [2019-12-07 13:58:52,905 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:58:52,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:58:52,907 INFO L168 Benchmark]: Toolchain (without parser) took 821.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -88.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:58:52,907 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:58:52,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:58:52,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:58:52,909 INFO L168 Benchmark]: Boogie Preprocessor took 27.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:58:52,909 INFO L168 Benchmark]: RCFGBuilder took 310.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:58:52,910 INFO L168 Benchmark]: TraceAbstraction took 228.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:58:52,910 INFO L168 Benchmark]: Witness Printer took 3.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:58:52,912 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 214.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 310.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 228.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.36 ms. Allocated memory is still 1.1 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList returnsStructure_#res : ~ieee754_float~0 not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.mantissa - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.negative - GenericResult: Unfinished Backtranslation unknown boogie variable returnsStructure_#res.ieee.exponent * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 133]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 119. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] [L133] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L133] __VERIFIER_error() VAL [unknown-returnsStructure_#res.ieee.exponent-unknown=0, unknown-returnsStructure_#res.ieee.mantissa-unknown=0, unknown-returnsStructure_#res.ieee.negative-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 13:58:54,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:58:54,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:58:54,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:58:54,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:58:54,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:58:54,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:58:54,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:58:54,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:58:54,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:58:54,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:58:54,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:58:54,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:58:54,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:58:54,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:58:54,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:58:54,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:58:54,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:58:54,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:58:54,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:58:54,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:58:54,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:58:54,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:58:54,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:58:54,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:58:54,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:58:54,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:58:54,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:58:54,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:58:54,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:58:54,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:58:54,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:58:54,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:58:54,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:58:54,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:58:54,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:58:54,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:58:54,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:58:54,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:58:54,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:58:54,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:58:54,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 13:58:54,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:58:54,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:58:54,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:58:54,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:58:54,411 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:58:54,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:58:54,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:58:54,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:58:54,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:58:54,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:58:54,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:58:54,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:58:54,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:58:54,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:58:54,413 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 13:58:54,414 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 13:58:54,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:58:54,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:58:54,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:58:54,414 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/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 -> 08947af3b6f9b8a272faa540a059213a9b1de888 [2019-12-07 13:58:54,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:58:54,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:58:54,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:58:54,597 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:58:54,597 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:58:54,598 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 13:58:54,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/7694ca69d/aa8762f7106d4fc8859874474683bf78/FLAGd8c7584c9 [2019-12-07 13:58:54,972 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:58:54,973 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/sv-benchmarks/c/floats-cbmc-regression/float22.i [2019-12-07 13:58:54,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/7694ca69d/aa8762f7106d4fc8859874474683bf78/FLAGd8c7584c9 [2019-12-07 13:58:54,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/data/7694ca69d/aa8762f7106d4fc8859874474683bf78 [2019-12-07 13:58:54,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:58:54,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:58:54,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:58:54,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:58:54,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:58:54,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:58:54" (1/1) ... [2019-12-07 13:58:54,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798682e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:54, skipping insertion in model container [2019-12-07 13:58:54,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:58:54" (1/1) ... [2019-12-07 13:58:55,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:58:55,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:58:55,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:58:55,150 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:58:55,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:58:55,198 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:58:55,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55 WrapperNode [2019-12-07 13:58:55,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:58:55,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:58:55,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:58:55,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:58:55,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:58:55,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:58:55,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:58:55,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:58:55,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... [2019-12-07 13:58:55,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:58:55,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:58:55,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:58:55,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:58:55,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-12-07 13:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 13:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:58:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 13:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:58:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 13:58:55,623 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:58:55,624 INFO L287 CfgBuilder]: Removed 26 assume(true) statements. [2019-12-07 13:58:55,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:58:55 BoogieIcfgContainer [2019-12-07 13:58:55,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:58:55,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:58:55,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:58:55,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:58:55,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:58:54" (1/3) ... [2019-12-07 13:58:55,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:58:55, skipping insertion in model container [2019-12-07 13:58:55,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:58:55" (2/3) ... [2019-12-07 13:58:55,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:58:55, skipping insertion in model container [2019-12-07 13:58:55,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:58:55" (3/3) ... [2019-12-07 13:58:55,629 INFO L109 eAbstractionObserver]: Analyzing ICFG float22.i [2019-12-07 13:58:55,635 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:58:55,639 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 13:58:55,647 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:58:55,661 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:58:55,661 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:58:55,661 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:58:55,661 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:58:55,661 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:58:55,661 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:58:55,662 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:58:55,662 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:58:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 13:58:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 13:58:55,674 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:58:55,674 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 13:58:55,674 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:58:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:58:55,678 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-12-07 13:58:55,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:58:55,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467645904] [2019-12-07 13:58:55,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 13:58:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:58:55,784 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 13:58:55,789 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:58:55,896 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-12-07 13:58:55,896 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-12-07 13:58:55,897 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,018 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-12-07 13:58:56,020 INFO L614 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-12-07 13:58:56,034 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-12-07 13:58:56,035 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,056 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:58:56,057 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:58:56,058 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-12-07 13:58:56,159 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:58:56,159 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-12-07 13:58:56,160 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,301 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2019-12-07 13:58:56,301 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:58:56,493 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-12-07 13:58:56,494 INFO L343 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-12-07 13:58:56,494 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-12-07 13:58:56,496 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,667 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-12-07 13:58:56,668 INFO L614 ElimStorePlain]: treesize reduction 44, result has 75.0 percent of original size [2019-12-07 13:58:56,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:58:56,675 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 13:58:56,675 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:164, output treesize:119 [2019-12-07 13:58:56,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:58:56,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:58:56,746 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:58:56,818 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:58:56,818 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 73 [2019-12-07 13:58:56,820 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,824 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:58:56,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 40 [2019-12-07 13:58:56,829 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,868 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-12-07 13:58:56,868 INFO L534 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:58:56,869 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:264, output treesize:25 [2019-12-07 13:58:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:58:56,886 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:59:02,944 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 67 [2019-12-07 13:59:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:59:02,957 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467645904] [2019-12-07 13:59:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:59:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 13:59:02,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205922605] [2019-12-07 13:59:02,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 13:59:02,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:59:02,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 13:59:02,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2019-12-07 13:59:02,971 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 8 states. [2019-12-07 13:59:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:59:03,363 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2019-12-07 13:59:03,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:59:03,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2019-12-07 13:59:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:59:03,373 INFO L225 Difference]: With dead ends: 57 [2019-12-07 13:59:03,373 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 13:59:03,375 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2019-12-07 13:59:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 13:59:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 13:59:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 13:59:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-12-07 13:59:03,399 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 6 [2019-12-07 13:59:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:59:03,400 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-12-07 13:59:03,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 13:59:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-12-07 13:59:03,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:59:03,401 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:59:03,401 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:59:03,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 13:59:03,602 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:59:03,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:59:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2061469933, now seen corresponding path program 1 times [2019-12-07 13:59:03,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:59:03,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530990103] [2019-12-07 13:59:03,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 13:59:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:59:03,856 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 25 conjunts are in the unsatisfiable core [2019-12-07 13:59:03,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:59:03,864 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-12-07 13:59:03,866 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:03,868 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:03,868 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:59:03,870 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:03,870 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:59:03,870 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-12-07 13:59:03,941 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-12-07 13:59:03,942 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-12-07 13:59:03,942 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,043 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-12-07 13:59:04,044 INFO L614 ElimStorePlain]: treesize reduction 36, result has 61.7 percent of original size [2019-12-07 13:59:04,054 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-12-07 13:59:04,054 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,071 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:04,072 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:59:04,072 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:70, output treesize:62 [2019-12-07 13:59:04,169 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:04,170 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-12-07 13:59:04,171 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,320 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2019-12-07 13:59:04,320 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:04,481 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-12-07 13:59:04,482 INFO L343 Elim1Store]: treesize reduction 74, result has 54.3 percent of original size [2019-12-07 13:59:04,482 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 140 [2019-12-07 13:59:04,483 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,684 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-12-07 13:59:04,684 INFO L614 ElimStorePlain]: treesize reduction 44, result has 74.0 percent of original size [2019-12-07 13:59:04,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:04,687 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 13:59:04,687 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:157, output treesize:112 [2019-12-07 13:59:04,687 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:04,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:04,741 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:59:04,763 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 42 [2019-12-07 13:59:04,764 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,771 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:59:04,800 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:04,800 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 75 [2019-12-07 13:59:04,801 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,841 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-12-07 13:59:04,842 INFO L534 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:59:04,842 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:260, output treesize:25 [2019-12-07 13:59:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:59:04,866 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:59:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:59:11,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530990103] [2019-12-07 13:59:11,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:59:11,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-12-07 13:59:11,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57450206] [2019-12-07 13:59:11,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 13:59:11,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 13:59:11,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 13:59:11,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2019-12-07 13:59:11,667 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 9 states. [2019-12-07 13:59:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:59:12,347 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-12-07 13:59:12,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:59:12,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-12-07 13:59:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:59:12,351 INFO L225 Difference]: With dead ends: 25 [2019-12-07 13:59:12,351 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 13:59:12,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2019-12-07 13:59:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 13:59:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 13:59:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 13:59:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 13:59:12,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 11 [2019-12-07 13:59:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:59:12,355 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 13:59:12,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 13:59:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 13:59:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:59:12,356 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:59:12,356 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:59:12,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 13:59:12,558 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:59:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:59:12,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2079313263, now seen corresponding path program 1 times [2019-12-07 13:59:12,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 13:59:12,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446724930] [2019-12-07 13:59:12,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 13:59:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:59:12,903 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 13:59:12,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:59:12,909 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2019-12-07 13:59:12,911 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:12,912 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:12,913 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:59:12,914 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:12,914 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:59:12,915 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:48, output treesize:6 [2019-12-07 13:59:12,972 INFO L343 Elim1Store]: treesize reduction 16, result has 74.6 percent of original size [2019-12-07 13:59:12,972 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 70 [2019-12-07 13:59:12,972 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,006 INFO L614 ElimStorePlain]: treesize reduction 36, result has 35.7 percent of original size [2019-12-07 13:59:13,006 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 13:59:13,007 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:20 [2019-12-07 13:59:13,135 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-12-07 13:59:13,135 INFO L343 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-12-07 13:59:13,135 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-12-07 13:59:13,136 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,183 INFO L614 ElimStorePlain]: treesize reduction 50, result has 33.3 percent of original size [2019-12-07 13:59:13,183 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 13:59:13,184 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:25 [2019-12-07 13:59:13,304 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-12-07 13:59:13,305 INFO L343 Elim1Store]: treesize reduction 16, result has 83.7 percent of original size [2019-12-07 13:59:13,305 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 103 [2019-12-07 13:59:13,306 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,444 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-12-07 13:59:13,444 INFO L614 ElimStorePlain]: treesize reduction 50, result has 55.8 percent of original size [2019-12-07 13:59:13,456 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2019-12-07 13:59:13,456 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,476 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:13,477 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 13:59:13,477 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:73, output treesize:67 [2019-12-07 13:59:13,565 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:13,566 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 57 [2019-12-07 13:59:13,566 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,685 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-12-07 13:59:13,686 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:13,745 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:13,745 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 122 [2019-12-07 13:59:13,746 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,864 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-12-07 13:59:13,865 INFO L614 ElimStorePlain]: treesize reduction 44, result has 70.9 percent of original size [2019-12-07 13:59:13,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:13,866 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 13:59:13,866 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:131, output treesize:112 [2019-12-07 13:59:13,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:13,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:13,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:59:13,936 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 42 [2019-12-07 13:59:13,937 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:13,941 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 13:59:13,968 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:13,968 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 101 treesize of output 73 [2019-12-07 13:59:13,969 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:14,008 INFO L614 ElimStorePlain]: treesize reduction 50, result has 42.5 percent of original size [2019-12-07 13:59:14,008 INFO L534 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 13:59:14,008 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:232, output treesize:25 [2019-12-07 13:59:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:59:14,033 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:59:16,374 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:16,374 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 761 treesize of output 686 [2019-12-07 13:59:16,397 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:16,397 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 38 [2019-12-07 13:59:16,397 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 13:59:16,568 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2019-12-07 13:59:16,569 INFO L614 ElimStorePlain]: treesize reduction 523, result has 20.6 percent of original size [2019-12-07 13:59:16,662 INFO L343 Elim1Store]: treesize reduction 45, result has 58.3 percent of original size [2019-12-07 13:59:16,662 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 104 treesize of output 130 [2019-12-07 13:59:16,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,698 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 13:59:16,698 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 128 [2019-12-07 13:59:16,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,711 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,728 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:59:16,738 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_76, v_arrayElimCell_77], 3=[v_arrayElimCell_75]} [2019-12-07 13:59:16,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446724930] [2019-12-07 13:59:16,743 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@3be61a15 [2019-12-07 13:59:16,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [459190717] [2019-12-07 13:59:16,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/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 [2019-12-07 13:59:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:59:17,397 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2019-12-07 13:59:17,398 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@3be61a15 [2019-12-07 13:59:17,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554163895] [2019-12-07 13:59:17,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52fe17ac-c0e9-4109-ae26-62eace889084/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:59:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:59:17,475 INFO L264 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-07 13:59:17,475 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@3be61a15 [2019-12-07 13:59:17,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:59:17,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 13:59:17,476 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 13:59:17,476 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:59:18,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:59:18,106 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 13:59:18,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:59:18 BoogieIcfgContainer [2019-12-07 13:59:18,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:59:18,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:59:18,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:59:18,107 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:59:18,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:58:55" (3/4) ... [2019-12-07 13:59:18,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:59:18,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:59:18,111 INFO L168 Benchmark]: Toolchain (without parser) took 23120.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 952.4 MB in the beginning and 879.1 MB in the end (delta: 73.3 MB). Peak memory consumption was 275.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:59:18,112 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:59:18,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.54 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:59:18,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -188.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:59:18,113 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:59:18,113 INFO L168 Benchmark]: RCFGBuilder took 329.22 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:59:18,114 INFO L168 Benchmark]: TraceAbstraction took 22481.53 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 879.1 MB in the end (delta: 206.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:59:18,114 INFO L168 Benchmark]: Witness Printer took 3.31 ms. Allocated memory is still 1.2 GB. Free memory is still 879.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:59:18,116 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 207.54 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 936.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -188.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.43 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 329.22 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22481.53 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 879.1 MB in the end (delta: 206.2 MB). Peak memory consumption was 272.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.31 ms. Allocated memory is still 1.2 GB. Free memory is still 879.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L128] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L130] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L131] f2 = returnsStructure(1) [L133] EXPR f1.ieee.negative [L133] EXPR f2.ieee.negative [L133] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L135] return; [L135] return; [L140] ieee754_float f1, f2; [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L142] f1 = returnsStructure(0) [L117] ieee754_float c; [L119] c.ieee.negative = index & 0x1 [L120] c.ieee.exponent = 0 [L121] c.ieee.mantissa = 0 [L123] return c; [L123] return c; [L143] f2 = returnsStructure(1) [L145] EXPR f1.ieee.negative [L145] EXPR f2.ieee.negative [L145] COND FALSE !(!(f1.ieee.negative != f2.ieee.negative)) [L107] ieee754_float c; [L109] c.ieee.negative = index & 0x1 [L110] c.ieee.exponent = 0 [L111] c.ieee.mantissa = 0 [L113] EXPR c.f [L113] return c.f; [L113] return c.f; [L147] f1.f = returnsField(0) [L107] ieee754_float c; [L109] c.ieee.negative = index & 0x1 [L110] c.ieee.exponent = 0 [L111] c.ieee.mantissa = 0 [L113] EXPR c.f [L113] return c.f; [L113] return c.f; [L148] f2.f = returnsField(1) [L150] EXPR f1.ieee.negative [L150] EXPR f2.ieee.negative [L150] COND TRUE !(f1.ieee.negative != f2.ieee.negative) [L150] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Result: UNKNOWN, OverallTime: 22.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 13 SDslu, 118 SDs, 0 SdLazy, 102 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 8 QuantifiedInterpolants, 8370 SizeOfPredicates, 50 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...