./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/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 c87f23af740954e6de1a94dd09957e85cd60c58b ....................................................................................................................................................................................................................... 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_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/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 c87f23af740954e6de1a94dd09957e85cd60c58b ....................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:53:21,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:21,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:21,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:21,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:21,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:21,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:21,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:21,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:21,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:21,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:21,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:21,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:21,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:21,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:21,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:21,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:21,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:21,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:21,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:21,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:21,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:21,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:21,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:21,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:21,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:21,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:21,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:21,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:21,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:21,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:21,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:21,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:21,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:21,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:21,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:21,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:21,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:21,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:21,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:21,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:21,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:53:21,344 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:21,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:21,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:21,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:21,346 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:21,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:21,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:21,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:21,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:21,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:21,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:21,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:21,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:21,347 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:21,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:21,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:21,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:21,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:21,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:21,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:21,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:21,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:21,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:21,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:21,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:21,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:53:21,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:53:21,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:21,353 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_1373112a-e6f0-4605-8304-7104ce1f39e3/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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-25 08:53:21,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:21,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:21,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:21,518 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:21,519 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:21,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-25 08:53:21,579 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/4946a4c79/6fb6003fbfa84f9baae4b0f82200afc7/FLAGa38b1d8dd [2019-11-25 08:53:21,951 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:21,952 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-25 08:53:21,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/4946a4c79/6fb6003fbfa84f9baae4b0f82200afc7/FLAGa38b1d8dd [2019-11-25 08:53:21,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/4946a4c79/6fb6003fbfa84f9baae4b0f82200afc7 [2019-11-25 08:53:21,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:21,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:21,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:21,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:21,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:21,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:21" (1/1) ... [2019-11-25 08:53:21,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407c053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:21, skipping insertion in model container [2019-11-25 08:53:21,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:21" (1/1) ... [2019-11-25 08:53:21,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:22,010 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:22,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:22,174 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:22,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:22,263 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:22,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22 WrapperNode [2019-11-25 08:53:22,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:22,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:22,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:22,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:22,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:22,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:22,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:22,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:22,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... [2019-11-25 08:53:22,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:22,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:22,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:22,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:22,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:22,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:22,538 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:22,538 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-25 08:53:22,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:22 BoogieIcfgContainer [2019-11-25 08:53:22,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:22,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:22,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:22,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:22,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:21" (1/3) ... [2019-11-25 08:53:22,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628fa564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:22, skipping insertion in model container [2019-11-25 08:53:22,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:22" (2/3) ... [2019-11-25 08:53:22,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@628fa564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:22, skipping insertion in model container [2019-11-25 08:53:22,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:22" (3/3) ... [2019-11-25 08:53:22,548 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-25 08:53:22,557 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:22,563 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-25 08:53:22,573 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-25 08:53:22,599 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:22,599 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:22,600 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:22,600 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:22,600 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:22,600 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:22,600 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:22,601 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-25 08:53:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-25 08:53:22,624 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:22,624 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-25 08:53:22,625 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:22,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:22,631 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-25 08:53:22,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:22,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141742468] [2019-11-25 08:53:22,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:22,737 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:22,738 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:53:22,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:22 BoogieIcfgContainer [2019-11-25 08:53:22,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:22,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:22,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:22,752 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:22,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:22" (3/4) ... [2019-11-25 08:53:22,755 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:53:22,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:22,760 INFO L168 Benchmark]: Toolchain (without parser) took 780.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -151.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:22,761 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:22,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:22,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:22,764 INFO L168 Benchmark]: Boogie Preprocessor took 14.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:22,765 INFO L168 Benchmark]: RCFGBuilder took 231.79 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:22,766 INFO L168 Benchmark]: TraceAbstraction took 210.47 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:22,767 INFO L168 Benchmark]: Witness Printer took 4.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:22,769 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 285.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -183.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.90 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 231.79 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 210.47 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: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; [L23] COND TRUE !(res == 0x1.0p-126f) [L23] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 3 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=15occurred 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, 3 NumberOfCodeBlocks, 3 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 0.1.24-6b5699a [2019-11-25 08:53:24,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:24,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:24,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:24,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:24,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:24,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:24,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:24,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:24,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:24,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:24,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:24,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:24,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:24,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:24,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:24,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:24,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:24,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:24,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:24,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:24,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:24,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:24,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:24,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:24,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:24,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:24,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:24,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:24,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:24,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:24,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:24,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:24,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:24,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:24,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:24,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:24,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:24,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:24,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:24,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:24,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:53:24,712 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:24,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:24,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:24,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:24,718 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:24,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:24,719 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:24,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:24,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:24,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:24,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:24,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:24,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:53:24,721 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:53:24,722 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:53:24,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:24,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:24,723 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:24,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:24,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:24,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:24,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:24,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:24,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:24,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:24,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:24,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:24,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:53:24,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:53:24,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:24,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:53:24,727 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_1373112a-e6f0-4605-8304-7104ce1f39e3/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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-25 08:53:24,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:25,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:25,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:25,022 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:25,023 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:25,024 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-25 08:53:25,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/65fef79cf/39a99bd0e4c940ee8f272f8472a63f6d/FLAGf3710a604 [2019-11-25 08:53:25,455 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:25,456 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-25 08:53:25,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/65fef79cf/39a99bd0e4c940ee8f272f8472a63f6d/FLAGf3710a604 [2019-11-25 08:53:25,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/data/65fef79cf/39a99bd0e4c940ee8f272f8472a63f6d [2019-11-25 08:53:25,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:25,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:25,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:25,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:25,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:25,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:25" (1/1) ... [2019-11-25 08:53:25,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4933b9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:25, skipping insertion in model container [2019-11-25 08:53:25,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:25" (1/1) ... [2019-11-25 08:53:25,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:25,942 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:26,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:26,172 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:26,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:26,204 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:26,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26 WrapperNode [2019-11-25 08:53:26,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:26,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:26,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:26,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:26,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:26,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:26,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:26,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:26,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... [2019-11-25 08:53:26,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:26,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:26,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:26,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:26,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:26,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:26,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:27,184 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:27,184 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-25 08:53:27,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:27 BoogieIcfgContainer [2019-11-25 08:53:27,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:27,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:27,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:27,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:27,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:25" (1/3) ... [2019-11-25 08:53:27,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44283cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:27, skipping insertion in model container [2019-11-25 08:53:27,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:26" (2/3) ... [2019-11-25 08:53:27,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44283cbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:27, skipping insertion in model container [2019-11-25 08:53:27,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:27" (3/3) ... [2019-11-25 08:53:27,205 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-25 08:53:27,213 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:27,231 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-25 08:53:27,242 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-25 08:53:27,261 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:27,261 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:27,262 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:27,262 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:27,262 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:27,262 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:27,262 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:27,262 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-25 08:53:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:53:27,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:27,285 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:53:27,286 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2019-11-25 08:53:27,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:27,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515392031] [2019-11-25 08:53:27,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/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 [2019-11-25 08:53:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:27,392 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:53:27,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:27,457 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:27,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515392031] [2019-11-25 08:53:27,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:27,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-25 08:53:27,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337658489] [2019-11-25 08:53:27,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:53:27,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:27,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:53:27,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:27,522 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-25 08:53:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:28,312 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-11-25 08:53:28,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:28,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-25 08:53:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:28,325 INFO L225 Difference]: With dead ends: 27 [2019-11-25 08:53:28,325 INFO L226 Difference]: Without dead ends: 11 [2019-11-25 08:53:28,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-25 08:53:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:53:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:53:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-11-25 08:53:28,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2019-11-25 08:53:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:28,365 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-11-25 08:53:28,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:53:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-11-25 08:53:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:53:28,366 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:28,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:53:28,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:53:28,583 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:28,583 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2019-11-25 08:53:28,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:28,584 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475467496] [2019-11-25 08:53:28,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/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 [2019-11-25 08:53:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:28,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:53:28,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:28,894 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:28,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475467496] [2019-11-25 08:53:28,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:28,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-25 08:53:28,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365088982] [2019-11-25 08:53:28,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:53:28,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:28,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:53:28,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:28,962 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2019-11-25 08:53:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:29,425 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-25 08:53:29,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:29,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-25 08:53:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:29,436 INFO L225 Difference]: With dead ends: 11 [2019-11-25 08:53:29,436 INFO L226 Difference]: Without dead ends: 9 [2019-11-25 08:53:29,436 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-25 08:53:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-25 08:53:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:53:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-11-25 08:53:29,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2019-11-25 08:53:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:29,439 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-11-25 08:53:29,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:53:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-11-25 08:53:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:53:29,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:29,440 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:29,648 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:53:29,649 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:29,649 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2019-11-25 08:53:29,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:29,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584029200] [2019-11-25 08:53:29,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/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 [2019-11-25 08:53:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:29,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:53:29,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:29,951 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:29,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584029200] [2019-11-25 08:53:29,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:29,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-25 08:53:29,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760233428] [2019-11-25 08:53:29,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:53:29,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:29,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:53:29,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:29,986 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2019-11-25 08:53:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:30,578 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-11-25 08:53:30,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:30,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-25 08:53:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:30,583 INFO L225 Difference]: With dead ends: 9 [2019-11-25 08:53:30,583 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:53:30,584 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:53:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:53:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:53:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:53:30,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-25 08:53:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:30,585 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:53:30,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:53:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:53:30,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:53:30,786 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:53:30,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:53:30,798 INFO L444 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2019-11-25 08:53:30,798 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:53:30,798 INFO L444 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-25 08:53:30,798 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-11-25 08:53:30,799 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-25 08:53:30,799 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-25 08:53:30,799 INFO L444 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-11-25 08:53:30,799 INFO L444 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-25 08:53:30,799 INFO L444 ceAbstractionStarter]: For program point L36(lines 1 50) no Hoare annotation was computed. [2019-11-25 08:53:30,799 INFO L444 ceAbstractionStarter]: For program point L3(lines 3 24) no Hoare annotation was computed. [2019-11-25 08:53:30,800 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:53:30,800 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:53:30,800 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:53:30,800 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 34) no Hoare annotation was computed. [2019-11-25 08:53:30,800 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2019-11-25 08:53:30,801 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-11-25 08:53:30,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:30 BoogieIcfgContainer [2019-11-25 08:53:30,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:30,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:30,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:30,811 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:30,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:27" (3/4) ... [2019-11-25 08:53:30,818 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:53:30,831 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-25 08:53:30,831 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-25 08:53:30,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1373112a-e6f0-4605-8304-7104ce1f39e3/bin/uautomizer/witness.graphml [2019-11-25 08:53:30,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:30,867 INFO L168 Benchmark]: Toolchain (without parser) took 4956.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,867 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:30,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -211.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,869 INFO L168 Benchmark]: Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,869 INFO L168 Benchmark]: RCFGBuilder took 883.51 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,870 INFO L168 Benchmark]: TraceAbstraction took 3619.67 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: 61.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,870 INFO L168 Benchmark]: Witness Printer took 58.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:30,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.29 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 944.3 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 77.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 944.3 MB in the beginning and 1.2 GB in the end (delta: -211.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 883.51 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: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3619.67 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: 61.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 11.5 GB. * Witness Printer took 58.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 23]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Result: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 41 SDslu, 0 SDs, 0 SdLazy, 31 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...