./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 30689778d55a79f9fe352193122f8e3d18bcc1bb ................................................................................................................................................................................................................................... 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_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 30689778d55a79f9fe352193122f8e3d18bcc1bb .................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:16:53,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:16:53,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:16:53,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:16:53,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:16:53,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:16:53,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:16:53,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:16:53,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:16:53,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:16:53,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:16:53,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:16:53,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:16:53,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:16:53,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:16:53,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:16:53,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:16:53,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:16:53,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:16:53,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:16:53,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:16:53,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:16:53,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:16:53,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:16:53,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:16:53,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:16:53,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:16:53,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:16:53,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:16:53,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:16:53,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:16:53,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:16:53,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:16:53,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:16:53,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:16:53,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:16:53,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:16:53,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:16:53,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:16:53,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:16:53,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:16:53,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:16:53,721 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:16:53,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:16:53,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:16:53,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:16:53,722 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:16:53,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:16:53,723 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:16:53,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:16:53,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:16:53,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:16:53,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:16:53,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:16:53,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:16:53,724 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:16:53,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:16:53,725 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:16:53,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:16:53,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:16:53,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:16:53,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:16:53,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:16:53,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:16:53,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:16:53,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:16:53,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:16:53,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:16:53,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:16:53,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:16:53,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:16:53,728 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_434498cd-112c-43a7-b4a3-315768c90db4/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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-12-07 17:16:53,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:16:53,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:16:53,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:16:53,854 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:16:53,854 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:16:53,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2019-12-07 17:16:53,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/6fe80a1d7/6f624058f5c0483a8707bc7e8e0019c7/FLAG27e459777 [2019-12-07 17:16:54,192 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:16:54,192 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/sv-benchmarks/c/nla-digbench/freire2.c [2019-12-07 17:16:54,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/6fe80a1d7/6f624058f5c0483a8707bc7e8e0019c7/FLAG27e459777 [2019-12-07 17:16:54,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/6fe80a1d7/6f624058f5c0483a8707bc7e8e0019c7 [2019-12-07 17:16:54,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:16:54,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:16:54,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:16:54,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:16:54,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:16:54,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16fed479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54, skipping insertion in model container [2019-12-07 17:16:54,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:16:54,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:16:54,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:16:54,380 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:16:54,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:16:54,408 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:16:54,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54 WrapperNode [2019-12-07 17:16:54,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:16:54,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:16:54,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:16:54,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:16:54,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:16:54,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:16:54,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:16:54,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:16:54,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... [2019-12-07 17:16:54,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:16:54,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:16:54,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:16:54,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:16:54,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 17:16:54,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:16:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:16:54,639 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:16:54,639 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-12-07 17:16:54,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:16:54 BoogieIcfgContainer [2019-12-07 17:16:54,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:16:54,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:16:54,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:16:54,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:16:54,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:16:54" (1/3) ... [2019-12-07 17:16:54,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e40f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:16:54, skipping insertion in model container [2019-12-07 17:16:54,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:54" (2/3) ... [2019-12-07 17:16:54,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e40f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:16:54, skipping insertion in model container [2019-12-07 17:16:54,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:16:54" (3/3) ... [2019-12-07 17:16:54,644 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-12-07 17:16:54,651 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:16:54,654 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 17:16:54,662 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 17:16:54,676 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:16:54,676 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:16:54,676 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:16:54,676 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:16:54,676 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:16:54,676 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:16:54,677 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:16:54,677 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:16:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-12-07 17:16:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:16:54,691 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:16:54,691 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:16:54,692 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:16:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:16:54,696 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-12-07 17:16:54,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:16:54,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498808879] [2019-12-07 17:16:54,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:16:54,753 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 17:16:54,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280639436] [2019-12-07 17:16:54,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:16:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:16:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:16:54,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:16:54,792 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:16:54,993 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:16:55,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:16:55 BoogieIcfgContainer [2019-12-07 17:16:55,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:16:55,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:16:55,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:16:55,018 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:16:55,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:16:54" (3/4) ... [2019-12-07 17:16:55,024 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:16:55,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:16:55,027 INFO L168 Benchmark]: Toolchain (without parser) took 818.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 944.6 MB in the beginning and 1.0 GB in the end (delta: -90.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:16:55,028 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:16:55,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:16:55,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.67 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 17:16:55,030 INFO L168 Benchmark]: Boogie Preprocessor took 17.22 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:16:55,031 INFO L168 Benchmark]: RCFGBuilder took 184.14 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:16:55,032 INFO L168 Benchmark]: TraceAbstraction took 377.06 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: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 17:16:55,032 INFO L168 Benchmark]: Witness Printer took 6.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:16:55,035 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 201.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -134.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.22 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 184.14 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 377.06 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: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.3s, 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=30occurred 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, 4 NumberOfCodeBlocks, 4 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 17:16:56,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:16:56,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:16:56,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:16:56,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:16:56,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:16:56,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:16:56,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:16:56,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:16:56,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:16:56,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:16:56,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:16:56,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:16:56,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:16:56,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:16:56,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:16:56,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:16:56,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:16:56,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:16:56,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:16:56,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:16:56,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:16:56,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:16:56,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:16:56,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:16:56,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:16:56,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:16:56,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:16:56,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:16:56,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:16:56,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:16:56,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:16:56,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:16:56,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:16:56,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:16:56,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:16:56,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:16:56,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:16:56,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:16:56,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:16:56,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:16:56,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 17:16:56,398 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:16:56,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:16:56,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:16:56,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:16:56,399 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:16:56,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:16:56,400 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:16:56,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:16:56,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:16:56,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:16:56,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:16:56,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:16:56,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:16:56,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:16:56,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 17:16:56,402 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 17:16:56,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:16:56,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:16:56,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 17:16:56,403 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_434498cd-112c-43a7-b4a3-315768c90db4/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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-12-07 17:16:56,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:16:56,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:16:56,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:16:56,578 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:16:56,579 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:16:56,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire2.c [2019-12-07 17:16:56,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/5aea4afa4/65a2e8bf3fc1443fbf0be53a6fe480dd/FLAGfe8e47ed9 [2019-12-07 17:16:57,046 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:16:57,047 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/sv-benchmarks/c/nla-digbench/freire2.c [2019-12-07 17:16:57,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/5aea4afa4/65a2e8bf3fc1443fbf0be53a6fe480dd/FLAGfe8e47ed9 [2019-12-07 17:16:57,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/data/5aea4afa4/65a2e8bf3fc1443fbf0be53a6fe480dd [2019-12-07 17:16:57,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:16:57,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:16:57,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:16:57,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:16:57,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:16:57,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57, skipping insertion in model container [2019-12-07 17:16:57,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:16:57,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:16:57,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:16:57,195 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:16:57,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:16:57,222 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:16:57,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57 WrapperNode [2019-12-07 17:16:57,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:16:57,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:16:57,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:16:57,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:16:57,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:16:57,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:16:57,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:16:57,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:16:57,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... [2019-12-07 17:16:57,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:16:57,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:16:57,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:16:57,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:16:57,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 17:16:57,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:16:57,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:17:05,836 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:17:05,836 INFO L287 CfgBuilder]: Removed 17 assume(true) statements. [2019-12-07 17:17:05,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:17:05 BoogieIcfgContainer [2019-12-07 17:17:05,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:17:05,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:17:05,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:17:05,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:17:05,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:16:57" (1/3) ... [2019-12-07 17:17:05,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233c7c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:17:05, skipping insertion in model container [2019-12-07 17:17:05,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:16:57" (2/3) ... [2019-12-07 17:17:05,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233c7c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:17:05, skipping insertion in model container [2019-12-07 17:17:05,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:17:05" (3/3) ... [2019-12-07 17:17:05,843 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-12-07 17:17:05,850 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:17:05,854 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 17:17:05,862 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 17:17:05,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:17:05,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:17:05,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:17:05,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:17:05,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:17:05,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:17:05,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:17:05,879 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:17:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-12-07 17:17:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 17:17:05,893 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:05,893 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 17:17:05,894 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:17:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:05,897 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-12-07 17:17:05,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:17:05,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324942111] [2019-12-07 17:17:05,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 17:17:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:06,017 WARN L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:17:06,020 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:06,081 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 17:17:06,082 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:17:09,041 WARN L192 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-12-07 17:17:09,053 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 17:17:09,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324942111] [2019-12-07 17:17:09,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:17:09,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-12-07 17:17:09,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445216671] [2019-12-07 17:17:09,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:17:09,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:17:09,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:17:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:17:09,068 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-12-07 17:17:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:17:23,797 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-12-07 17:17:23,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:17:23,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-12-07 17:17:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:17:23,806 INFO L225 Difference]: With dead ends: 67 [2019-12-07 17:17:23,806 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 17:17:23,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:17:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 17:17:23,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-12-07 17:17:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 17:17:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-12-07 17:17:23,844 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-12-07 17:17:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:17:23,844 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-12-07 17:17:23,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:17:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-12-07 17:17:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 17:17:23,845 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:17:23,845 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:17:24,045 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 17:17:24,046 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:17:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:17:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-12-07 17:17:24,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:17:24,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36979349] [2019-12-07 17:17:24,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 17:17:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:17:25,076 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:17:25,077 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:17:25,796 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 17:17:25,796 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 17:17:27,840 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2019-12-07 17:17:29,498 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))))) is different from false [2019-12-07 17:17:29,877 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 17:17:29,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36979349] [2019-12-07 17:17:29,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:17:29,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-12-07 17:17:29,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445147496] [2019-12-07 17:17:29,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:17:29,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 17:17:29,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:17:29,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2019-12-07 17:17:29,879 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-12-07 17:17:35,230 WARN L192 SmtUtils]: Spent 2.74 s on a formula simplification that was a NOOP. DAG size: 14 [2019-12-07 17:17:48,906 WARN L192 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 28 [2019-12-07 17:17:52,889 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (or (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-12-07 17:18:07,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:18:07,784 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-12-07 17:18:07,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:18:07,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-12-07 17:18:07,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:18:07,786 INFO L225 Difference]: With dead ends: 33 [2019-12-07 17:18:07,786 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 17:18:07,787 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=34, Invalid=64, Unknown=4, NotChecked=54, Total=156 [2019-12-07 17:18:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 17:18:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-12-07 17:18:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 17:18:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-12-07 17:18:07,795 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-12-07 17:18:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:18:07,796 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-12-07 17:18:07,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:18:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-12-07 17:18:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:18:07,797 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:18:07,797 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:18:07,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 17:18:07,999 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:18:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:18:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-12-07 17:18:08,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 17:18:08,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134242996] [2019-12-07 17:18:08,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/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 17:18:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:18:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:18:10,712 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 17:18:10,712 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:18:10,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 17:18:10,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:18:10 BoogieIcfgContainer [2019-12-07 17:18:10,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:18:10,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:18:10,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:18:10,944 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:18:10,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:17:05" (3/4) ... [2019-12-07 17:18:10,948 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:18:10,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_434498cd-112c-43a7-b4a3-315768c90db4/bin/uautomizer/witness.graphml [2019-12-07 17:18:10,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:18:10,980 INFO L168 Benchmark]: Toolchain (without parser) took 73917.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 953.7 MB in the beginning and 985.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 89.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:18:10,981 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 17:18:10,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.13 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:18:10,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:18:10,982 INFO L168 Benchmark]: Boogie Preprocessor took 19.36 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:18:10,982 INFO L168 Benchmark]: RCFGBuilder took 8539.74 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:18:10,983 INFO L168 Benchmark]: TraceAbstraction took 65105.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.0 MB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:18:10,983 INFO L168 Benchmark]: Witness Printer took 35.49 ms. Allocated memory is still 1.2 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:18:10,985 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 159.13 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -173.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.36 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 8539.74 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 65105.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.0 MB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 11.5 GB. * Witness Printer took 35.49 ms. Allocated memory is still 1.2 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Result: UNSAFE, OverallTime: 65.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 52.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 41 SDslu, 74 SDs, 0 SdLazy, 74 SolverSat, 21 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 30.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 28.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1208 SizeOfPredicates, 11 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 12 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 proved your program to be incorrect! Received shutdown request...