./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.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_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 .......................................................................................................................................................................................................................................................................................................................................................... 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_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 14:41:12,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:41:12,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:41:12,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:41:12,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:41:12,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:41:12,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:41:12,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:41:12,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:41:12,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:41:12,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:41:12,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:41:12,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:41:12,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:41:12,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:41:12,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:41:12,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:41:12,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:41:12,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:41:12,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:41:12,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:41:12,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:41:12,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:41:12,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:41:12,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:41:12,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:41:12,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:41:12,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:41:12,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:41:12,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:41:12,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:41:12,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:41:12,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:41:12,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:41:12,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:41:12,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:41:12,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:41:12,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:41:12,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:41:12,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:41:12,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:41:12,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 14:41:12,938 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:41:12,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:41:12,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:41:12,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:41:12,940 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:41:12,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:41:12,940 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:41:12,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:41:12,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:41:12,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:41:12,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:41:12,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:41:12,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:41:12,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:41:12,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:41:12,943 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_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2019-12-07 14:41:13,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:41:13,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:41:13,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:41:13,056 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:41:13,057 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:41:13,057 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-12-07 14:41:13,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/a07bc5195/78352c728aa3410c8fa93cc77b55bef8/FLAGe61c7a641 [2019-12-07 14:41:13,573 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:41:13,574 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-12-07 14:41:13,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/a07bc5195/78352c728aa3410c8fa93cc77b55bef8/FLAGe61c7a641 [2019-12-07 14:41:13,586 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/a07bc5195/78352c728aa3410c8fa93cc77b55bef8 [2019-12-07 14:41:13,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:41:13,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:41:13,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:41:13,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:41:13,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:41:13,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17574348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13, skipping insertion in model container [2019-12-07 14:41:13,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:41:13,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:41:13,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:41:13,763 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:41:13,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:41:13,797 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:41:13,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13 WrapperNode [2019-12-07 14:41:13,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:41:13,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:41:13,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:41:13,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:41:13,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:41:13,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:41:13,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:41:13,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:41:13,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... [2019-12-07 14:41:13,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:41:13,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:41:13,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:41:13,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:41:13,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 14:41:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:41:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 14:41:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:41:13,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:41:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:41:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:41:14,066 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:41:14,066 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:41:14,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:14 BoogieIcfgContainer [2019-12-07 14:41:14,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:41:14,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:41:14,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:41:14,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:41:14,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:41:13" (1/3) ... [2019-12-07 14:41:14,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344531d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:41:14, skipping insertion in model container [2019-12-07 14:41:14,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:13" (2/3) ... [2019-12-07 14:41:14,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344531d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:41:14, skipping insertion in model container [2019-12-07 14:41:14,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:14" (3/3) ... [2019-12-07 14:41:14,072 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2019-12-07 14:41:14,078 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:41:14,082 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:41:14,089 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:41:14,105 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:41:14,105 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:41:14,105 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:41:14,105 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:41:14,105 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:41:14,105 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:41:14,105 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:41:14,105 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:41:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 14:41:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:41:14,119 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:14,119 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:14,120 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:14,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 14:41:14,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:41:14,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405824226] [2019-12-07 14:41:14,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:41:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:41:14,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405824226] [2019-12-07 14:41:14,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:14,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:41:14,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048403840] [2019-12-07 14:41:14,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:41:14,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:41:14,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:41:14,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:41:14,216 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 14:41:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:14,228 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 14:41:14,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:41:14,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 14:41:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:14,236 INFO L225 Difference]: With dead ends: 62 [2019-12-07 14:41:14,236 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 14:41:14,238 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:41:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 14:41:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 14:41:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 14:41:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 14:41:14,260 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 14:41:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:14,260 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 14:41:14,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:41:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 14:41:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:41:14,261 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:14,261 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:14,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:14,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 14:41:14,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:41:14,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192204682] [2019-12-07 14:41:14,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:41:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:14,305 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 14:41:14,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192204682] [2019-12-07 14:41:14,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:14,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:41:14,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400014869] [2019-12-07 14:41:14,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:41:14,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:41:14,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:41:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:41:14,307 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-12-07 14:41:14,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:14,345 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-12-07 14:41:14,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:41:14,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 14:41:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:14,347 INFO L225 Difference]: With dead ends: 53 [2019-12-07 14:41:14,347 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 14:41:14,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:41:14,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 14:41:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-12-07 14:41:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:41:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 14:41:14,352 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 14:41:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:14,352 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 14:41:14,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:41:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 14:41:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:41:14,353 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:14,353 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:14,353 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:14,354 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-12-07 14:41:14,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:41:14,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105185896] [2019-12-07 14:41:14,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:41:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:14,386 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 14:41:14,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105185896] [2019-12-07 14:41:14,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:14,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:41:14,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569819327] [2019-12-07 14:41:14,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:41:14,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:41:14,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:41:14,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:41:14,388 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 14:41:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:14,420 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-12-07 14:41:14,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:41:14,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 14:41:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:14,421 INFO L225 Difference]: With dead ends: 55 [2019-12-07 14:41:14,421 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 14:41:14,421 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:41:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 14:41:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-12-07 14:41:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:41:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 14:41:14,425 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-12-07 14:41:14,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:14,426 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 14:41:14,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:41:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 14:41:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:41:14,426 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:14,426 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:14,426 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:14,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 14:41:14,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:41:14,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357193073] [2019-12-07 14:41:14,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:41:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:41:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:41:14,469 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 14:41:14,469 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:41:14,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:41:14 BoogieIcfgContainer [2019-12-07 14:41:14,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:41:14,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:41:14,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:41:14,488 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:41:14,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:14" (3/4) ... [2019-12-07 14:41:14,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 14:41:14,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:41:14,492 INFO L168 Benchmark]: Toolchain (without parser) took 901.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 944.8 MB in the beginning and 997.2 MB in the end (delta: -52.4 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:14,492 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:41:14,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -131.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:14,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.07 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 14:41:14,493 INFO L168 Benchmark]: Boogie Preprocessor took 19.40 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 14:41:14,494 INFO L168 Benchmark]: RCFGBuilder took 221.63 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:14,494 INFO L168 Benchmark]: TraceAbstraction took 419.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.2 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:14,494 INFO L168 Benchmark]: Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 997.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:41:14,497 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 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 81.3 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -131.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.07 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 19.40 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 221.63 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 419.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.2 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.80 ms. Allocated memory is still 1.1 GB. Free memory is still 997.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 14:41:15,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:41:15,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:41:15,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:41:15,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:41:15,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:41:15,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:41:15,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:41:15,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:41:15,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:41:15,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:41:15,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:41:15,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:41:15,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:41:15,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:41:15,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:41:15,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:41:15,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:41:15,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:41:15,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:41:15,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:41:15,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:41:15,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:41:15,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:41:15,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:41:15,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:41:15,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:41:15,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:41:15,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:41:15,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:41:15,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:41:15,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:41:15,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:41:15,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:41:15,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:41:15,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:41:15,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:41:15,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:41:15,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:41:15,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:41:15,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:41:16,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 14:41:16,013 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:41:16,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:41:16,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:41:16,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:41:16,014 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:41:16,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:41:16,015 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:41:16,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:41:16,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:41:16,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:41:16,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:41:16,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:41:16,016 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 14:41:16,016 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 14:41:16,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:41:16,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:41:16,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:41:16,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:41:16,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:41:16,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:41:16,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:41:16,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:41:16,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:41:16,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:41:16,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:41:16,019 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_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2019-12-07 14:41:16,181 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:41:16,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:41:16,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:41:16,192 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:41:16,193 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:41:16,193 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-12-07 14:41:16,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/53f954d80/42a8dd99245f4faf8321608ac4e05b99/FLAG387656e3e [2019-12-07 14:41:16,661 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:41:16,662 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-12-07 14:41:16,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/53f954d80/42a8dd99245f4faf8321608ac4e05b99/FLAG387656e3e [2019-12-07 14:41:16,675 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/data/53f954d80/42a8dd99245f4faf8321608ac4e05b99 [2019-12-07 14:41:16,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:41:16,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:41:16,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:41:16,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:41:16,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:41:16,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16, skipping insertion in model container [2019-12-07 14:41:16,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:41:16,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:41:16,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:41:16,812 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:41:16,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:41:16,846 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:41:16,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16 WrapperNode [2019-12-07 14:41:16,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:41:16,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:41:16,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:41:16,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:41:16,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:41:16,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:41:16,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:41:16,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:41:16,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... [2019-12-07 14:41:16,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:41:16,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:41:16,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:41:16,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:41:16,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 14:41:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:41:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 14:41:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:41:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:41:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 14:41:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:41:17,180 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:41:17,180 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 14:41:17,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:17 BoogieIcfgContainer [2019-12-07 14:41:17,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:41:17,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:41:17,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:41:17,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:41:17,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:41:16" (1/3) ... [2019-12-07 14:41:17,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b531e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:41:17, skipping insertion in model container [2019-12-07 14:41:17,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:41:16" (2/3) ... [2019-12-07 14:41:17,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b531e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:41:17, skipping insertion in model container [2019-12-07 14:41:17,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:17" (3/3) ... [2019-12-07 14:41:17,186 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2019-12-07 14:41:17,193 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:41:17,197 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:41:17,204 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 14:41:17,219 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:41:17,219 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:41:17,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:41:17,219 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:41:17,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:41:17,220 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:41:17,220 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:41:17,220 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:41:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 14:41:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:41:17,233 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:17,234 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:17,234 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 14:41:17,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:17,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243176856] [2019-12-07 14:41:17,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 14:41:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:17,293 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 14:41:17,297 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:17,305 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 14:41:17,306 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:17,308 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 14:41:17,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243176856] [2019-12-07 14:41:17,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:17,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 14:41:17,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414075738] [2019-12-07 14:41:17,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:41:17,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:17,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:41:17,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:41:17,322 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 14:41:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:17,335 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 14:41:17,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:41:17,336 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 14:41:17,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:17,343 INFO L225 Difference]: With dead ends: 62 [2019-12-07 14:41:17,343 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 14:41:17,345 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:41:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 14:41:17,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 14:41:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 14:41:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 14:41:17,368 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 14:41:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:17,368 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 14:41:17,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:41:17,368 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 14:41:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 14:41:17,369 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:17,369 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:17,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 14:41:17,570 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:17,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 14:41:17,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:17,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3910291] [2019-12-07 14:41:17,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 14:41:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:17,695 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:41:17,697 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:17,718 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 14:41:17,718 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:17,732 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 14:41:17,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3910291] [2019-12-07 14:41:17,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:17,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 14:41:17,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556440079] [2019-12-07 14:41:17,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:41:17,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:17,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:41:17,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:41:17,734 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-12-07 14:41:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:17,797 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-12-07 14:41:17,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:41:17,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 14:41:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:17,800 INFO L225 Difference]: With dead ends: 68 [2019-12-07 14:41:17,800 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 14:41:17,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:41:17,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 14:41:17,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-12-07 14:41:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:41:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 14:41:17,808 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 14:41:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:17,808 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 14:41:17,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:41:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 14:41:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 14:41:17,809 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:17,809 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:18,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 14:41:18,011 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 14:41:18,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:18,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700103232] [2019-12-07 14:41:18,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/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 14:41:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:18,112 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:41:18,114 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:18,133 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 14:41:18,133 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:18,156 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 14:41:18,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700103232] [2019-12-07 14:41:18,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:18,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 14:41:18,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577285241] [2019-12-07 14:41:18,157 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:41:18,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:18,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:41:18,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:41:18,158 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 14:41:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:18,204 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-12-07 14:41:18,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:41:18,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 14:41:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:18,205 INFO L225 Difference]: With dead ends: 52 [2019-12-07 14:41:18,205 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 14:41:18,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:41:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 14:41:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 14:41:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 14:41:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-12-07 14:41:18,208 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-12-07 14:41:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:18,208 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-12-07 14:41:18,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:41:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-12-07 14:41:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 14:41:18,209 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:18,209 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:18,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 14:41:18,410 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-12-07 14:41:18,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:18,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342492918] [2019-12-07 14:41:18,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 14:41:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:18,509 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 14:41:18,510 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:18,520 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 14:41:18,521 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:18,533 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 14:41:18,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342492918] [2019-12-07 14:41:18,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:18,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 14:41:18,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239960841] [2019-12-07 14:41:18,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:41:18,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:18,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:41:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:41:18,535 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-12-07 14:41:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:18,593 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-12-07 14:41:18,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:41:18,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 14:41:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:18,594 INFO L225 Difference]: With dead ends: 61 [2019-12-07 14:41:18,595 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 14:41:18,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:41:18,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 14:41:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-12-07 14:41:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 14:41:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-12-07 14:41:18,600 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-12-07 14:41:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:18,600 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-12-07 14:41:18,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:41:18,601 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-12-07 14:41:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 14:41:18,601 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:18,602 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:18,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 14:41:18,802 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:18,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:18,803 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-12-07 14:41:18,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:18,803 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503301102] [2019-12-07 14:41:18,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 14:41:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:18,859 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 14:41:18,860 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:18,870 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 14:41:18,870 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:18,884 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 14:41:18,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503301102] [2019-12-07 14:41:18,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:18,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 14:41:18,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455885652] [2019-12-07 14:41:18,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:41:18,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:18,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:41:18,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:41:18,886 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-12-07 14:41:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:18,893 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-12-07 14:41:18,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:41:18,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-07 14:41:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:18,894 INFO L225 Difference]: With dead ends: 38 [2019-12-07 14:41:18,894 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 14:41:18,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:41:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 14:41:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 14:41:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 14:41:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-12-07 14:41:18,898 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-12-07 14:41:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:18,898 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 14:41:18,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:41:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-12-07 14:41:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 14:41:18,898 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:18,899 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:19,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 14:41:19,100 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-12-07 14:41:19,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:19,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804123477] [2019-12-07 14:41:19,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 14:41:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:19,212 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 14:41:19,213 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:19,240 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 14:41:19,240 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:19,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 14:41:19,273 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 14:41:19,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804123477] [2019-12-07 14:41:19,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:19,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 14:41:19,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351320446] [2019-12-07 14:41:19,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 14:41:19,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:41:19,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:41:19,275 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-12-07 14:41:19,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:19,346 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 14:41:19,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 14:41:19,346 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-12-07 14:41:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:19,347 INFO L225 Difference]: With dead ends: 40 [2019-12-07 14:41:19,347 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 14:41:19,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 14:41:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 14:41:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-12-07 14:41:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 14:41:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 14:41:19,351 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-12-07 14:41:19,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:19,351 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 14:41:19,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 14:41:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 14:41:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 14:41:19,352 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:19,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:19,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 14:41:19,554 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-12-07 14:41:19,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:19,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933827693] [2019-12-07 14:41:19,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 14:41:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:41:19,686 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 14:41:19,688 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:41:19,709 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 14:41:19,709 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:41:19,727 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 14:41:19,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933827693] [2019-12-07 14:41:19,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:41:19,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 14:41:19,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778496286] [2019-12-07 14:41:19,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:41:19,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 14:41:19,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:41:19,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:41:19,729 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-12-07 14:41:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:41:19,772 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-12-07 14:41:19,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:41:19,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-07 14:41:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:41:19,773 INFO L225 Difference]: With dead ends: 43 [2019-12-07 14:41:19,773 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 14:41:19,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:41:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 14:41:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 14:41:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 14:41:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 14:41:19,776 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-12-07 14:41:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:41:19,776 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 14:41:19,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:41:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 14:41:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 14:41:19,776 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:41:19,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:41:19,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 14:41:19,978 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:41:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:41:19,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-12-07 14:41:19,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 14:41:19,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125454609] [2019-12-07 14:41:19,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 14:41:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:41:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 14:41:20,161 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 14:41:20,161 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 14:41:20,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 14:41:20,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:41:20 BoogieIcfgContainer [2019-12-07 14:41:20,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:41:20,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:41:20,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:41:20,418 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:41:20,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:41:17" (3/4) ... [2019-12-07 14:41:20,420 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 14:41:20,454 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a2c3b11e-765a-4c6c-bb6f-fe4680953669/bin/uautomizer/witness.graphml [2019-12-07 14:41:20,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:41:20,455 INFO L168 Benchmark]: Toolchain (without parser) took 3777.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 952.4 MB in the beginning and 887.4 MB in the end (delta: 65.0 MB). Peak memory consumption was 192.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:20,456 INFO L168 Benchmark]: CDTParser took 0.14 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 14:41:20,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.02 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:20,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -175.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:20,457 INFO L168 Benchmark]: Boogie Preprocessor took 24.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:41:20,457 INFO L168 Benchmark]: RCFGBuilder took 245.94 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:20,457 INFO L168 Benchmark]: TraceAbstraction took 3235.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.4 MB in the end (delta: 204.2 MB). Peak memory consumption was 204.2 MB. Max. memory is 11.5 GB. [2019-12-07 14:41:20,457 INFO L168 Benchmark]: Witness Printer took 36.53 ms. Allocated memory is still 1.2 GB. Free memory is still 887.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:41:20,459 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 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.02 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 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 62.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -175.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.67 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 245.94 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3235.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.4 MB in the end (delta: 204.2 MB). Peak memory consumption was 204.2 MB. Max. memory is 11.5 GB. * Witness Printer took 36.53 ms. Allocated memory is still 1.2 GB. Free memory is still 887.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; [L44] COND FALSE !(__fpclassify_float(x) == 0) [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y [L51] return x > y ? x : y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L55] __uint32_t w; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7943 SizeOfPredicates, 27 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...