./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/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 fa5701cbf2aecb18d72b6e5744b88307065d31ab ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/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 fa5701cbf2aecb18d72b6e5744b88307065d31ab ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:47,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:47,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:47,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:47,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:47,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:47,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:47,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:47,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:47,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:47,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:47,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:47,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:47,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:47,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:47,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:47,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:47,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:47,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:47,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:47,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:47,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:47,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:47,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:47,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:47,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:47,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:47,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:47,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:47,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:47,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:47,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:47,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:47,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:47,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:47,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:47,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:47,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:47,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:47,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:47,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:47,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:47,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:47,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:47,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:47,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:47,063 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:47,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:47,063 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:47,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:47,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:47,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:47,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:47,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:47,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:47,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:47,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:47,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:47,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:47,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:47,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:47,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:47,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:47,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-10-22 09:02:47,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:47,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:47,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:47,103 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:47,104 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:47,104 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 09:02:47,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/6c3bdd7ae/55599706c0a248bca04f19b5c10930fe/FLAG1ff1616e9 [2019-10-22 09:02:47,544 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:47,544 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 09:02:47,550 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/6c3bdd7ae/55599706c0a248bca04f19b5c10930fe/FLAG1ff1616e9 [2019-10-22 09:02:47,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/6c3bdd7ae/55599706c0a248bca04f19b5c10930fe [2019-10-22 09:02:47,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:47,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:47,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:47,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:47,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:47,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:47,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9484a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47, skipping insertion in model container [2019-10-22 09:02:47,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:47,583 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:47,609 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:47,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:47,899 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:47,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:47,968 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:47,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47 WrapperNode [2019-10-22 09:02:47,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:47,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:47,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:47,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:47,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:47,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:48,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:48,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:48,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:48,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... [2019-10-22 09:02:48,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:48,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:48,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:48,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:48,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:48,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:48,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:48,606 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:48,606 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-10-22 09:02:48,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:48 BoogieIcfgContainer [2019-10-22 09:02:48,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:48,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:48,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:48,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:48,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:47" (1/3) ... [2019-10-22 09:02:48,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fa61f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:48, skipping insertion in model container [2019-10-22 09:02:48,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:47" (2/3) ... [2019-10-22 09:02:48,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fa61f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:48, skipping insertion in model container [2019-10-22 09:02:48,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:48" (3/3) ... [2019-10-22 09:02:48,616 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-10-22 09:02:48,627 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:48,634 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 09:02:48,642 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 09:02:48,667 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:48,667 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:48,667 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:48,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:48,668 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:48,668 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:48,668 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:48,668 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-10-22 09:02:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:02:48,695 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:48,695 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:48,697 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:48,702 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-10-22 09:02:48,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:48,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664428767] [2019-10-22 09:02:48,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:48,709 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:48,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:48,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664428767] [2019-10-22 09:02:48,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:48,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:02:48,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141905785] [2019-10-22 09:02:48,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:48,985 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:48,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:49,000 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 8 states. [2019-10-22 09:02:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:49,469 INFO L93 Difference]: Finished difference Result 269 states and 396 transitions. [2019-10-22 09:02:49,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:02:49,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-22 09:02:49,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:49,482 INFO L225 Difference]: With dead ends: 269 [2019-10-22 09:02:49,482 INFO L226 Difference]: Without dead ends: 170 [2019-10-22 09:02:49,485 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-10-22 09:02:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-22 09:02:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2019-10-22 09:02:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-22 09:02:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2019-10-22 09:02:49,527 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 14 [2019-10-22 09:02:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:49,528 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2019-10-22 09:02:49,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2019-10-22 09:02:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:02:49,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:49,529 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:49,529 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1417488386, now seen corresponding path program 1 times [2019-10-22 09:02:49,530 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:49,530 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148295837] [2019-10-22 09:02:49,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:49,530 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:49,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:49,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:49,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148295837] [2019-10-22 09:02:49,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:49,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:02:49,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299957708] [2019-10-22 09:02:49,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:49,729 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:49,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:49,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:49,733 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand 8 states. [2019-10-22 09:02:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:49,986 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2019-10-22 09:02:49,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 09:02:49,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-22 09:02:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:49,988 INFO L225 Difference]: With dead ends: 183 [2019-10-22 09:02:49,988 INFO L226 Difference]: Without dead ends: 154 [2019-10-22 09:02:49,989 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:02:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-22 09:02:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 99. [2019-10-22 09:02:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-10-22 09:02:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2019-10-22 09:02:50,001 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 18 [2019-10-22 09:02:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:50,001 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2019-10-22 09:02:50,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2019-10-22 09:02:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:50,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:50,002 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:50,003 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-10-22 09:02:50,003 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:50,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140262031] [2019-10-22 09:02:50,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:50,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:50,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:50,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:50,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140262031] [2019-10-22 09:02:50,313 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:50,314 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-22 09:02:50,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433769314] [2019-10-22 09:02:50,314 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 09:02:50,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:50,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 09:02:50,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:02:50,315 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand 15 states. [2019-10-22 09:02:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:51,348 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-10-22 09:02:51,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-22 09:02:51,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2019-10-22 09:02:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:51,350 INFO L225 Difference]: With dead ends: 225 [2019-10-22 09:02:51,350 INFO L226 Difference]: Without dead ends: 221 [2019-10-22 09:02:51,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2019-10-22 09:02:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2019-10-22 09:02:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 107. [2019-10-22 09:02:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 09:02:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2019-10-22 09:02:51,363 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 22 [2019-10-22 09:02:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:51,363 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-10-22 09:02:51,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 09:02:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2019-10-22 09:02:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:51,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:51,364 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:51,365 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:51,365 INFO L82 PathProgramCache]: Analyzing trace with hash 743535808, now seen corresponding path program 1 times [2019-10-22 09:02:51,365 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:51,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628103584] [2019-10-22 09:02:51,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:51,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:51,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:51,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628103584] [2019-10-22 09:02:51,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:51,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:02:51,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542618776] [2019-10-22 09:02:51,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:51,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:51,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:51,467 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand 8 states. [2019-10-22 09:02:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:51,658 INFO L93 Difference]: Finished difference Result 171 states and 213 transitions. [2019-10-22 09:02:51,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:02:51,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-22 09:02:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:51,660 INFO L225 Difference]: With dead ends: 171 [2019-10-22 09:02:51,660 INFO L226 Difference]: Without dead ends: 146 [2019-10-22 09:02:51,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:02:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2019-10-22 09:02:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 110. [2019-10-22 09:02:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-22 09:02:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-10-22 09:02:51,679 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-10-22 09:02:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:51,679 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-10-22 09:02:51,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-10-22 09:02:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:51,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:51,680 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:51,680 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash 743595390, now seen corresponding path program 1 times [2019-10-22 09:02:51,681 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:51,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218705965] [2019-10-22 09:02:51,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:51,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:51,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:51,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218705965] [2019-10-22 09:02:51,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:51,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:02:51,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976657918] [2019-10-22 09:02:51,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:51,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:51,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:51,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:51,838 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 8 states. [2019-10-22 09:02:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:52,014 INFO L93 Difference]: Finished difference Result 157 states and 195 transitions. [2019-10-22 09:02:52,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:52,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-10-22 09:02:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:52,016 INFO L225 Difference]: With dead ends: 157 [2019-10-22 09:02:52,016 INFO L226 Difference]: Without dead ends: 132 [2019-10-22 09:02:52,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-10-22 09:02:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-10-22 09:02:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2019-10-22 09:02:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-22 09:02:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2019-10-22 09:02:52,028 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 22 [2019-10-22 09:02:52,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:52,028 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2019-10-22 09:02:52,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:52,029 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2019-10-22 09:02:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:52,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:52,030 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:52,030 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:52,030 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-10-22 09:02:52,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:52,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317693619] [2019-10-22 09:02:52,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:52,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:52,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:52,096 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:52,096 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:52,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:52 BoogieIcfgContainer [2019-10-22 09:02:52,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:52,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:52,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:52,125 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:52,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:48" (3/4) ... [2019-10-22 09:02:52,129 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:52,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:52,132 INFO L168 Benchmark]: Toolchain (without parser) took 4565.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.5 MB in the beginning and 887.1 MB in the end (delta: 57.4 MB). Peak memory consumption was 185.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:52,133 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:52,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:52,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.83 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:52,136 INFO L168 Benchmark]: Boogie Preprocessor took 43.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:52,137 INFO L168 Benchmark]: RCFGBuilder took 540.39 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:52,138 INFO L168 Benchmark]: TraceAbstraction took 3515.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.1 MB in the end (delta: 196.3 MB). Peak memory consumption was 196.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:52,139 INFO L168 Benchmark]: Witness Printer took 5.33 ms. Allocated memory is still 1.2 GB. Free memory is still 887.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:52,143 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 399.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.83 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.62 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 540.39 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3515.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 887.1 MB in the end (delta: 196.3 MB). Peak memory consumption was 196.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.33 ms. Allocated memory is still 1.2 GB. Free memory is still 887.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 1134 SDslu, 3048 SDs, 0 SdLazy, 822 SolverSat, 105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=1, 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, 5 MinimizatonAttempts, 287 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 8117 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:54,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:54,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:54,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:54,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:54,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:54,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:54,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:54,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:54,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:54,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:54,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:54,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:54,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:54,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:54,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:54,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:54,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:54,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:54,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:54,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:54,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:54,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:54,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:54,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:54,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:54,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:54,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:54,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:54,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:54,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:54,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:54,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:54,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:54,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:54,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:54,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:54,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:54,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:54,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:54,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:54,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 09:02:54,403 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:54,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:54,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:54,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:54,405 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:54,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:54,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:54,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:54,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:54,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:54,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:54,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:54,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 09:02:54,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 09:02:54,409 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:54,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:54,409 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:54,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:54,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:54,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:54,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:54,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:54,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:54,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:54,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:54,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:54,411 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 09:02:54,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 09:02:54,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:54,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 09:02:54,412 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/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 -> fa5701cbf2aecb18d72b6e5744b88307065d31ab [2019-10-22 09:02:54,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:54,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:54,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:54,491 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:54,491 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:54,492 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 09:02:54,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/ed1679ecb/30ae8b0ad8bd41538c7fb3fa6c4b5682/FLAGcc70f8f74 [2019-10-22 09:02:54,949 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:54,949 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2019-10-22 09:02:54,955 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/ed1679ecb/30ae8b0ad8bd41538c7fb3fa6c4b5682/FLAGcc70f8f74 [2019-10-22 09:02:55,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/data/ed1679ecb/30ae8b0ad8bd41538c7fb3fa6c4b5682 [2019-10-22 09:02:55,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:55,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:55,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:55,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:55,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:55,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79420e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55, skipping insertion in model container [2019-10-22 09:02:55,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,352 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:55,380 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:55,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:55,641 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:55,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:55,779 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:55,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55 WrapperNode [2019-10-22 09:02:55,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:55,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:55,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:55,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:55,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:55,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:55,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:55,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:55,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:55,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:55,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:55,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:55,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:56,546 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:56,547 INFO L284 CfgBuilder]: Removed 34 assume(true) statements. [2019-10-22 09:02:56,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:56 BoogieIcfgContainer [2019-10-22 09:02:56,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:56,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:56,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:56,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:55" (1/3) ... [2019-10-22 09:02:56,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4177725a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:56, skipping insertion in model container [2019-10-22 09:02:56,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55" (2/3) ... [2019-10-22 09:02:56,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4177725a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:56, skipping insertion in model container [2019-10-22 09:02:56,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:56" (3/3) ... [2019-10-22 09:02:56,558 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2019-10-22 09:02:56,570 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:56,577 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-10-22 09:02:56,588 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-10-22 09:02:56,618 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:56,619 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:56,619 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:56,619 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:56,619 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:56,619 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:56,619 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:56,620 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2019-10-22 09:02:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:02:56,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:56,650 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:56,652 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,658 INFO L82 PathProgramCache]: Analyzing trace with hash 299467151, now seen corresponding path program 1 times [2019-10-22 09:02:56,668 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:56,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1794758817] [2019-10-22 09:02:56,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:56,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:02:56,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,842 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:56,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794758817] [2019-10-22 09:02:56,855 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:56,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-10-22 09:02:56,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350781657] [2019-10-22 09:02:56,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:56,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:56,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:56,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:56,877 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 7 states. [2019-10-22 09:02:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:57,251 INFO L93 Difference]: Finished difference Result 284 states and 409 transitions. [2019-10-22 09:02:57,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 09:02:57,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-10-22 09:02:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:57,265 INFO L225 Difference]: With dead ends: 284 [2019-10-22 09:02:57,266 INFO L226 Difference]: Without dead ends: 184 [2019-10-22 09:02:57,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:02:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2019-10-22 09:02:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2019-10-22 09:02:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 09:02:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2019-10-22 09:02:57,328 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 14 [2019-10-22 09:02:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:57,329 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2019-10-22 09:02:57,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2019-10-22 09:02:57,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:57,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:57,331 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:57,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:57,533 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1094887938, now seen corresponding path program 1 times [2019-10-22 09:02:57,533 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:57,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1828357851] [2019-10-22 09:02:57,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:57,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:02:57,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:57,654 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:57,720 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1828357851] [2019-10-22 09:02:57,720 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:57,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-10-22 09:02:57,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824365798] [2019-10-22 09:02:57,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:02:57,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:57,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:02:57,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:57,727 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 9 states. [2019-10-22 09:02:58,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,068 INFO L93 Difference]: Finished difference Result 190 states and 240 transitions. [2019-10-22 09:02:58,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:02:58,069 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-10-22 09:02:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:58,072 INFO L225 Difference]: With dead ends: 190 [2019-10-22 09:02:58,073 INFO L226 Difference]: Without dead ends: 165 [2019-10-22 09:02:58,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:02:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-22 09:02:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2019-10-22 09:02:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-22 09:02:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2019-10-22 09:02:58,104 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 22 [2019-10-22 09:02:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:58,104 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2019-10-22 09:02:58,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:02:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2019-10-22 09:02:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 09:02:58,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,106 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:58,307 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,307 INFO L82 PathProgramCache]: Analyzing trace with hash 620652719, now seen corresponding path program 1 times [2019-10-22 09:02:58,308 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:58,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [435288356] [2019-10-22 09:02:58,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:02:58,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:58,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 09:02:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,479 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [435288356] [2019-10-22 09:02:58,512 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:58,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 09:02:58,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717906883] [2019-10-22 09:02:58,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:58,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:58,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:58,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:58,514 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand 6 states. [2019-10-22 09:02:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,781 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2019-10-22 09:02:58,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:02:58,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-10-22 09:02:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:58,783 INFO L225 Difference]: With dead ends: 177 [2019-10-22 09:02:58,783 INFO L226 Difference]: Without dead ends: 173 [2019-10-22 09:02:58,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:02:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-22 09:02:58,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2019-10-22 09:02:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-22 09:02:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2019-10-22 09:02:58,803 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 22 [2019-10-22 09:02:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:58,804 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2019-10-22 09:02:58,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2019-10-22 09:02:58,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:02:58,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:58,805 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,006 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:59,006 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash 131253304, now seen corresponding path program 1 times [2019-10-22 09:02:59,007 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:59,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [203346942] [2019-10-22 09:02:59,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 09:02:59,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,151 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [203346942] [2019-10-22 09:02:59,177 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 9 [2019-10-22 09:02:59,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442933298] [2019-10-22 09:02:59,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:02:59,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:59,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:02:59,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:02:59,180 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand 9 states. [2019-10-22 09:02:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:59,540 INFO L93 Difference]: Finished difference Result 173 states and 213 transitions. [2019-10-22 09:02:59,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:02:59,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-10-22 09:02:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:59,542 INFO L225 Difference]: With dead ends: 173 [2019-10-22 09:02:59,542 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 09:02:59,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2019-10-22 09:02:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 09:02:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 120. [2019-10-22 09:02:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 09:02:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2019-10-22 09:02:59,558 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 24 [2019-10-22 09:02:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:59,558 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2019-10-22 09:02:59,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:02:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2019-10-22 09:02:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:02:59,560 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:59,560 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:59,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:59,766 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:59,766 INFO L82 PathProgramCache]: Analyzing trace with hash 133100346, now seen corresponding path program 1 times [2019-10-22 09:02:59,767 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:02:59,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [675113780] [2019-10-22 09:02:59,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:02:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:59,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:02:59,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,877 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 09:02:59,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:59,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [675113780] [2019-10-22 09:02:59,894 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:59,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2019-10-22 09:02:59,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238053954] [2019-10-22 09:02:59,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:59,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 09:02:59,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:59,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:59,896 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand 6 states. [2019-10-22 09:03:00,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:03:00,008 INFO L93 Difference]: Finished difference Result 137 states and 178 transitions. [2019-10-22 09:03:00,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:03:00,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-22 09:03:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:03:00,010 INFO L225 Difference]: With dead ends: 137 [2019-10-22 09:03:00,010 INFO L226 Difference]: Without dead ends: 118 [2019-10-22 09:03:00,010 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:03:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-10-22 09:03:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2019-10-22 09:03:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-22 09:03:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 142 transitions. [2019-10-22 09:03:00,021 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 142 transitions. Word has length 24 [2019-10-22 09:03:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:03:00,021 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 142 transitions. [2019-10-22 09:03:00,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:03:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 142 transitions. [2019-10-22 09:03:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:03:00,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:03:00,023 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:03:00,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:03:00,224 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:03:00,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash -553029582, now seen corresponding path program 1 times [2019-10-22 09:03:00,224 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 09:03:00,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [310206018] [2019-10-22 09:03:00,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:03:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:00,390 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 09:03:00,391 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:03:00,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 09:03:00,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:03:00 BoogieIcfgContainer [2019-10-22 09:03:00,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:03:00,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:03:00,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:03:00,629 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:03:00,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:56" (3/4) ... [2019-10-22 09:03:00,632 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:03:00,687 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_02937da3-b3ab-4ac6-b44a-b7531e74260a/bin/uautomizer/witness.graphml [2019-10-22 09:03:00,687 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:03:00,689 INFO L168 Benchmark]: Toolchain (without parser) took 5353.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 951.0 MB in the beginning and 771.0 MB in the end (delta: 180.0 MB). Peak memory consumption was 282.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,689 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:00,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.70 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,690 INFO L168 Benchmark]: Boogie Preprocessor took 66.94 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. [2019-10-22 09:03:00,691 INFO L168 Benchmark]: RCFGBuilder took 638.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,691 INFO L168 Benchmark]: TraceAbstraction took 4077.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 775.8 MB in the end (delta: 280.2 MB). Peak memory consumption was 280.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,692 INFO L168 Benchmark]: Witness Printer took 58.28 ms. Allocated memory is still 1.1 GB. Free memory was 775.8 MB in the beginning and 771.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:00,694 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 444.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 102.2 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -152.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.70 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 638.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4077.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 775.8 MB in the end (delta: 280.2 MB). Peak memory consumption was 280.2 MB. Max. memory is 11.5 GB. * Witness Printer took 58.28 ms. Allocated memory is still 1.1 GB. Free memory was 775.8 MB in the beginning and 771.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] zero = base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L232] a = base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] b = base2flt(mb, eb) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND TRUE a < b [L85] tmp = a [L86] a = b [L87] b = tmp [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L6] COND FALSE !(!(cond)) [L105] delta = ea - eb [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 7 error locations. Result: UNSAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 555 SDtfs, 756 SDslu, 2473 SDs, 0 SdLazy, 427 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 239 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 7672 SizeOfPredicates, 35 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...