./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:12:12,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:12:12,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:12:12,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:12:12,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:12:12,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:12:12,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:12:12,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:12:12,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:12:12,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:12:12,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:12:12,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:12:12,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:12:12,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:12:12,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:12:12,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:12:12,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:12:12,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:12:12,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:12:12,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:12:12,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:12:12,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:12:12,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:12:12,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:12:12,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:12:12,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:12:12,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:12:12,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:12:12,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:12:12,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:12:12,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:12:12,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:12:12,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:12:12,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:12:12,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:12:12,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:12:12,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:12:12,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:12:12,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:12:12,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:12:12,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:12:12,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:12:12,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:12:12,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:12:12,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:12:12,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:12:12,229 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:12:12,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:12:12,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:12:12,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:12:12,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:12:12,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:12:12,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:12:12,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:12:12,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:12:12,233 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:12:12,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:12:12,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:12:12,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:12:12,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:12:12,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:12:12,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:12:12,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:12:12,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:12:12,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:12:12,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:12:12,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:12:12,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:12:12,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:12:12,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:12:12,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:12:12,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-11-28 03:12:12,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:12:12,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:12:12,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:12:12,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:12:12,622 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:12:12,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-28 03:12:12,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/cf58df2e8/623d00fcbd054dbc84dde12072ff3706/FLAGaa00adbf1 [2020-11-28 03:12:13,395 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:12:13,396 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-28 03:12:13,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/cf58df2e8/623d00fcbd054dbc84dde12072ff3706/FLAGaa00adbf1 [2020-11-28 03:12:13,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/cf58df2e8/623d00fcbd054dbc84dde12072ff3706 [2020-11-28 03:12:13,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:12:13,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:12:13,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:13,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:12:13,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:12:13,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:13" (1/1) ... [2020-11-28 03:12:13,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec71e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:13, skipping insertion in model container [2020-11-28 03:12:13,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:13" (1/1) ... [2020-11-28 03:12:13,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:12:13,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:12:14,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:14,080 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:12:14,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:14,140 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:12:14,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14 WrapperNode [2020-11-28 03:12:14,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:14,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:14,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:12:14,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:12:14,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:14,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:12:14,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:12:14,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:12:14,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... [2020-11-28 03:12:14,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:12:14,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:12:14,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:12:14,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:12:14,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/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 [2020-11-28 03:12:14,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:12:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:12:14,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:12:14,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:12:14,559 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:12:14,559 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:12:14,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:14 BoogieIcfgContainer [2020-11-28 03:12:14,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:12:14,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:12:14,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:12:14,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:12:14,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:13" (1/3) ... [2020-11-28 03:12:14,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b7f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:14, skipping insertion in model container [2020-11-28 03:12:14,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:14" (2/3) ... [2020-11-28 03:12:14,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b7f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:14, skipping insertion in model container [2020-11-28 03:12:14,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:14" (3/3) ... [2020-11-28 03:12:14,573 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-11-28 03:12:14,587 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:12:14,592 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:12:14,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:12:14,668 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:12:14,681 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:12:14,682 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:12:14,682 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:12:14,682 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:12:14,682 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:12:14,682 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:12:14,683 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:12:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:12:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:12:14,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:14,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:12:14,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-28 03:12:14,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:12:14,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222195382] [2020-11-28 03:12:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:12:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:14,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:12:14,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:12:15,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:12:15,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:12:15,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:12:15,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:12:15 BoogieIcfgContainer [2020-11-28 03:12:15,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:12:15,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:12:15,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:12:15,057 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:12:15,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:14" (3/4) ... [2020-11-28 03:12:15,065 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:12:15,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:12:15,071 INFO L168 Benchmark]: Toolchain (without parser) took 1309.43 ms. Allocated memory is still 88.1 MB. Free memory was 57.5 MB in the beginning and 39.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:15,073 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 47.3 MB in the beginning and 47.3 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:15,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.24 ms. Allocated memory is still 88.1 MB. Free memory was 57.3 MB in the beginning and 65.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:15,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.19 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:15,078 INFO L168 Benchmark]: Boogie Preprocessor took 25.31 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 62.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:15,079 INFO L168 Benchmark]: RCFGBuilder took 352.55 ms. Allocated memory is still 88.1 MB. Free memory was 62.7 MB in the beginning and 51.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:15,082 INFO L168 Benchmark]: TraceAbstraction took 488.78 ms. Allocated memory is still 88.1 MB. Free memory was 51.5 MB in the beginning and 40.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:15,083 INFO L168 Benchmark]: Witness Printer took 8.88 ms. Allocated memory is still 88.1 MB. Free memory was 40.1 MB in the beginning and 39.7 MB in the end (delta: 382.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:15,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 47.3 MB in the beginning and 47.3 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.24 ms. Allocated memory is still 88.1 MB. Free memory was 57.3 MB in the beginning and 65.2 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.19 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.31 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 62.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 352.55 ms. Allocated memory is still 88.1 MB. Free memory was 62.7 MB in the beginning and 51.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 488.78 ms. Allocated memory is still 88.1 MB. Free memory was 51.5 MB in the beginning and 40.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 8.88 ms. Allocated memory is still 88.1 MB. Free memory was 40.1 MB in the beginning and 39.7 MB in the end (delta: 382.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L3] __assert_fail("0", "float-no-simp6.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-28 03:12:17,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:12:17,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:12:17,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:12:17,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:12:17,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:12:17,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:12:17,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:12:17,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:12:17,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:12:17,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:12:17,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:12:17,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:12:17,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:12:17,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:12:17,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:12:17,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:12:17,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:12:17,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:12:17,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:12:17,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:12:17,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:12:17,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:12:17,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:12:17,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:12:17,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:12:18,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:12:18,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:12:18,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:12:18,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:12:18,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:12:18,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:12:18,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:12:18,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:12:18,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:12:18,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:12:18,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:12:18,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:12:18,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:12:18,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:12:18,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:12:18,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:12:18,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:12:18,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:12:18,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:12:18,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:12:18,071 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:12:18,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:12:18,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:12:18,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:12:18,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:12:18,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:12:18,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:12:18,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:12:18,075 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:12:18,075 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:12:18,075 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:12:18,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:12:18,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:12:18,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:12:18,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:12:18,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:12:18,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:12:18,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:12:18,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:12:18,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:12:18,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:12:18,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:12:18,079 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:12:18,079 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:12:18,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:12:18,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:12:18,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:12:18,080 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-11-28 03:12:18,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:12:18,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:12:18,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:12:18,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:12:18,582 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:12:18,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-28 03:12:18,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/a71127e43/9d72f4361da746ecb0bc4a1a02ba107a/FLAG2565f4de1 [2020-11-28 03:12:19,372 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:12:19,374 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-11-28 03:12:19,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/a71127e43/9d72f4361da746ecb0bc4a1a02ba107a/FLAG2565f4de1 [2020-11-28 03:12:19,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/data/a71127e43/9d72f4361da746ecb0bc4a1a02ba107a [2020-11-28 03:12:19,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:12:19,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:12:19,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:19,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:12:19,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:12:19,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:19" (1/1) ... [2020-11-28 03:12:19,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698051f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:19, skipping insertion in model container [2020-11-28 03:12:19,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:19" (1/1) ... [2020-11-28 03:12:19,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:12:19,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:12:20,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:20,080 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:12:20,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:12:20,147 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:12:20,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20 WrapperNode [2020-11-28 03:12:20,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:12:20,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:20,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:12:20,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:12:20,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:12:20,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:12:20,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:12:20,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:12:20,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... [2020-11-28 03:12:20,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:12:20,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:12:20,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:12:20,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:12:20,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/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 [2020-11-28 03:12:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:12:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:12:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:12:20,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:12:21,826 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:12:21,826 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:12:21,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:21 BoogieIcfgContainer [2020-11-28 03:12:21,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:12:21,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:12:21,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:12:21,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:12:21,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:19" (1/3) ... [2020-11-28 03:12:21,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56b541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:21, skipping insertion in model container [2020-11-28 03:12:21,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:20" (2/3) ... [2020-11-28 03:12:21,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f56b541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:21, skipping insertion in model container [2020-11-28 03:12:21,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:21" (3/3) ... [2020-11-28 03:12:21,851 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-11-28 03:12:21,885 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:12:21,893 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:12:21,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:12:21,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:12:21,938 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:12:21,938 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:12:21,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:12:21,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:12:21,939 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:12:21,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:12:21,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:12:21,953 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:12:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:12:21,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:21,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:12:21,960 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-11-28 03:12:21,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:12:21,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260267496] [2020-11-28 03:12:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 03:12:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:22,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:12:22,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:22,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:12:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:22,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260267496] [2020-11-28 03:12:22,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:22,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:12:22,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703009939] [2020-11-28 03:12:22,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:12:22,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:12:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:12:22,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:22,438 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-11-28 03:12:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:23,451 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-28 03:12:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:12:23,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-11-28 03:12:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:23,460 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:12:23,461 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:12:23,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:12:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:12:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:12:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-28 03:12:23,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-11-28 03:12:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:23,503 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-28 03:12:23,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:12:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-28 03:12:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:12:23,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:23,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:12:23,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:12:23,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:23,720 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-11-28 03:12:23,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:12:23,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890070556] [2020-11-28 03:12:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 03:12:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:24,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:12:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:24,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:12:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:24,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890070556] [2020-11-28 03:12:24,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:24,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:12:24,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375086342] [2020-11-28 03:12:24,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:12:24,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:12:24,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:12:24,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:24,281 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-11-28 03:12:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:24,795 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-11-28 03:12:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:12:24,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-28 03:12:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:24,796 INFO L225 Difference]: With dead ends: 11 [2020-11-28 03:12:24,797 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:12:24,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:12:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:12:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:12:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-11-28 03:12:24,800 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-11-28 03:12:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:24,801 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-11-28 03:12:24,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:12:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-11-28 03:12:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:12:24,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:12:24,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:12:25,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:12:25,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:12:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:12:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-11-28 03:12:25,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:12:25,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557538796] [2020-11-28 03:12:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 03:12:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:12:25,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:12:25,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:12:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:25,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:12:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:12:25,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557538796] [2020-11-28 03:12:25,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:12:25,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 03:12:25,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298165257] [2020-11-28 03:12:25,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:12:25,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:12:25,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:12:25,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:25,505 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2020-11-28 03:12:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:12:26,523 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-11-28 03:12:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:12:26,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 03:12:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:12:26,531 INFO L225 Difference]: With dead ends: 9 [2020-11-28 03:12:26,531 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:12:26,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:12:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:12:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:12:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:12:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:12:26,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-28 03:12:26,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:12:26,532 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:12:26,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:12:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:12:26,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:12:26,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:12:26,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:12:26,737 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,738 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:12:26,739 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-28 03:12:26,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:12:26 BoogieIcfgContainer [2020-11-28 03:12:26,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:12:26,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:12:26,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:12:26,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:12:26,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:21" (3/4) ... [2020-11-28 03:12:26,749 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:12:26,759 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:12:26,760 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:12:26,760 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:12:26,760 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:12:26,816 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7fdb6746-a65d-45f8-a3af-ced59ee6da72/bin/uautomizer/witness.graphml [2020-11-28 03:12:26,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:12:26,819 INFO L168 Benchmark]: Toolchain (without parser) took 7087.55 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 53.4 MB in the beginning and 69.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:26,820 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 52.4 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:26,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.76 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 41.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:26,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.20 ms. Allocated memory is still 69.2 MB. Free memory was 41.4 MB in the beginning and 53.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:26,822 INFO L168 Benchmark]: Boogie Preprocessor took 72.13 ms. Allocated memory is still 69.2 MB. Free memory was 53.7 MB in the beginning and 52.7 MB in the end (delta: 995.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:26,822 INFO L168 Benchmark]: RCFGBuilder took 1530.24 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 41.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:26,823 INFO L168 Benchmark]: TraceAbstraction took 4900.48 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 40.5 MB in the beginning and 72.4 MB in the end (delta: -31.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:12:26,823 INFO L168 Benchmark]: Witness Printer took 72.71 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 69.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:12:26,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 69.2 MB. Free memory was 52.4 MB in the beginning and 52.4 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 414.76 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 41.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.20 ms. Allocated memory is still 69.2 MB. Free memory was 41.4 MB in the beginning and 53.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.13 ms. Allocated memory is still 69.2 MB. Free memory was 53.7 MB in the beginning and 52.7 MB in the end (delta: 995.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1530.24 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 41.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4900.48 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 40.5 MB in the beginning and 72.4 MB in the end (delta: -31.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 72.71 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 69.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 33 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 984 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...