./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 ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --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=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --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-ee8e70e [2020-10-24 14:14:38,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:14:38,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:14:38,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:14:38,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:14:38,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:14:38,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:14:38,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:14:38,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:14:38,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:14:38,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:14:38,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:14:38,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:14:38,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:14:38,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:14:38,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:14:38,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:14:38,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:14:38,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:14:38,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:14:38,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:14:38,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:14:38,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:14:38,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:14:38,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:14:38,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:14:38,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:14:38,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:14:38,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:14:38,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:14:38,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:14:38,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:14:38,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:14:38,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:14:38,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:14:38,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:14:38,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:14:38,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:14:38,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:14:38,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:14:38,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:14:38,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:14:38,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:14:38,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:14:38,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:14:38,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:14:38,448 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:14:38,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:14:38,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:14:38,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:14:38,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:14:38,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:14:38,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:14:38,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:14:38,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:14:38,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:14:38,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:14:38,451 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:14:38,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:14:38,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:14:38,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:14:38,452 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:14:38,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:14:38,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:14:38,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:14:38,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:14:38,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:14:38,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:14:38,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:14:38,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:14:38,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:14:38,459 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:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-10-24 14:14:38,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:14:38,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:14:38,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:14:38,930 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:14:38,931 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:14:38,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 14:14:39,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2eff1e55/182e0751571041648782e3baea93c045/FLAG6bd03f714 [2020-10-24 14:14:39,584 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:14:39,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 14:14:39,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2eff1e55/182e0751571041648782e3baea93c045/FLAG6bd03f714 [2020-10-24 14:14:39,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2eff1e55/182e0751571041648782e3baea93c045 [2020-10-24 14:14:39,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:14:39,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:14:39,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:14:39,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:14:39,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:14:39,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:14:39" (1/1) ... [2020-10-24 14:14:39,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53053563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:39, skipping insertion in model container [2020-10-24 14:14:39,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:14:39" (1/1) ... [2020-10-24 14:14:39,978 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:14:40,003 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:14:40,199 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:14:40,212 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:14:40,237 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:14:40,259 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:14:40,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40 WrapperNode [2020-10-24 14:14:40,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:14:40,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:14:40,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:14:40,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:14:40,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:14:40,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:14:40,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:14:40,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:14:40,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... [2020-10-24 14:14:40,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:14:40,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:14:40,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:14:40,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:14:40,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 14:14:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:14:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:14:40,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:14:40,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:14:40,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:14:40,699 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 14:14:40,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:40 BoogieIcfgContainer [2020-10-24 14:14:40,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:14:40,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:14:40,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:14:40,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:14:40,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:14:39" (1/3) ... [2020-10-24 14:14:40,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:14:40, skipping insertion in model container [2020-10-24 14:14:40,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:40" (2/3) ... [2020-10-24 14:14:40,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:14:40, skipping insertion in model container [2020-10-24 14:14:40,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:40" (3/3) ... [2020-10-24 14:14:40,726 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-10-24 14:14:40,758 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:14:40,770 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-24 14:14:40,803 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-24 14:14:40,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:14:40,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:14:40,851 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:14:40,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:14:40,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:14:40,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:14:40,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:14:40,852 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:14:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 14:14:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 14:14:40,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:14:40,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 14:14:40,881 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:14:40,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:14:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 14:14:40,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:14:40,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103037838] [2020-10-24 14:14:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:14:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:14:41,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:14:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:14:41,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:14:41,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:14:41,123 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:14:41,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:14:41,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:14:41 BoogieIcfgContainer [2020-10-24 14:14:41,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:14:41,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:14:41,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:14:41,150 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:14:41,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:40" (3/4) ... [2020-10-24 14:14:41,155 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:14:41,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:14:41,158 INFO L168 Benchmark]: Toolchain (without parser) took 1225.81 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 18.6 MB in the beginning and 37.9 MB in the end (delta: -19.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:14:41,159 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 25.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:14:41,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.91 ms. Allocated memory is still 46.1 MB. Free memory was 17.9 MB in the beginning and 21.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-10-24 14:14:41,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 20.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:14:41,163 INFO L168 Benchmark]: Boogie Preprocessor took 23.33 ms. Allocated memory is still 46.1 MB. Free memory was 20.1 MB in the beginning and 19.1 MB in the end (delta: 974.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:14:41,164 INFO L168 Benchmark]: RCFGBuilder took 372.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 32.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-10-24 14:14:41,165 INFO L168 Benchmark]: TraceAbstraction took 445.09 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 38.3 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:14:41,166 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 37.9 MB in the end (delta: 380.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:14:41,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 25.3 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.91 ms. Allocated memory is still 46.1 MB. Free memory was 17.9 MB in the beginning and 21.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 46.1 MB. Free memory was 21.5 MB in the beginning and 20.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.33 ms. Allocated memory is still 46.1 MB. Free memory was 20.1 MB in the beginning and 19.1 MB in the end (delta: 974.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 372.07 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.1 MB in the beginning and 32.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 445.09 ms. Allocated memory is still 56.6 MB. Free memory was 32.2 MB in the beginning and 38.3 MB in the end (delta: -6.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.97 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 37.9 MB in the end (delta: 380.3 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 someBinaryArithmeticFLOAT_SMToperation at line 23, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 25. 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: 0.2s, 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-ee8e70e [2020-10-24 14:14:43,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:14:43,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:14:43,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:14:43,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:14:43,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:14:43,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:14:43,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:14:43,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:14:43,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:14:43,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:14:43,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:14:43,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:14:43,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:14:43,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:14:43,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:14:43,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:14:43,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:14:43,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:14:43,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:14:43,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:14:43,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:14:43,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:14:43,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:14:43,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:14:43,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:14:43,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:14:43,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:14:43,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:14:43,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:14:43,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:14:44,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:14:44,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:14:44,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:14:44,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:14:44,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:14:44,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:14:44,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:14:44,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:14:44,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:14:44,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:14:44,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:14:44,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:14:44,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:14:44,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:14:44,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:14:44,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:14:44,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:14:44,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:14:44,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:14:44,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:14:44,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:14:44,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:14:44,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:14:44,089 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:14:44,089 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:14:44,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:14:44,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:14:44,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:14:44,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:14:44,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:14:44,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:14:44,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:14:44,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:14:44,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:14:44,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:14:44,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:14:44,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:14:44,092 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:14:44,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:14:44,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:14:44,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:14:44,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:14:44,093 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:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-10-24 14:14:44,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:14:44,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:14:44,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:14:44,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:14:44,621 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:14:44,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 14:14:44,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37346eac5/8aef9a92d5644de4974458287c569474/FLAG8e0838b9b [2020-10-24 14:14:45,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:14:45,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2020-10-24 14:14:45,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37346eac5/8aef9a92d5644de4974458287c569474/FLAG8e0838b9b [2020-10-24 14:14:45,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37346eac5/8aef9a92d5644de4974458287c569474 [2020-10-24 14:14:45,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:14:45,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:14:45,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:14:45,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:14:45,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:14:45,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:14:45" (1/1) ... [2020-10-24 14:14:45,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a426ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:45, skipping insertion in model container [2020-10-24 14:14:45,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:14:45" (1/1) ... [2020-10-24 14:14:45,830 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:14:45,850 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:14:46,049 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:14:46,080 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:14:46,109 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:14:46,131 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:14:46,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46 WrapperNode [2020-10-24 14:14:46,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:14:46,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:14:46,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:14:46,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:14:46,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:14:46,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:14:46,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:14:46,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:14:46,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... [2020-10-24 14:14:46,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:14:46,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:14:46,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:14:46,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:14:46,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 14:14:46,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:14:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:14:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:14:46,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:14:46,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:14:46,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 14:14:46,811 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:14:46,812 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 14:14:46,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:46 BoogieIcfgContainer [2020-10-24 14:14:46,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:14:46,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:14:46,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:14:46,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:14:46,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:14:45" (1/3) ... [2020-10-24 14:14:46,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5177745f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:14:46, skipping insertion in model container [2020-10-24 14:14:46,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:46" (2/3) ... [2020-10-24 14:14:46,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5177745f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:14:46, skipping insertion in model container [2020-10-24 14:14:46,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:46" (3/3) ... [2020-10-24 14:14:46,830 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-10-24 14:14:46,845 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:14:46,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-24 14:14:46,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-24 14:14:46,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:14:46,921 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:14:46,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:14:46,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:14:46,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:14:46,922 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:14:46,922 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:14:46,922 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:14:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-24 14:14:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-24 14:14:46,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:14:46,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-24 14:14:46,954 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:14:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:14:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-10-24 14:14:46,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:14:46,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191368687] [2020-10-24 14:14:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 14:14:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:14:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:14:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:14:47,931 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 14:14:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:14:47,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:14:48,910 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-24 14:14:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:14:48,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191368687] [2020-10-24 14:14:48,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:14:48,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:14:48,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770475551] [2020-10-24 14:14:48,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:14:48,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:14:48,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:14:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:14:48,944 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2020-10-24 14:14:49,704 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-24 14:14:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:14:49,794 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-10-24 14:14:49,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:14:49,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-10-24 14:14:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:14:49,809 INFO L225 Difference]: With dead ends: 30 [2020-10-24 14:14:49,810 INFO L226 Difference]: Without dead ends: 11 [2020-10-24 14:14:49,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 14:14:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-24 14:14:49,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-24 14:14:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-24 14:14:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-10-24 14:14:49,854 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-10-24 14:14:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:14:49,855 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-10-24 14:14:49,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:14:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-10-24 14:14:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-24 14:14:49,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:14:49,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-24 14:14:50,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:14:50,072 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:14:50,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:14:50,073 INFO L82 PathProgramCache]: Analyzing trace with hash 889691430, now seen corresponding path program 1 times [2020-10-24 14:14:50,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:14:50,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636400043] [2020-10-24 14:14:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 14:14:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:14:50,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 14:14:50,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:14:52,618 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 14:14:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:14:52,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:14:55,484 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-24 14:14:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:14:55,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636400043] [2020-10-24 14:14:55,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:14:55,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:14:55,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902540832] [2020-10-24 14:14:55,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:14:55,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:14:55,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:14:55,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:14:55,515 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-10-24 14:14:58,338 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification that was a NOOP. DAG size: 37 [2020-10-24 14:14:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:14:58,904 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-10-24 14:14:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:14:58,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-10-24 14:14:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:14:58,911 INFO L225 Difference]: With dead ends: 11 [2020-10-24 14:14:58,911 INFO L226 Difference]: Without dead ends: 9 [2020-10-24 14:14:58,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 14:14:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-24 14:14:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-24 14:14:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 14:14:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-10-24 14:14:58,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-10-24 14:14:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:14:58,916 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-10-24 14:14:58,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:14:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-10-24 14:14:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 14:14:58,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:14:58,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:14:59,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:14:59,128 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:14:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:14:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash 295158664, now seen corresponding path program 1 times [2020-10-24 14:14:59,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:14:59,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663362070] [2020-10-24 14:14:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 14:14:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:14:59,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-24 14:14:59,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:14:59,835 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-10-24 14:14:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:14:59,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:15:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:15:00,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663362070] [2020-10-24 14:15:00,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:15:00,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 14:15:00,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265818286] [2020-10-24 14:15:00,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:15:00,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:15:00,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:15:00,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:15:00,368 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2020-10-24 14:15:00,688 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-24 14:15:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:15:00,690 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-10-24 14:15:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:15:00,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-24 14:15:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:15:00,690 INFO L225 Difference]: With dead ends: 9 [2020-10-24 14:15:00,691 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 14:15:00,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 14:15:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 14:15:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 14:15:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 14:15:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 14:15:00,692 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-10-24 14:15:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:15:00,693 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 14:15:00,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:15:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 14:15:00,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 14:15:00,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 14:15:00,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 14:15:00,903 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 14:15:00,904 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-24 14:15:00,904 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,904 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-24 14:15:00,904 INFO L274 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2020-10-24 14:15:00,904 INFO L274 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2020-10-24 14:15:00,904 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point L3-4(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point L3-5(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 14:15:00,905 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 14:15:00,906 INFO L274 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2020-10-24 14:15:00,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 14:15:00,906 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-24 14:15:00,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:15:00 BoogieIcfgContainer [2020-10-24 14:15:00,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:15:00,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:15:00,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:15:00,913 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:15:00,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:46" (3/4) ... [2020-10-24 14:15:00,918 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 14:15:00,933 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 14:15:00,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 14:15:00,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 14:15:00,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 14:15:00,993 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 14:15:00,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:15:00,995 INFO L168 Benchmark]: Toolchain (without parser) took 15207.72 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 19.6 MB in the beginning and 31.6 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:00,996 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:15:00,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.57 ms. Allocated memory is still 41.9 MB. Free memory was 28.0 MB in the beginning and 15.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:00,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.73 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 15.8 MB in the beginning and 34.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:00,998 INFO L168 Benchmark]: Boogie Preprocessor took 34.67 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 32.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:00,998 INFO L168 Benchmark]: RCFGBuilder took 590.20 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 31.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:00,999 INFO L168 Benchmark]: TraceAbstraction took 14094.81 ms. Allocated memory is still 50.3 MB. Free memory was 31.2 MB in the beginning and 19.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:01,000 INFO L168 Benchmark]: Witness Printer took 80.95 ms. Allocated memory is still 50.3 MB. Free memory was 19.4 MB in the beginning and 31.6 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:15:01,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 41.9 MB. Free memory was 22.5 MB in the beginning and 22.5 MB in the end (delta: 32.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.57 ms. Allocated memory is still 41.9 MB. Free memory was 28.0 MB in the beginning and 15.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.73 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 15.8 MB in the beginning and 34.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.67 ms. Allocated memory is still 50.3 MB. Free memory was 34.3 MB in the beginning and 32.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 590.20 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 31.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14094.81 ms. Allocated memory is still 50.3 MB. Free memory was 31.2 MB in the beginning and 19.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 80.95 ms. Allocated memory is still 50.3 MB. Free memory was 19.4 MB in the beginning and 31.6 MB in the end (delta: -12.2 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: 13.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 21 SDslu, 16 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.2s 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, 0.6s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 12 QuantifiedInterpolants, 4657 SizeOfPredicates, 11 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 17 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...