./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1300.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/float-newlib/double_req_bl_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ...................................................................................................................................................................................................................................................................................................................................... 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/float-newlib/double_req_bl_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ........................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:06:30,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:06:30,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:06:30,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:06:30,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:06:30,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:06:30,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:06:30,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:06:30,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:06:30,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:06:30,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:06:30,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:06:30,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:06:30,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:06:30,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:06:30,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:06:30,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:06:30,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:06:30,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:06:30,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:06:30,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:06:30,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:06:30,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:06:30,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:06:30,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:06:30,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:06:30,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:06:30,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:06:30,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:06:30,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:06:30,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:06:30,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:06:30,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:06:30,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:06:30,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:06:30,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:06:30,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:06:30,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:06:30,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:06:30,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:06:30,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:06:30,504 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 15:06:30,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:06:30,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:06:30,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:06:30,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:06:30,569 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:06:30,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:06:30,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:06:30,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:06:30,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:06:30,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:06:30,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:06:30,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:06:30,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:06:30,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:06:30,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:06:30,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:06:30,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:06:30,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:06:30,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:06:30,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:06:30,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:06:30,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:06:30,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:06:30,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:06:30,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:06:30,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:06:30,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:06:30,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:06:30,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:06:30,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-10-24 15:06:31,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:06:31,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:06:31,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:06:31,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:06:31,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:06:31,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 15:06:31,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/251f3f8fe/d80876d93d514afb8c988bae780842b0/FLAGd7da73ab9 [2020-10-24 15:06:31,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:06:31,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 15:06:31,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/251f3f8fe/d80876d93d514afb8c988bae780842b0/FLAGd7da73ab9 [2020-10-24 15:06:32,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/251f3f8fe/d80876d93d514afb8c988bae780842b0 [2020-10-24 15:06:32,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:06:32,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:06:32,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:32,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:06:32,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:06:32,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b2e977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32, skipping insertion in model container [2020-10-24 15:06:32,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,249 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:06:32,274 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:06:32,462 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:32,473 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:06:32,503 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:32,525 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:06:32,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32 WrapperNode [2020-10-24 15:06:32,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:32,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:32,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:06:32,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:06:32,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:32,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:06:32,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:06:32,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:06:32,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (1/1) ... [2020-10-24 15:06:32,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:06:32,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:06:32,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:06:32,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:06:32,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (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 15:06:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:06:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:06:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:06:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:06:32,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:06:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:06:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:06:33,250 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:06:33,251 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:06:33,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:33 BoogieIcfgContainer [2020-10-24 15:06:33,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:06:33,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:06:33,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:06:33,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:06:33,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:32" (1/3) ... [2020-10-24 15:06:33,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5f5734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:33, skipping insertion in model container [2020-10-24 15:06:33,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:32" (2/3) ... [2020-10-24 15:06:33,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5f5734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:33, skipping insertion in model container [2020-10-24 15:06:33,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:33" (3/3) ... [2020-10-24 15:06:33,269 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-10-24 15:06:33,282 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:06:33,291 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:06:33,305 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:06:33,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:06:33,347 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:06:33,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:06:33,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:06:33,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:06:33,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:06:33,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:06:33,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:06:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-24 15:06:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:06:33,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:33,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:33,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:33,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:33,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-10-24 15:06:33,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:33,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328782240] [2020-10-24 15:06:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:33,552 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 15:06:33,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328782240] [2020-10-24 15:06:33,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:33,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:06:33,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069923859] [2020-10-24 15:06:33,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:06:33,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:06:33,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:33,580 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-24 15:06:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:33,601 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-24 15:06:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:06:33,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 15:06:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:33,612 INFO L225 Difference]: With dead ends: 39 [2020-10-24 15:06:33,613 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:06:33,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:06:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:06:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:06:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 15:06:33,656 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-10-24 15:06:33,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:33,657 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 15:06:33,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:06:33,657 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 15:06:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:06:33,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:33,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:33,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:06:33,659 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:33,663 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-10-24 15:06:33,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:33,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765129926] [2020-10-24 15:06:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:33,888 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 15:06:33,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765129926] [2020-10-24 15:06:33,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:33,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 15:06:33,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313423003] [2020-10-24 15:06:33,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 15:06:33,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:06:33,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 15:06:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 15:06:33,898 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-10-24 15:06:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:33,935 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-24 15:06:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 15:06:33,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-24 15:06:33,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:33,939 INFO L225 Difference]: With dead ends: 24 [2020-10-24 15:06:33,939 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:06:33,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 15:06:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:06:33,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:06:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:06:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 15:06:33,959 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-10-24 15:06:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:33,961 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 15:06:33,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 15:06:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 15:06:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:06:33,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:33,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:33,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:06:33,968 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:33,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-10-24 15:06:33,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:06:33,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131794190] [2020-10-24 15:06:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:06:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:34,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:34,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:34,221 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:06:34,222 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:06:34,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 15:06:34,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:34 BoogieIcfgContainer [2020-10-24 15:06:34,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:06:34,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:06:34,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:06:34,282 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:06:34,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:33" (3/4) ... [2020-10-24 15:06:34,287 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:06:34,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:06:34,292 INFO L168 Benchmark]: Toolchain (without parser) took 2135.49 ms. Allocated memory was 39.8 MB in the beginning and 60.8 MB in the end (delta: 21.0 MB). Free memory was 15.8 MB in the beginning and 29.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:34,294 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 39.8 MB. Free memory was 25.4 MB in the beginning and 25.3 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:34,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.60 ms. Allocated memory is still 50.3 MB. Free memory was 34.8 MB in the beginning and 24.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:34,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.70 ms. Allocated memory is still 50.3 MB. Free memory was 24.8 MB in the beginning and 23.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:34,300 INFO L168 Benchmark]: Boogie Preprocessor took 68.12 ms. Allocated memory is still 50.3 MB. Free memory was 23.1 MB in the beginning and 33.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:34,309 INFO L168 Benchmark]: RCFGBuilder took 559.30 ms. Allocated memory is still 50.3 MB. Free memory was 33.5 MB in the beginning and 29.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:34,312 INFO L168 Benchmark]: TraceAbstraction took 1021.24 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 30.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:34,312 INFO L168 Benchmark]: Witness Printer took 6.82 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 29.5 MB in the end (delta: 304.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:34,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 39.8 MB. Free memory was 25.4 MB in the beginning and 25.3 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.60 ms. Allocated memory is still 50.3 MB. Free memory was 34.8 MB in the beginning and 24.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.70 ms. Allocated memory is still 50.3 MB. Free memory was 24.8 MB in the beginning and 23.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.12 ms. Allocated memory is still 50.3 MB. Free memory was 23.1 MB in the beginning and 33.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 559.30 ms. Allocated memory is still 50.3 MB. Free memory was 33.5 MB in the beginning and 29.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1021.24 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 30.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 6.82 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 29.5 MB in the end (delta: 304.3 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 bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 15:06:36,939 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-24 15:06:37,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:06:37,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:06:37,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:06:37,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:06:37,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:06:37,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:06:37,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:06:37,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:06:37,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:06:37,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:06:37,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:06:37,105 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 15:06:37,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:06:37,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:06:37,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:06:37,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:06:37,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:06:37,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:06:37,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:06:37,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:06:37,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:06:37,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:06:37,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:06:37,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:06:37,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:06:37,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:06:37,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:06:37,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:06:37,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:06:37,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:06:37,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:06:37,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:06:37,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:06:37,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:06:37,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:06:37,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:06:37,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:06:37,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:06:37,173 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:06:37,173 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:06:37,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:06:37,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:06:37,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:06:37,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-10-24 15:06:37,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:06:37,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:06:37,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:06:37,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:06:37,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:06:37,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 15:06:37,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2295dbd39/2d38b68c71024150bc65c3d196021b32/FLAG3fd307f68 [2020-10-24 15:06:38,486 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:06:38,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-10-24 15:06:38,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2295dbd39/2d38b68c71024150bc65c3d196021b32/FLAG3fd307f68 [2020-10-24 15:06:38,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2295dbd39/2d38b68c71024150bc65c3d196021b32 [2020-10-24 15:06:38,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:06:38,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:06:38,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:38,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:06:38,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:06:38,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:38" (1/1) ... [2020-10-24 15:06:38,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dea5971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:38, skipping insertion in model container [2020-10-24 15:06:38,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:38" (1/1) ... [2020-10-24 15:06:38,843 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:06:38,864 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:06:39,075 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:39,093 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:06:39,122 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:06:39,149 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:06:39,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39 WrapperNode [2020-10-24 15:06:39,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:06:39,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:39,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:06:39,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:06:39,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:06:39,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:06:39,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:06:39,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:06:39,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (1/1) ... [2020-10-24 15:06:39,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:06:39,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:06:39,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:06:39,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:06:39,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (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 15:06:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:06:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:06:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:06:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:06:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:06:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:06:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:06:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:06:39,910 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:06:39,911 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:06:39,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:39 BoogieIcfgContainer [2020-10-24 15:06:39,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:06:39,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:06:39,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:06:39,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:06:39,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:38" (1/3) ... [2020-10-24 15:06:39,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8ef1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:39, skipping insertion in model container [2020-10-24 15:06:39,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:39" (2/3) ... [2020-10-24 15:06:39,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8ef1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:39, skipping insertion in model container [2020-10-24 15:06:39,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:39" (3/3) ... [2020-10-24 15:06:39,926 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-10-24 15:06:39,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:06:39,948 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:06:39,963 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:06:40,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:06:40,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:06:40,013 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:06:40,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:06:40,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:06:40,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:06:40,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:06:40,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:06:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-24 15:06:40,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:06:40,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:40,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:40,044 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:40,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-10-24 15:06:40,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:40,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836738746] [2020-10-24 15:06:40,073 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 15:06:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:40,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:06:40,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:40,292 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 15:06:40,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:40,298 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 15:06:40,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836738746] [2020-10-24 15:06:40,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:40,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:06:40,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025514599] [2020-10-24 15:06:40,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:06:40,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:06:40,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:40,330 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-24 15:06:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:40,349 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-10-24 15:06:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:06:40,351 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-24 15:06:40,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:40,360 INFO L225 Difference]: With dead ends: 39 [2020-10-24 15:06:40,361 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:06:40,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:06:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:06:40,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:06:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:06:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-24 15:06:40,403 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-10-24 15:06:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:40,404 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-24 15:06:40,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:06:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-24 15:06:40,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:06:40,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:40,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:40,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:06:40,631 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:40,632 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-10-24 15:06:40,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:40,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372146957] [2020-10-24 15:06:40,634 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 15:06:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:06:40,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 15:06:40,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:06:40,827 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 15:06:40,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:06:40,830 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 15:06:40,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372146957] [2020-10-24 15:06:40,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:06:40,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 15:06:40,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284817035] [2020-10-24 15:06:40,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 15:06:40,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:06:40,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 15:06:40,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 15:06:40,835 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-10-24 15:06:40,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:40,866 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-10-24 15:06:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 15:06:40,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-24 15:06:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:40,868 INFO L225 Difference]: With dead ends: 24 [2020-10-24 15:06:40,869 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:06:40,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 15:06:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:06:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:06:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:06:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 15:06:40,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-10-24 15:06:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:40,875 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 15:06:40,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 15:06:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 15:06:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:06:40,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:40,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:41,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:06:41,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:41,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:41,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-10-24 15:06:41,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:41,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208115571] [2020-10-24 15:06:41,091 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 15:06:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:41,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:41,379 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:41,440 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:06:41,441 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:06:41,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:06:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:41 BoogieIcfgContainer [2020-10-24 15:06:41,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:06:41,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:06:41,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:06:41,692 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:06:41,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:39" (3/4) ... [2020-10-24 15:06:41,700 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:06:41,755 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:06:41,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:06:41,758 INFO L168 Benchmark]: Toolchain (without parser) took 2940.30 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 28.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:41,759 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:41,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.21 ms. Allocated memory is still 46.1 MB. Free memory was 23.0 MB in the beginning and 23.4 MB in the end (delta: -461.0 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:41,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.36 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 21.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:41,761 INFO L168 Benchmark]: Boogie Preprocessor took 40.57 ms. Allocated memory is still 46.1 MB. Free memory was 21.7 MB in the beginning and 20.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:41,762 INFO L168 Benchmark]: RCFGBuilder took 670.21 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 36.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:41,763 INFO L168 Benchmark]: TraceAbstraction took 1774.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 31.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:41,764 INFO L168 Benchmark]: Witness Printer took 64.25 ms. Allocated memory is still 56.6 MB. Free memory was 31.2 MB in the beginning and 28.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:41,769 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 37.7 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.21 ms. Allocated memory is still 46.1 MB. Free memory was 23.0 MB in the beginning and 23.4 MB in the end (delta: -461.0 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.36 ms. Allocated memory is still 46.1 MB. Free memory was 23.4 MB in the beginning and 21.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.57 ms. Allocated memory is still 46.1 MB. Free memory was 21.7 MB in the beginning and 20.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 670.21 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 36.0 MB in the end (delta: -15.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1774.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 31.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Witness Printer took 64.25 ms. Allocated memory is still 56.6 MB. Free memory was 31.2 MB in the beginning and 28.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] EXPR 0.0 [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...