./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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/float_req_bl_1252b.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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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/float_req_bl_1252b.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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:11:50,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:11:50,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:11:50,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:11:50,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:11:50,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:11:50,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:11:50,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:11:50,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:11:50,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:11:50,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:11:50,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:11:50,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:11:50,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:11:50,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:11:50,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:11:50,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:11:50,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:11:50,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:11:50,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:11:50,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:11:50,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:11:50,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:11:50,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:11:50,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:11:50,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:11:50,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:11:50,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:11:50,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:11:50,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:11:50,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:11:50,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:11:50,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:11:50,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:11:50,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:11:50,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:11:50,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:11:50,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:11:50,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:11:50,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:11:50,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:11:50,557 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 15:11:50,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:11:50,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:11:50,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:11:50,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:11:50,595 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:11:50,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:11:50,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:11:50,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:11:50,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:11:50,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:11:50,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:11:50,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:11:50,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:11:50,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:11:50,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:11:50,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:11:50,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:11:50,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:11:50,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:11:50,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:11:50,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:11:50,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:11:50,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:11:50,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:11:50,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:11:50,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:11:50,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:11:50,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:11:50,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:11:50,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-10-24 15:11:51,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:11:51,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:11:51,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:11:51,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:11:51,082 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:11:51,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-10-24 15:11:51,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4a165b3c/69a943c3c2c94bdaa3c27cb23f33955f/FLAG99de3840c [2020-10-24 15:11:51,813 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:11:51,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-10-24 15:11:51,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4a165b3c/69a943c3c2c94bdaa3c27cb23f33955f/FLAG99de3840c [2020-10-24 15:11:52,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4a165b3c/69a943c3c2c94bdaa3c27cb23f33955f [2020-10-24 15:11:52,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:11:52,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:11:52,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:52,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:11:52,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:11:52,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34711694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52, skipping insertion in model container [2020-10-24 15:11:52,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,249 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:11:52,292 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:11:52,525 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:52,547 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:11:52,575 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:52,594 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:11:52,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52 WrapperNode [2020-10-24 15:11:52,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:52,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:52,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:11:52,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:11:52,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:52,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:11:52,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:11:52,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:11:52,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (1/1) ... [2020-10-24 15:11:52,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:11:52,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:11:52,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:11:52,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:11:52,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (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 15:11:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:11:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:11:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:11:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:11:52,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:11:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:11:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:11:53,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:11:53,265 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:11:53,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:53 BoogieIcfgContainer [2020-10-24 15:11:53,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:11:53,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:11:53,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:11:53,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:11:53,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:11:52" (1/3) ... [2020-10-24 15:11:53,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ac49f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:53, skipping insertion in model container [2020-10-24 15:11:53,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:52" (2/3) ... [2020-10-24 15:11:53,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ac49f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:53, skipping insertion in model container [2020-10-24 15:11:53,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:53" (3/3) ... [2020-10-24 15:11:53,277 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-10-24 15:11:53,289 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:11:53,295 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:11:53,309 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:11:53,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:11:53,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:11:53,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:11:53,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:11:53,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:11:53,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:11:53,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:11:53,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:11:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 15:11:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 15:11:53,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:53,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:53,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:53,382 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 15:11:53,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:53,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872486764] [2020-10-24 15:11:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:53,560 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 15:11:53,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872486764] [2020-10-24 15:11:53,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:53,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:11:53,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300775912] [2020-10-24 15:11:53,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:11:53,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:11:53,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:11:53,590 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 15:11:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:53,613 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 15:11:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:11:53,615 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 15:11:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:53,626 INFO L225 Difference]: With dead ends: 63 [2020-10-24 15:11:53,626 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 15:11:53,630 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 15:11:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 15:11:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 15:11:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 15:11:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 15:11:53,676 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 15:11:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:53,677 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 15:11:53,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:11:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 15:11:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:11:53,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:53,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:53,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:11:53,679 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:53,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 15:11:53,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:53,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624614753] [2020-10-24 15:11:53,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:53,857 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 15:11:53,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624614753] [2020-10-24 15:11:53,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:53,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:53,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268474817] [2020-10-24 15:11:53,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:53,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:53,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:53,863 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-10-24 15:11:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:53,978 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-24 15:11:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:53,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-24 15:11:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:53,981 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:11:53,981 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 15:11:53,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:11:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 15:11:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-24 15:11:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:54,002 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 15:11:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:54,003 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:54,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:11:54,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:54,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:54,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:11:54,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-10-24 15:11:54,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:54,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933966382] [2020-10-24 15:11:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:54,129 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 15:11:54,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933966382] [2020-10-24 15:11:54,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:54,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:54,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177593423] [2020-10-24 15:11:54,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:54,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:54,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:54,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:54,132 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:11:54,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:54,199 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 15:11:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:54,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 15:11:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:54,201 INFO L225 Difference]: With dead ends: 55 [2020-10-24 15:11:54,201 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:11:54,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:11:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:11:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 15:11:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:54,208 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-10-24 15:11:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:54,209 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:54,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:11:54,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:54,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:54,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 15:11:54,210 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:54,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:54,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-10-24 15:11:54,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:54,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092531282] [2020-10-24 15:11:54,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:54,261 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 15:11:54,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092531282] [2020-10-24 15:11:54,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:54,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:54,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810449077] [2020-10-24 15:11:54,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:54,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:54,264 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:11:54,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:54,320 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-24 15:11:54,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:54,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-24 15:11:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:54,321 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:11:54,322 INFO L226 Difference]: Without dead ends: 48 [2020-10-24 15:11:54,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:11:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-24 15:11:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-10-24 15:11:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:54,328 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-10-24 15:11:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:54,329 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:54,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:11:54,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:54,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:54,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 15:11:54,330 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:54,331 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-10-24 15:11:54,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:54,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865889612] [2020-10-24 15:11:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:54,394 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 15:11:54,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865889612] [2020-10-24 15:11:54,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:54,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:54,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393556019] [2020-10-24 15:11:54,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:54,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:54,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:54,399 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:11:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:54,469 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 15:11:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:54,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 15:11:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:54,471 INFO L225 Difference]: With dead ends: 55 [2020-10-24 15:11:54,471 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:11:54,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:11:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:11:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 15:11:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:54,478 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-10-24 15:11:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:54,479 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:54,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:11:54,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:54,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:54,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 15:11:54,480 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:54,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:54,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 15:11:54,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:54,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907693536] [2020-10-24 15:11:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:11:54,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:11:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:11:54,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:11:54,563 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:11:54,563 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:11:54,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 15:11:54,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:11:54 BoogieIcfgContainer [2020-10-24 15:11:54,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:11:54,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:11:54,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:11:54,599 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:11:54,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:53" (3/4) ... [2020-10-24 15:11:54,604 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:11:54,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:11:54,607 INFO L168 Benchmark]: Toolchain (without parser) took 2409.86 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 20.9 MB in the beginning and 34.1 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,608 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 35.7 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:54,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.22 ms. Allocated memory is still 44.0 MB. Free memory was 20.3 MB in the beginning and 19.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.65 ms. Allocated memory is still 44.0 MB. Free memory was 19.2 MB in the beginning and 27.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,611 INFO L168 Benchmark]: Boogie Preprocessor took 32.82 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,612 INFO L168 Benchmark]: RCFGBuilder took 576.73 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 26.5 MB in the end (delta: -645.7 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,613 INFO L168 Benchmark]: TraceAbstraction took 1329.32 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.3 MB in the beginning and 34.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,613 INFO L168 Benchmark]: Witness Printer took 5.39 ms. Allocated memory is still 67.1 MB. Free memory was 34.7 MB in the beginning and 34.1 MB in the end (delta: 585.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:54,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 35.7 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.22 ms. Allocated memory is still 44.0 MB. Free memory was 20.3 MB in the beginning and 19.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.65 ms. Allocated memory is still 44.0 MB. Free memory was 19.2 MB in the beginning and 27.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.82 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.73 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 26.5 MB in the end (delta: -645.7 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1329.32 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.3 MB in the beginning and 34.7 MB in the end (delta: -8.4 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.39 ms. Allocated memory is still 67.1 MB. Free memory was 34.7 MB in the beginning and 34.1 MB in the end (delta: 585.1 kB). Peak memory consumption was 2.1 MB. 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 someUnaryFLOAT_SMToperation at line 76, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 80. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 15:11:57,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:11:57,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:11:57,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:11:57,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:11:57,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:11:57,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:11:57,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:11:57,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:11:57,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:11:57,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:11:57,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:11:57,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:11:57,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:11:57,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:11:57,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:11:57,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:11:57,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:11:57,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:11:57,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:11:57,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:11:57,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:11:57,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:11:57,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:11:57,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:11:57,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:11:57,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:11:57,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:11:57,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:11:57,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:11:57,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:11:57,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:11:57,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:11:57,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:11:57,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:11:57,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:11:57,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:11:57,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:11:57,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:11:57,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:11:57,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:11:57,543 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 15:11:57,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:11:57,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:11:57,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:11:57,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:11:57,604 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:11:57,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:11:57,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:11:57,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:11:57,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:11:57,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:11:57,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:11:57,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:11:57,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:11:57,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:11:57,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:11:57,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:11:57,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:11:57,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:11:57,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:11:57,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:11:57,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:11:57,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:11:57,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:11:57,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:11:57,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:11:57,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:11:57,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:11:57,610 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:11:57,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:11:57,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:11:57,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:11:57,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-10-24 15:11:58,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:11:58,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:11:58,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:11:58,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:11:58,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:11:58,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-10-24 15:11:58,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c46b7dca9/27eb38b2a064462998f6b559c7e89839/FLAGb316c2448 [2020-10-24 15:11:58,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:11:58,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-10-24 15:11:58,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c46b7dca9/27eb38b2a064462998f6b559c7e89839/FLAGb316c2448 [2020-10-24 15:11:59,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c46b7dca9/27eb38b2a064462998f6b559c7e89839 [2020-10-24 15:11:59,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:11:59,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:11:59,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:59,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:11:59,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:11:59,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8c6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59, skipping insertion in model container [2020-10-24 15:11:59,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,265 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:11:59,283 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:11:59,527 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:59,544 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:11:59,573 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:59,601 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:11:59,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59 WrapperNode [2020-10-24 15:11:59,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:59,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:59,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:11:59,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:11:59,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:59,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:11:59,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:11:59,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:11:59,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (1/1) ... [2020-10-24 15:11:59,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:11:59,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:11:59,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:11:59,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:11:59,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (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 15:11:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:11:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:11:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:11:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:11:59,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:11:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 15:11:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 15:11:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:12:00,558 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:12:00,559 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:12:00,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:12:00 BoogieIcfgContainer [2020-10-24 15:12:00,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:12:00,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:12:00,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:12:00,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:12:00,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:11:59" (1/3) ... [2020-10-24 15:12:00,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b46a420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:12:00, skipping insertion in model container [2020-10-24 15:12:00,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:59" (2/3) ... [2020-10-24 15:12:00,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b46a420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:12:00, skipping insertion in model container [2020-10-24 15:12:00,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:12:00" (3/3) ... [2020-10-24 15:12:00,576 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-10-24 15:12:00,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:12:00,597 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:12:00,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:12:00,659 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:12:00,659 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:12:00,660 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:12:00,660 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:12:00,660 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:12:00,660 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:12:00,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:12:00,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:12:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 15:12:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 15:12:00,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:00,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:00,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 15:12:00,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:00,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12392709] [2020-10-24 15:12:00,726 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 15:12:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:00,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:12:00,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:00,860 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 15:12:00,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:00,865 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 15:12:00,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12392709] [2020-10-24 15:12:00,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:00,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:12:00,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428430456] [2020-10-24 15:12:00,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:12:00,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:00,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:12:00,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:12:00,893 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 15:12:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:00,916 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 15:12:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:12:00,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 15:12:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:00,929 INFO L225 Difference]: With dead ends: 63 [2020-10-24 15:12:00,930 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 15:12:00,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:12:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 15:12:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 15:12:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 15:12:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 15:12:00,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 15:12:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:00,976 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 15:12:00,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:12:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 15:12:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:12:00,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:00,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:01,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:12:01,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:01,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 15:12:01,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:01,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423315745] [2020-10-24 15:12:01,199 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 15:12:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:01,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:12:01,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:01,324 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 15:12:01,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:01,351 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 15:12:01,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423315745] [2020-10-24 15:12:01,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:01,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:12:01,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898401466] [2020-10-24 15:12:01,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:12:01,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:01,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:12:01,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:12:01,356 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-10-24 15:12:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:01,461 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-24 15:12:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:12:01,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-24 15:12:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:01,464 INFO L225 Difference]: With dead ends: 68 [2020-10-24 15:12:01,464 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 15:12:01,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 15:12:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 15:12:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-24 15:12:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:12:01,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:12:01,474 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 15:12:01,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:01,475 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:12:01,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:12:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:12:01,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:12:01,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:01,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:01,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:12:01,691 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 15:12:01,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:01,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458520809] [2020-10-24 15:12:01,694 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 15:12:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:01,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 15:12:01,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:01,843 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 15:12:01,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:01,866 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 15:12:01,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458520809] [2020-10-24 15:12:01,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:01,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-24 15:12:01,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276179270] [2020-10-24 15:12:01,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:12:01,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:01,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:12:01,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:12:01,871 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:12:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:01,950 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-10-24 15:12:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:12:01,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 15:12:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:01,952 INFO L225 Difference]: With dead ends: 52 [2020-10-24 15:12:01,952 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:12:01,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:12:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:12:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:12:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:12:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-24 15:12:01,961 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-10-24 15:12:01,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:01,962 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-24 15:12:01,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:12:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-24 15:12:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 15:12:01,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:01,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:02,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:12:02,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:02,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-10-24 15:12:02,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:02,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056531378] [2020-10-24 15:12:02,182 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 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 15:12:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:02,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:12:02,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:02,311 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 15:12:02,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:02,335 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 15:12:02,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056531378] [2020-10-24 15:12:02,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:02,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:12:02,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535260935] [2020-10-24 15:12:02,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:12:02,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:02,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:12:02,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:12:02,339 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-10-24 15:12:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:02,403 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-24 15:12:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:12:02,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-24 15:12:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:02,405 INFO L225 Difference]: With dead ends: 61 [2020-10-24 15:12:02,405 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 15:12:02,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 15:12:02,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 15:12:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-10-24 15:12:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:12:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-24 15:12:02,411 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-10-24 15:12:02,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:02,411 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-24 15:12:02,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:12:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-24 15:12:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:12:02,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:02,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:02,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 15:12:02,626 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-10-24 15:12:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:02,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057938792] [2020-10-24 15:12:02,629 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 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-24 15:12:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:02,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 15:12:02,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:02,893 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 15:12:02,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:02,922 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 15:12:02,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057938792] [2020-10-24 15:12:02,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:02,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 15:12:02,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784125305] [2020-10-24 15:12:02,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:12:02,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:02,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:12:02,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:12:02,926 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-10-24 15:12:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:02,945 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-10-24 15:12:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 15:12:02,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 15:12:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:02,947 INFO L225 Difference]: With dead ends: 38 [2020-10-24 15:12:02,948 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 15:12:02,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:12:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 15:12:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 15:12:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:12:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-24 15:12:02,956 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-10-24 15:12:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:02,956 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-24 15:12:02,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:12:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-24 15:12:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:12:02,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:02,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:03,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 15:12:03,172 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-10-24 15:12:03,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:03,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588981965] [2020-10-24 15:12:03,175 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 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-24 15:12:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:03,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:12:03,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:03,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 15:12:03,425 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 15:12:03,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:03,564 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 15:12:03,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588981965] [2020-10-24 15:12:03,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:03,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-24 15:12:03,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349054972] [2020-10-24 15:12:03,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 15:12:03,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:03,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 15:12:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 15:12:03,568 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-10-24 15:12:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:03,816 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-24 15:12:03,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 15:12:03,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-24 15:12:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:03,818 INFO L225 Difference]: With dead ends: 40 [2020-10-24 15:12:03,818 INFO L226 Difference]: Without dead ends: 37 [2020-10-24 15:12:03,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 15:12:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-24 15:12:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-24 15:12:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 15:12:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-24 15:12:03,826 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-10-24 15:12:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:03,827 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-24 15:12:03,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 15:12:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-24 15:12:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-24 15:12:03,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:03,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:04,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 15:12:04,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:04,043 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-10-24 15:12:04,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:04,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525546121] [2020-10-24 15:12:04,044 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 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-24 15:12:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:12:04,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 15:12:04,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:12:04,240 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 15:12:04,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:12:04,333 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 15:12:04,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525546121] [2020-10-24 15:12:04,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:12:04,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 15:12:04,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4655458] [2020-10-24 15:12:04,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 15:12:04,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:12:04,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 15:12:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-24 15:12:04,339 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2020-10-24 15:12:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:12:04,499 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-24 15:12:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 15:12:04,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-24 15:12:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:12:04,501 INFO L225 Difference]: With dead ends: 43 [2020-10-24 15:12:04,502 INFO L226 Difference]: Without dead ends: 23 [2020-10-24 15:12:04,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-24 15:12:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-24 15:12:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-24 15:12:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-24 15:12:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-10-24 15:12:04,517 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-10-24 15:12:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:12:04,517 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-10-24 15:12:04,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 15:12:04,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-10-24 15:12:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 15:12:04,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:12:04,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:12:04,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 15:12:04,735 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:12:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:12:04,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-10-24 15:12:04,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:12:04,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013556597] [2020-10-24 15:12:04,738 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 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-24 15:12:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:12:04,845 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:12:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:12:04,966 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:12:05,032 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:12:05,032 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:12:05,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 15:12:05,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:12:05 BoogieIcfgContainer [2020-10-24 15:12:05,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:12:05,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:12:05,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:12:05,283 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:12:05,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:12:00" (3/4) ... [2020-10-24 15:12:05,286 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:12:05,349 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:12:05,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:12:05,352 INFO L168 Benchmark]: Toolchain (without parser) took 6112.81 ms. Allocated memory was 41.9 MB in the beginning and 62.9 MB in the end (delta: 21.0 MB). Free memory was 19.9 MB in the beginning and 45.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,353 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 41.9 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:12:05,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.48 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 19.4 MB in the end (delta: -206.9 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.97 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 19.4 MB in the beginning and 37.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,355 INFO L168 Benchmark]: Boogie Preprocessor took 49.28 ms. Allocated memory is still 52.4 MB. Free memory was 37.7 MB in the beginning and 35.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,356 INFO L168 Benchmark]: RCFGBuilder took 845.78 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 27.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,357 INFO L168 Benchmark]: TraceAbstraction took 4715.83 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 24.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,358 INFO L168 Benchmark]: Witness Printer took 67.12 ms. Allocated memory is still 62.9 MB. Free memory was 24.8 MB in the beginning and 45.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:12:05,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 41.9 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.48 ms. Allocated memory is still 41.9 MB. Free memory was 19.2 MB in the beginning and 19.4 MB in the end (delta: -206.9 kB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.97 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 19.4 MB in the beginning and 37.7 MB in the end (delta: -18.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.28 ms. Allocated memory is still 52.4 MB. Free memory was 37.7 MB in the beginning and 35.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 845.78 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 27.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4715.83 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 24.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 67.12 ms. Allocated memory is still 62.9 MB. Free memory was 24.8 MB in the beginning and 45.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L75] EXPR 0.0f [L75] float x = 0.0f; [L76] EXPR 0.0f [L76] EXPR -0.0f [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L46] COND FALSE !(__fpclassify_float(x) == 0) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] EXPR x > y ? x : y [L53] return x > y ? x : y; [L77] float res = fmax_float(x, y); [L80] EXPR 0.0f [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L57] __uint32_t w; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (w) = gf_u.word [L65] return (w & 0x80000000) != 0; [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 175 SDslu, 301 SDs, 0 SdLazy, 100 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 45 QuantifiedInterpolants, 32597 SizeOfPredicates, 26 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...