./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/filter2_set.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/filter2_set.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d93111d47ee7b05ca67a232b0f3d0d8816844d8f .................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/filter2_set.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d93111d47ee7b05ca67a232b0f3d0d8816844d8f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 14:22:57,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:22:57,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:22:57,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:22:57,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:22:57,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:22:57,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:22:57,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:22:57,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:22:57,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:22:57,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:22:57,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:22:57,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:22:57,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:22:57,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:22:57,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:22:57,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:22:57,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:22:57,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:22:57,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:22:57,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:22:57,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:22:57,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:22:57,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:22:57,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:22:57,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:22:57,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:22:57,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:22:57,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:22:57,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:22:57,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:22:57,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:22:57,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:22:57,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:22:57,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:22:57,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:22:57,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:22:57,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:22:57,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:22:57,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:22:57,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:22:57,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 14:22:57,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:22:57,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:22:57,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:22:57,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:22:57,240 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:22:57,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:22:57,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:22:57,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 14:22:57,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:22:57,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:22:57,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:22:57,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:22:57,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:22:57,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:22:57,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:22:57,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:22:57,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:22:57,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:22:57,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:22:57,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:22:57,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:22:57,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:22:57,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:22:57,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:22:57,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:22:57,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 14:22:57,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 14:22:57,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:22:57,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:22:57,246 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d93111d47ee7b05ca67a232b0f3d0d8816844d8f [2020-12-02 14:22:57,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:22:57,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:22:57,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:22:57,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:22:57,680 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:22:57,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter2_set.c [2020-12-02 14:22:57,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d394c43/4a1877d2515e49df9ff1b85309a60471/FLAG275b5f198 [2020-12-02 14:22:58,513 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:22:58,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c [2020-12-02 14:22:58,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d394c43/4a1877d2515e49df9ff1b85309a60471/FLAG275b5f198 [2020-12-02 14:22:58,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d394c43/4a1877d2515e49df9ff1b85309a60471 [2020-12-02 14:22:58,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:22:58,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:22:58,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:22:58,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:22:58,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:22:58,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:22:58" (1/1) ... [2020-12-02 14:22:58,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1830983f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:58, skipping insertion in model container [2020-12-02 14:22:58,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:22:58" (1/1) ... [2020-12-02 14:22:58,879 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:22:58,903 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:22:59,125 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c[664,677] [2020-12-02 14:22:59,150 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:22:59,161 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:22:59,176 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c[664,677] [2020-12-02 14:22:59,186 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:22:59,204 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:22:59,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59 WrapperNode [2020-12-02 14:22:59,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:22:59,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:22:59,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:22:59,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:22:59,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:22:59,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:22:59,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:22:59,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:22:59,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... [2020-12-02 14:22:59,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:22:59,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:22:59,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:22:59,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:22:59,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:22:59,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 14:22:59,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:22:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:22:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:22:59,909 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:22:59,909 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-02 14:22:59,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:22:59 BoogieIcfgContainer [2020-12-02 14:22:59,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:22:59,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:22:59,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:22:59,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:22:59,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:22:58" (1/3) ... [2020-12-02 14:22:59,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419c00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:22:59, skipping insertion in model container [2020-12-02 14:22:59,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:22:59" (2/3) ... [2020-12-02 14:22:59,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419c00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:22:59, skipping insertion in model container [2020-12-02 14:22:59,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:22:59" (3/3) ... [2020-12-02 14:22:59,922 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2020-12-02 14:22:59,956 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:22:59,966 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 14:22:59,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 14:23:00,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:23:00,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:23:00,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:23:00,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:23:00,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:23:00,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:23:00,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:23:00,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:23:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-02 14:23:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-02 14:23:00,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:23:00,100 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] [2020-12-02 14:23:00,101 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:23:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:23:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash 983304290, now seen corresponding path program 1 times [2020-12-02 14:23:00,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:23:00,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550828954] [2020-12-02 14:23:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:23:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:23:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:00,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550828954] [2020-12-02 14:23:00,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:23:00,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 14:23:00,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810242731] [2020-12-02 14:23:00,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 14:23:00,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 14:23:00,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 14:23:00,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 14:23:00,416 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-02 14:23:00,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:23:00,439 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2020-12-02 14:23:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 14:23:00,441 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-12-02 14:23:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:23:00,456 INFO L225 Difference]: With dead ends: 51 [2020-12-02 14:23:00,456 INFO L226 Difference]: Without dead ends: 23 [2020-12-02 14:23:00,462 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 [2020-12-02 14:23:00,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-02 14:23:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-02 14:23:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-02 14:23:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-02 14:23:00,508 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2020-12-02 14:23:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:23:00,509 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-02 14:23:00,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 14:23:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-02 14:23:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-02 14:23:00,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:23:00,512 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] [2020-12-02 14:23:00,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 14:23:00,513 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:23:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:23:00,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1515433198, now seen corresponding path program 1 times [2020-12-02 14:23:00,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:23:00,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174140762] [2020-12-02 14:23:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:23:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:23:00,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:23:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:23:00,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:23:00,723 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 14:23:00,724 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:23:00,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 14:23:00,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:23:00 BoogieIcfgContainer [2020-12-02 14:23:00,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:23:00,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:23:00,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:23:00,765 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:23:00,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:22:59" (3/4) ... [2020-12-02 14:23:00,770 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:23:00,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:23:00,773 INFO L168 Benchmark]: Toolchain (without parser) took 1925.04 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.5 MB in the beginning and 35.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-12-02 14:23:00,774 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 48.2 MB. Free memory was 30.9 MB in the beginning and 30.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:23:00,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.10 ms. Allocated memory is still 48.2 MB. Free memory was 25.3 MB in the beginning and 28.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 14:23:00,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.64 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 26.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:23:00,777 INFO L168 Benchmark]: Boogie Preprocessor took 32.56 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 25.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:23:00,778 INFO L168 Benchmark]: RCFGBuilder took 623.04 ms. Allocated memory is still 48.2 MB. Free memory was 25.1 MB in the beginning and 22.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-02 14:23:00,779 INFO L168 Benchmark]: TraceAbstraction took 850.96 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 36.3 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:23:00,779 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 35.9 MB in the end (delta: 357.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:23:00,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 48.2 MB. Free memory was 30.9 MB in the beginning and 30.9 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.10 ms. Allocated memory is still 48.2 MB. Free memory was 25.3 MB in the beginning and 28.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.64 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 26.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.56 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 25.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 623.04 ms. Allocated memory is still 48.2 MB. Free memory was 25.1 MB in the beginning and 22.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 850.96 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.0 MB in the beginning and 36.3 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.42 ms. Allocated memory is still 58.7 MB. Free memory was 36.3 MB in the beginning and 35.9 MB in the end (delta: 357.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 55, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 57, overapproximation of to_real at line 43. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L15] COND FALSE !(!cond) [L15] COND FALSE !(!cond) [L15] COND FALSE !(!cond) [L15] COND FALSE !(!cond) [L15] COND FALSE !(!cond) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L15] COND FALSE !(!cond) [L15] COND FALSE !(!cond) [L43] S0 = 0 [L44] S = 0 [L46] i = 0 [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L15] COND FALSE !(!cond) [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L17] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 0.2.0-2880296 [2020-12-02 14:23:03,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:23:03,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:23:03,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:23:03,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:23:03,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:23:03,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:23:03,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:23:03,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:23:03,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:23:03,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:23:03,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:23:03,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:23:03,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:23:03,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:23:03,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:23:03,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:23:03,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:23:03,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:23:03,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:23:03,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:23:03,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:23:03,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:23:03,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:23:03,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:23:03,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:23:03,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:23:03,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:23:03,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:23:03,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:23:03,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:23:03,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:23:03,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:23:03,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:23:03,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:23:03,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:23:03,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:23:03,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:23:03,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:23:03,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:23:03,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:23:03,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 14:23:03,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:23:03,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:23:03,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:23:03,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:23:03,519 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:23:03,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:23:03,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:23:03,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:23:03,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:23:03,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:23:03,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:23:03,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:23:03,522 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 14:23:03,522 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 14:23:03,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:23:03,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:23:03,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:23:03,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:23:03,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:23:03,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:23:03,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:23:03,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:23:03,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:23:03,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:23:03,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:23:03,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:23:03,526 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 14:23:03,526 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 14:23:03,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:23:03,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:23:03,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 14:23:03,527 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d93111d47ee7b05ca67a232b0f3d0d8816844d8f [2020-12-02 14:23:04,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:23:04,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:23:04,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:23:04,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:23:04,081 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:23:04,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/filter2_set.c [2020-12-02 14:23:04,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f6e3e6f/da770ecc17a34d609a06d07b452c976e/FLAGe1715ed3d [2020-12-02 14:23:04,758 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:23:04,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c [2020-12-02 14:23:04,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f6e3e6f/da770ecc17a34d609a06d07b452c976e/FLAGe1715ed3d [2020-12-02 14:23:05,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f6e3e6f/da770ecc17a34d609a06d07b452c976e [2020-12-02 14:23:05,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:23:05,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:23:05,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:23:05,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:23:05,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:23:05,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf9c7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05, skipping insertion in model container [2020-12-02 14:23:05,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,171 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:23:05,196 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:23:05,396 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c[664,677] [2020-12-02 14:23:05,432 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:23:05,450 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:23:05,476 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/filter2_set.c[664,677] [2020-12-02 14:23:05,525 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:23:05,560 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:23:05,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05 WrapperNode [2020-12-02 14:23:05,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:23:05,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:23:05,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:23:05,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:23:05,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:23:05,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:23:05,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:23:05,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:23:05,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... [2020-12-02 14:23:05,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:23:05,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:23:05,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:23:05,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:23:05,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:23:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 14:23:05,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 14:23:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:23:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:23:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:23:08,711 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:23:08,712 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-02 14:23:08,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:23:08 BoogieIcfgContainer [2020-12-02 14:23:08,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:23:08,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:23:08,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:23:08,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:23:08,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:23:05" (1/3) ... [2020-12-02 14:23:08,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef8649a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:23:08, skipping insertion in model container [2020-12-02 14:23:08,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:05" (2/3) ... [2020-12-02 14:23:08,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef8649a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:23:08, skipping insertion in model container [2020-12-02 14:23:08,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:23:08" (3/3) ... [2020-12-02 14:23:08,723 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2020-12-02 14:23:08,740 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:23:08,744 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 14:23:08,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 14:23:08,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:23:08,787 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:23:08,787 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:23:08,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:23:08,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:23:08,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:23:08,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:23:08,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:23:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-12-02 14:23:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-02 14:23:08,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:23:08,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:23:08,812 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:23:08,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:23:08,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1654239617, now seen corresponding path program 1 times [2020-12-02 14:23:08,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:23:08,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752576077] [2020-12-02 14:23:08,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:23:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:23:10,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 14:23:10,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:23:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:10,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:23:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:10,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752576077] [2020-12-02 14:23:10,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:23:10,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 14:23:10,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522650127] [2020-12-02 14:23:10,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 14:23:10,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:23:10,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 14:23:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 14:23:10,650 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2020-12-02 14:23:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:23:10,672 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2020-12-02 14:23:10,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 14:23:10,674 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2020-12-02 14:23:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:23:10,684 INFO L225 Difference]: With dead ends: 87 [2020-12-02 14:23:10,684 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 14:23:10,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 14:23:10,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 14:23:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 14:23:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 14:23:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-12-02 14:23:10,727 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 39 [2020-12-02 14:23:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:23:10,727 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-12-02 14:23:10,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 14:23:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-12-02 14:23:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-02 14:23:10,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:23:10,729 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:23:10,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 14:23:10,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:23:10,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:23:10,945 INFO L82 PathProgramCache]: Analyzing trace with hash 405627211, now seen corresponding path program 1 times [2020-12-02 14:23:10,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:23:10,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035240021] [2020-12-02 14:23:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:23:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:23:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:23:12,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:23:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:12,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:23:12,824 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-02 14:23:12,825 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-02 14:23:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:12,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035240021] [2020-12-02 14:23:12,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:23:12,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-02 14:23:12,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934513937] [2020-12-02 14:23:12,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:23:12,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:23:12,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:23:12,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:23:12,853 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 4 states. [2020-12-02 14:23:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:23:13,181 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-12-02 14:23:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:23:13,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-02 14:23:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:23:13,183 INFO L225 Difference]: With dead ends: 69 [2020-12-02 14:23:13,183 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 14:23:13,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:23:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 14:23:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 14:23:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 14:23:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-12-02 14:23:13,192 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 39 [2020-12-02 14:23:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:23:13,192 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-12-02 14:23:13,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:23:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-12-02 14:23:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-02 14:23:13,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:23:13,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:23:13,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 14:23:13,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:23:13,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:23:13,409 INFO L82 PathProgramCache]: Analyzing trace with hash 265078601, now seen corresponding path program 1 times [2020-12-02 14:23:13,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:23:13,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625448768] [2020-12-02 14:23:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:23:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:23:15,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:23:15,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:23:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:15,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:23:15,203 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-02 14:23:15,204 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-02 14:23:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:23:15,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625448768] [2020-12-02 14:23:15,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:23:15,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-02 14:23:15,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817621865] [2020-12-02 14:23:15,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:23:15,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:23:15,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:23:15,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:23:15,262 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 4 states. [2020-12-02 14:23:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:23:18,039 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-12-02 14:23:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:23:18,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-02 14:23:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:23:18,210 INFO L225 Difference]: With dead ends: 56 [2020-12-02 14:23:18,210 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 14:23:18,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:23:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 14:23:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 14:23:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 14:23:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-12-02 14:23:18,220 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39 [2020-12-02 14:23:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:23:18,220 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-12-02 14:23:18,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:23:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-12-02 14:23:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-02 14:23:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:23:18,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:23:18,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 14:23:18,433 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:23:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:23:18,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1074425227, now seen corresponding path program 1 times [2020-12-02 14:23:18,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:23:18,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327856013] [2020-12-02 14:23:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-02 14:23:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:23:31,998 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 91 conjunts are in the unsatisfiable core [2020-12-02 14:23:32,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:23:32,049 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:23:32,404 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-02 14:23:32,413 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:23:32,976 WARN L197 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-02 14:23:32,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:23:33,526 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-02 14:23:33,856 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-02 14:23:33,871 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:23:33,873 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 14:23:35,384 WARN L197 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-02 14:23:35,398 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:23:35,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 14:23:55,999 WARN L197 SmtUtils]: Spent 13.18 s on a formula simplification that was a NOOP. DAG size: 79 [2020-12-02 14:23:56,026 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:24:07,510 WARN L197 SmtUtils]: Spent 10.31 s on a formula simplification that was a NOOP. DAG size: 130 [2020-12-02 14:24:25,316 WARN L197 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 14:24:25,328 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:24:41,022 WARN L197 SmtUtils]: Spent 13.25 s on a formula simplification that was a NOOP. DAG size: 95 [2020-12-02 14:24:41,035 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:24:58,872 WARN L197 SmtUtils]: Spent 13.67 s on a formula simplification that was a NOOP. DAG size: 106 [2020-12-02 14:24:58,885 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:25:19,655 WARN L197 SmtUtils]: Spent 10.95 s on a formula simplification that was a NOOP. DAG size: 175 [2020-12-02 14:25:33,825 WARN L197 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 99 [2020-12-02 14:25:33,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:25:57,196 WARN L197 SmtUtils]: Spent 16.79 s on a formula simplification that was a NOOP. DAG size: 122 [2020-12-02 14:25:57,209 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:26:19,525 WARN L197 SmtUtils]: Spent 17.28 s on a formula simplification that was a NOOP. DAG size: 133 [2020-12-02 14:26:19,553 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:26:50,605 WARN L197 SmtUtils]: Spent 12.00 s on a formula simplification that was a NOOP. DAG size: 220 [2020-12-02 14:27:01,900 WARN L197 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 126 [2020-12-02 14:27:01,910 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:27:01,912 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 14:27:52,106 WARN L197 SmtUtils]: Spent 24.40 s on a formula simplification that was a NOOP. DAG size: 154 [2020-12-02 14:27:52,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:27:52,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 14:28:51,132 WARN L197 SmtUtils]: Spent 31.56 s on a formula simplification that was a NOOP. DAG size: 170 [2020-12-02 14:28:51,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:29:42,884 WARN L197 SmtUtils]: Spent 23.32 s on a formula simplification that was a NOOP. DAG size: 289 [2020-12-02 14:30:17,269 WARN L197 SmtUtils]: Spent 11.43 s on a formula simplification that was a NOOP. DAG size: 163 [2020-12-02 14:30:17,279 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:31:18,463 WARN L197 SmtUtils]: Spent 31.44 s on a formula simplification that was a NOOP. DAG size: 185 [2020-12-02 14:31:18,475 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:32:21,803 WARN L197 SmtUtils]: Spent 32.35 s on a formula simplification that was a NOOP. DAG size: 196 [2020-12-02 14:32:21,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-02 14:32:48,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327856013] [2020-12-02 14:32:48,378 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. [2020-12-02 14:32:48,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [232416899] [2020-12-02 14:32:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-12-02 14:32:48,399 WARN L195 Executor]: External (cvc4 --incremental --print-success --lang smt --rewrite-divk) stderr output: (error "Error in option parsing: can't understand option `--rewrite-divk'") Please use --help to get help on command-line options. [2020-12-02 14:32:48,400 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (cvc4 --incremental --print-success --lang smt --rewrite-divk)Received EOF on stdin. stderr output: (error "Error in option parsing: can't understand option `--rewrite-divk'") Please use --help to get help on command-line options. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.createProcess(Executor.java:108) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.(Executor.java:83) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.(Scriptor.java:72) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.solverbuilder.SolverBuilder.buildScript(SolverBuilder.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.solverbuilder.SolverBuilder.buildAndInitializeSolver(SolverBuilder.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCvc4.constructManagedScript(IpTcStrategyModuleCvc4.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 34 more [2020-12-02 14:32:48,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848507165] [2020-12-02 14:32:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 14:36:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:36:14,371 WARN L261 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-02 14:36:14,374 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@6e97a950 [2020-12-02 14:36:14,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:36:14,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-02 14:36:14,374 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-12-02 14:36:14,375 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:36:14,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 14:36:14,828 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-02 14:36:14,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:36:14 BoogieIcfgContainer [2020-12-02 14:36:14,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:36:14,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:36:14,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:36:14,830 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:36:14,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:23:08" (3/4) ... [2020-12-02 14:36:14,835 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:36:14,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:36:14,837 INFO L168 Benchmark]: Toolchain (without parser) took 789692.97 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.7 MB in the beginning and 23.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:36:14,838 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.5 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:36:14,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.40 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 29.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:36:14,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.87 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 27.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:36:14,840 INFO L168 Benchmark]: Boogie Preprocessor took 96.33 ms. Allocated memory is still 52.4 MB. Free memory was 27.3 MB in the beginning and 25.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:36:14,841 INFO L168 Benchmark]: RCFGBuilder took 2945.47 ms. Allocated memory is still 52.4 MB. Free memory was 25.4 MB in the beginning and 26.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-12-02 14:36:14,842 INFO L168 Benchmark]: TraceAbstraction took 786113.57 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 24.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-02 14:36:14,842 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 62.9 MB. Free memory is still 23.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:36:14,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 21.6 MB in the beginning and 21.5 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 414.40 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 29.7 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.87 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 27.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.33 ms. Allocated memory is still 52.4 MB. Free memory was 27.3 MB in the beginning and 25.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2945.47 ms. Allocated memory is still 52.4 MB. Free memory was 25.4 MB in the beginning and 26.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 786113.57 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 26.5 MB in the beginning and 24.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.15 ms. Allocated memory is still 62.9 MB. Free memory is still 23.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] EXPR 0.69 [L31] A1 >= 0.69 && A1 <= 0.71 [L31] EXPR 0.71 [L31] A1 >= 0.69 && A1 <= 0.71 [L15] COND FALSE !(!cond) [L32] EXPR 1.31 [L32] EXPR -1.31 [L32] A2 >= -1.31 && A2 <= -1.29 [L32] EXPR 1.29 [L32] EXPR -1.29 [L32] A2 >= -1.31 && A2 <= -1.29 [L15] COND FALSE !(!cond) [L33] EXPR 1.09 [L33] A3 >= 1.09 && A3 <= 1.11 [L33] EXPR 1.11 [L33] A3 >= 1.09 && A3 <= 1.11 [L15] COND FALSE !(!cond) [L34] EXPR 1.39 [L34] B1 >= 1.39 && B1 <= 1.41 [L34] EXPR 1.41 [L34] B1 >= 1.39 && B1 <= 1.41 [L15] COND FALSE !(!cond) [L35] EXPR 0.71 [L35] EXPR -0.71 [L35] B2 >= -0.71 && B2 <= -0.69 [L35] EXPR 0.69 [L35] EXPR -0.69 [L35] B2 >= -0.71 && B2 <= -0.69 [L15] COND FALSE !(!cond) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] EXPR 0. [L40] E >= 0. && E <= 1. [L40] EXPR 1. [L40] E >= 0. && E <= 1. [L15] COND FALSE !(!cond) [L41] EXPR 0. [L41] E0 >= 0. && E0 <= 1. [L41] EXPR 1. [L41] E0 >= 0. && E0 <= 1. [L15] COND FALSE !(!cond) [L43] S0 = 0 [L44] S = 0 [L46] i = 0 [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] EXPR 0. [L51] E >= 0. && E <= 1. [L51] EXPR 1. [L51] E >= 0. && E <= 1. [L15] COND FALSE !(!cond) [L53] S1 = S0 [L54] S0 = S [L55] EXPR A1*E [L55] EXPR E0*A2 [L55] EXPR A1*E - E0*A2 [L55] EXPR E1*A3 [L55] EXPR A1*E - E0*A2 + E1*A3 [L55] EXPR S0*B1 [L55] EXPR A1*E - E0*A2 + E1*A3 + S0*B1 [L55] EXPR S1*B2 [L55] EXPR A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] EXPR 100. [L57] EXPR -100. [L57] S >= -100. && S <= 100. [L57] EXPR 100. [L57] S >= -100. && S <= 100. [L17] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 786.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 154 SDtfs, 2 SDslu, 158 SDs, 0 SdLazy, 43 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 9120 SizeOfPredicates, 4 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...