./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c9e998caa04d32cca34cd2b8b08ef43d5a04bbb ........................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c9e998caa04d32cca34cd2b8b08ef43d5a04bbb .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:18:59,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:18:59,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:18:59,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:18:59,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:18:59,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:18:59,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:18:59,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:18:59,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:18:59,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:18:59,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:18:59,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:18:59,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:18:59,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:18:59,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:18:59,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:18:59,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:18:59,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:18:59,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:18:59,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:18:59,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:18:59,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:18:59,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:18:59,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:18:59,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:18:59,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:18:59,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:18:59,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:18:59,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:18:59,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:18:59,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:18:59,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:18:59,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:18:59,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:18:59,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:18:59,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:18:59,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:18:59,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:18:59,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:18:59,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:18:59,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:18:59,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 14:18:59,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:18:59,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:18:59,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:18:59,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:18:59,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:18:59,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:18:59,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:18:59,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 14:18:59,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:18:59,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:18:59,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:18:59,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:18:59,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:18:59,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:18:59,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:18:59,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:18:59,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:18:59,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:18:59,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:18:59,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:18:59,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:18:59,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:18:59,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:18:59,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:18:59,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:18:59,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 14:18:59,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 14:18:59,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:18:59,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:18:59,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9e998caa04d32cca34cd2b8b08ef43d5a04bbb [2020-10-24 14:19:00,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:19:00,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:19:00,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:19:00,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:19:00,248 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:19:00,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2020-10-24 14:19:00,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/069e78b8e/c40673f52ec3474dab411c4582a3ebc9/FLAGf7b7229ab [2020-10-24 14:19:01,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:19:01,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2020-10-24 14:19:01,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/069e78b8e/c40673f52ec3474dab411c4582a3ebc9/FLAGf7b7229ab [2020-10-24 14:19:01,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/069e78b8e/c40673f52ec3474dab411c4582a3ebc9 [2020-10-24 14:19:01,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:19:01,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:19:01,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:19:01,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:19:01,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:19:01,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2583680b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01, skipping insertion in model container [2020-10-24 14:19:01,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,365 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:19:01,401 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:19:01,755 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:19:01,776 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:19:01,845 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:19:01,877 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:19:01,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01 WrapperNode [2020-10-24 14:19:01,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:19:01,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:19:01,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:19:01,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:19:01,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:19:01,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:19:01,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:19:01,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:19:01,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:01,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... [2020-10-24 14:19:02,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:19:02,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:19:02,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:19:02,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:19:02,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:19:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 14:19:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:19:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:19:02,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:19:02,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:19:02,574 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 14:19:02,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:19:02 BoogieIcfgContainer [2020-10-24 14:19:02,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:19:02,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:19:02,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:19:02,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:19:02,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:19:01" (1/3) ... [2020-10-24 14:19:02,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2714ee98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:19:02, skipping insertion in model container [2020-10-24 14:19:02,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:01" (2/3) ... [2020-10-24 14:19:02,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2714ee98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:19:02, skipping insertion in model container [2020-10-24 14:19:02,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:19:02" (3/3) ... [2020-10-24 14:19:02,601 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2020-10-24 14:19:02,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:19:02,637 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-24 14:19:02,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-24 14:19:02,680 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:19:02,680 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:19:02,680 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:19:02,681 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:19:02,681 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:19:02,681 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:19:02,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:19:02,681 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:19:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-24 14:19:02,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 14:19:02,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:19:02,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:19:02,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:19:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:19:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash 847108019, now seen corresponding path program 1 times [2020-10-24 14:19:02,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 14:19:02,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692462732] [2020-10-24 14:19:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 14:19:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:19:02,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:19:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 14:19:02,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 14:19:02,921 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 14:19:02,922 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 14:19:02,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 14:19:02,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:19:02 BoogieIcfgContainer [2020-10-24 14:19:02,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 14:19:02,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 14:19:02,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 14:19:02,963 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 14:19:02,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:19:02" (3/4) ... [2020-10-24 14:19:02,968 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 14:19:02,968 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 14:19:02,971 INFO L168 Benchmark]: Toolchain (without parser) took 1640.83 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.3 MB in the beginning and 26.9 MB in the end (delta: -618.7 kB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-10-24 14:19:02,972 INFO L168 Benchmark]: CDTParser took 1.13 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.2 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:19:02,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 539.39 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 26.4 MB in the end (delta: -702.7 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:19:02,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.82 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 24.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:19:02,975 INFO L168 Benchmark]: Boogie Preprocessor took 56.77 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:19:02,976 INFO L168 Benchmark]: RCFGBuilder took 573.76 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 40.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-10-24 14:19:02,977 INFO L168 Benchmark]: TraceAbstraction took 380.77 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 27.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 14:19:02,978 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 26.9 MB in the end (delta: 281.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:19:02,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.2 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 539.39 ms. Allocated memory is still 48.2 MB. Free memory was 25.7 MB in the beginning and 26.4 MB in the end (delta: -702.7 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.82 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 24.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.77 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 573.76 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 40.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 380.77 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 27.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 58.7 MB. Free memory was 27.2 MB in the beginning and 26.9 MB in the end (delta: 281.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 41, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 45. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __return_134; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L19] double main__E0; [L20] double main__E1; [L21] double main__S; [L22] int main__i; [L23] main__E1 = 0 [L24] main__S = 0 [L25] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L26] COND TRUE main__i <= 1000000 [L28] main__E0 = __VERIFIER_nondet_double() [L29] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L30] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L32] COND TRUE main__E0 <= 1.0 [L34] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L35] COND TRUE main____CPAchecker_TMP_0 != 0 [L37] int main____CPAchecker_TMP_1; [L38] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L39] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L41] main__S = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L43] main__E1 = main__E0 [L44] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L45] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L162] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L52] int __tmp_1; [L53] __tmp_1 = main____CPAchecker_TMP_2 [L54] int __VERIFIER_assert__cond; [L55] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L56] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L4] __assert_fail("0", "filter1.c.v+lhb-reducer.c", 4, "reach_error") VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 14:19:05,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 14:19:05,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 14:19:05,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 14:19:05,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 14:19:05,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 14:19:05,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 14:19:05,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 14:19:05,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 14:19:05,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 14:19:05,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 14:19:05,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 14:19:05,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 14:19:05,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 14:19:05,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 14:19:05,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 14:19:05,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 14:19:05,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 14:19:05,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 14:19:05,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 14:19:05,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 14:19:05,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 14:19:05,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 14:19:05,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 14:19:05,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 14:19:05,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 14:19:05,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 14:19:05,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 14:19:05,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 14:19:05,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 14:19:05,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 14:19:05,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 14:19:05,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 14:19:05,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 14:19:05,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 14:19:05,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 14:19:05,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 14:19:05,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 14:19:05,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 14:19:05,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 14:19:05,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 14:19:05,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 14:19:05,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 14:19:05,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 14:19:05,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 14:19:05,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 14:19:05,886 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 14:19:05,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 14:19:05,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 14:19:05,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 14:19:05,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 14:19:05,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 14:19:05,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 14:19:05,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 14:19:05,888 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 14:19:05,889 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 14:19:05,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 14:19:05,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 14:19:05,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 14:19:05,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 14:19:05,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 14:19:05,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 14:19:05,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 14:19:05,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 14:19:05,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:19:05,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 14:19:05,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 14:19:05,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 14:19:05,891 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 14:19:05,892 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 14:19:05,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 14:19:05,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 14:19:05,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 14:19:05,892 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9e998caa04d32cca34cd2b8b08ef43d5a04bbb [2020-10-24 14:19:06,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 14:19:06,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 14:19:06,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 14:19:06,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 14:19:06,411 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 14:19:06,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2020-10-24 14:19:06,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68667fec/ff481c9e6c1241f38b6f78e2f72176f0/FLAG66da47da0 [2020-10-24 14:19:07,225 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 14:19:07,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2020-10-24 14:19:07,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68667fec/ff481c9e6c1241f38b6f78e2f72176f0/FLAG66da47da0 [2020-10-24 14:19:07,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68667fec/ff481c9e6c1241f38b6f78e2f72176f0 [2020-10-24 14:19:07,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 14:19:07,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 14:19:07,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 14:19:07,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 14:19:07,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 14:19:07,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:07,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f335ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07, skipping insertion in model container [2020-10-24 14:19:07,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:07,626 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 14:19:07,666 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 14:19:07,855 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:19:07,879 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 14:19:07,919 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 14:19:07,940 INFO L217 MainTranslator]: Completed translation [2020-10-24 14:19:07,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07 WrapperNode [2020-10-24 14:19:07,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 14:19:07,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 14:19:07,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 14:19:07,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 14:19:07,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:07,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:07,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 14:19:08,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 14:19:08,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 14:19:08,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 14:19:08,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... [2020-10-24 14:19:08,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 14:19:08,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 14:19:08,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 14:19:08,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 14:19:08,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 14:19:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 14:19:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 14:19:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 14:19:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 14:19:08,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 14:19:12,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 14:19:12,955 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-24 14:19:12,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:19:12 BoogieIcfgContainer [2020-10-24 14:19:12,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 14:19:12,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 14:19:12,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 14:19:12,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 14:19:12,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:19:07" (1/3) ... [2020-10-24 14:19:12,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef2ea34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:19:12, skipping insertion in model container [2020-10-24 14:19:12,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:19:07" (2/3) ... [2020-10-24 14:19:12,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef2ea34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:19:12, skipping insertion in model container [2020-10-24 14:19:12,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:19:12" (3/3) ... [2020-10-24 14:19:12,969 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2020-10-24 14:19:12,982 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 14:19:12,988 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-24 14:19:13,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-24 14:19:13,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 14:19:13,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 14:19:13,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 14:19:13,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 14:19:13,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 14:19:13,030 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 14:19:13,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 14:19:13,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 14:19:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-24 14:19:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 14:19:13,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:19:13,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:19:13,060 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:19:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:19:13,068 INFO L82 PathProgramCache]: Analyzing trace with hash 847108019, now seen corresponding path program 1 times [2020-10-24 14:19:13,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:19:13,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454785354] [2020-10-24 14:19:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 14:19:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:19:13,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:19:13,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:19:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:19:13,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:19:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:19:15,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454785354] [2020-10-24 14:19:15,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:19:15,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 14:19:15,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834294400] [2020-10-24 14:19:16,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:19:16,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:19:16,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:19:16,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-10-24 14:19:16,027 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2020-10-24 14:19:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:19:30,974 INFO L93 Difference]: Finished difference Result 84 states and 117 transitions. [2020-10-24 14:19:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 14:19:30,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-24 14:19:30,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:19:30,986 INFO L225 Difference]: With dead ends: 84 [2020-10-24 14:19:30,987 INFO L226 Difference]: Without dead ends: 53 [2020-10-24 14:19:30,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2020-10-24 14:19:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-24 14:19:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2020-10-24 14:19:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-24 14:19:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-10-24 14:19:31,039 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2020-10-24 14:19:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:19:31,039 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-10-24 14:19:31,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:19:31,040 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-10-24 14:19:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 14:19:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:19:31,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:19:31,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 14:19:31,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:19:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:19:31,259 INFO L82 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2020-10-24 14:19:31,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:19:31,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225733186] [2020-10-24 14:19:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 14:19:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:19:31,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-24 14:19:31,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:19:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:19:31,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:19:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:19:31,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225733186] [2020-10-24 14:19:31,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:19:31,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 14:19:31,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888308677] [2020-10-24 14:19:31,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 14:19:31,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:19:31,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 14:19:31,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 14:19:31,842 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 6 states. [2020-10-24 14:19:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 14:19:32,200 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-10-24 14:19:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 14:19:32,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-24 14:19:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 14:19:32,202 INFO L225 Difference]: With dead ends: 52 [2020-10-24 14:19:32,202 INFO L226 Difference]: Without dead ends: 50 [2020-10-24 14:19:32,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 14:19:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-24 14:19:32,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2020-10-24 14:19:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-24 14:19:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-24 14:19:32,213 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2020-10-24 14:19:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 14:19:32,213 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-24 14:19:32,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 14:19:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-24 14:19:32,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 14:19:32,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 14:19:32,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 14:19:32,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 14:19:32,430 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 14:19:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 14:19:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 607965829, now seen corresponding path program 1 times [2020-10-24 14:19:32,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 14:19:32,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174614023] [2020-10-24 14:19:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 14:19:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 14:19:32,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 14:19:32,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 14:19:33,219 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-10-24 14:19:33,469 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-10-24 14:19:33,880 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-24 14:19:34,327 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-24 14:19:40,690 WARN L193 SmtUtils]: Spent 3.73 s on a formula simplification that was a NOOP. DAG size: 77 [2020-10-24 14:19:49,146 WARN L193 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 14:19:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:19:49,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 14:19:55,024 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet33_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet32_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet31_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet16_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__S~0_22 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet15_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet31_5|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet15_8|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet16_12|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 62 52) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 51 0) v_ULTIMATE.start_main_~main__S~0_22))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet33_5|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet32_5|)))) (or (not (= .cse0 ((_ to_fp 11 53) c_~CRM (/ 999.0 1000.0)))) (not (= .cse1 (fp.mul c_~CRM .cse0 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__S~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__S~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__S~0))))) (not (= ((_ to_fp 11 53) c_~CRM 10000.0) .cse2)) (not (= (fp.neg .cse2) .cse3)) (fp.geq .cse4 .cse3) (not (= (fp.sub c_~CRM .cse5 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E1~0))) .cse4)) (not (= .cse5 (fp.add c_~CRM .cse1 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E0~0)))))))) is different from true [2020-10-24 14:19:57,208 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.leq (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E0~0)) (fp ((_ extract 63 63) |c_ULTIMATE.start_main_#t~nondet12|) ((_ extract 62 52) |c_ULTIMATE.start_main_#t~nondet12|) ((_ extract 51 0) |c_ULTIMATE.start_main_#t~nondet12|)))) (forall ((|v_ULTIMATE.start_main_#t~nondet33_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet32_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet31_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet16_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__S~0_22 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet15_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet31_5|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet15_8|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet16_12|))) (.cse4 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 62 52) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 51 0) v_ULTIMATE.start_main_~main__S~0_22))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet33_5|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet32_5|)))) (or (not (= .cse0 ((_ to_fp 11 53) c_~CRM (/ 999.0 1000.0)))) (not (= .cse1 (fp.mul c_~CRM .cse0 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__S~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__S~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__S~0))))) (not (= ((_ to_fp 11 53) c_~CRM 10000.0) .cse2)) (not (= (fp.neg .cse2) .cse3)) (fp.geq .cse4 .cse3) (not (= (fp.sub c_~CRM .cse5 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E1~0))) .cse4)) (not (= .cse5 (fp.add c_~CRM .cse1 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E0~0))))))))) is different from true [2020-10-24 14:19:59,343 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet33_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet32_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet31_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet16_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__S~0_22 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet12_9| (_ BitVec 64)) (ULTIMATE.start_main_~main__E0~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet15_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet31_5|))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet15_8|))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet16_12|))) (.cse6 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 62 52) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 51 0) v_ULTIMATE.start_main_~main__S~0_22))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet12_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet12_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet12_9|))) (.cse7 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet33_5|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet32_5|))) (.cse1 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) ULTIMATE.start_main_~main__E0~0)))) (or (not (= .cse0 ((_ to_fp 11 53) c_~CRM (/ 999.0 1000.0)))) (not (fp.leq .cse1 .cse2)) (not (fp.geq .cse1 (fp ((_ extract 63 63) |c_ULTIMATE.start_main_#t~nondet11|) ((_ extract 62 52) |c_ULTIMATE.start_main_#t~nondet11|) ((_ extract 51 0) |c_ULTIMATE.start_main_#t~nondet11|)))) (not (= .cse3 (fp.mul c_~CRM .cse0 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__S~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__S~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__S~0))))) (not (= ((_ to_fp 11 53) c_~CRM 10000.0) .cse4)) (not (= (fp.neg .cse4) .cse5)) (fp.geq .cse6 .cse5) (not (= (fp.sub c_~CRM .cse7 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E1~0))) .cse6)) (not (= .cse2 ((_ to_fp 11 53) c_~CRM 1.0))) (not (= .cse7 (fp.add c_~CRM .cse3 .cse1)))))) is different from true [2020-10-24 14:20:01,499 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet10_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet33_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet32_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet31_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet16_12| (_ BitVec 64)) (v_ULTIMATE.start_main_~main__S~0_22 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet11_9| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet12_9| (_ BitVec 64)) (ULTIMATE.start_main_~main__E0~0 (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet15_8| (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet11_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet11_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet11_9|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet31_5|))) (.cse6 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet15_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet15_8|))) (.cse7 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet16_12|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet16_12|))) (.cse8 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 62 52) v_ULTIMATE.start_main_~main__S~0_22) ((_ extract 51 0) v_ULTIMATE.start_main_~main__S~0_22))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet10_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet10_6|))) (.cse4 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet12_9|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet12_9|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet12_9|))) (.cse10 ((_ to_fp 11 53) c_~CRM 1.0)) (.cse9 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet33_5|))) (.cse5 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet32_5|))) (.cse3 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) ULTIMATE.start_main_~main__E0~0)))) (or (not (= .cse0 ((_ to_fp 11 53) c_~CRM (/ 999.0 1000.0)))) (not (= (fp.neg .cse1) .cse2)) (not (fp.geq .cse3 .cse2)) (not (fp.leq .cse3 .cse4)) (not (= .cse5 (fp.mul c_~CRM .cse0 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__S~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__S~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__S~0))))) (not (= ((_ to_fp 11 53) c_~CRM 10000.0) .cse6)) (not (= (fp.neg .cse6) .cse7)) (fp.geq .cse8 .cse7) (not (= (fp.sub c_~CRM .cse9 (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__E1~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__E1~0))) .cse8)) (not (= .cse10 .cse1)) (not (= .cse4 .cse10)) (not (= .cse9 (fp.add c_~CRM .cse5 .cse3)))))) is different from true [2020-10-24 14:20:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 14:20:01,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174614023] [2020-10-24 14:20:01,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 14:20:01,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2020-10-24 14:20:01,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144228941] [2020-10-24 14:20:01,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 14:20:01,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 14:20:01,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 14:20:01,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=75, Unknown=5, NotChecked=84, Total=210 [2020-10-24 14:20:01,977 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 15 states. [2020-10-24 14:20:04,542 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-10-24 14:20:08,145 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 103 DAG size of output: 47 [2020-10-24 14:20:11,993 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|ULTIMATE.start_main_#t~nondet15| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |ULTIMATE.start_main_#t~nondet15|) ((_ extract 62 52) |ULTIMATE.start_main_#t~nondet15|) ((_ extract 51 0) |ULTIMATE.start_main_#t~nondet15|)))) (and (= ((_ to_fp 11 53) roundNearestTiesToEven 10000.0) .cse0) (= (fp ((_ extract 63 63) |c_ULTIMATE.start_main_#t~nondet16|) ((_ extract 62 52) |c_ULTIMATE.start_main_#t~nondet16|) ((_ extract 51 0) |c_ULTIMATE.start_main_#t~nondet16|)) (fp.neg .cse0))))) (exists ((|v_ULTIMATE.start_main_#t~nondet33_5| (_ BitVec 64)) (|ULTIMATE.start_main_#t~nondet10| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet11_7| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet12_7| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet32_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet31_5| (_ BitVec 64)) (ULTIMATE.start_main_~main__E0~0 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__S~0_21 (_ BitVec 64)) (ULTIMATE.start_main_~main__E1~0 (_ BitVec 64))) (let ((.cse4 (fp ((_ extract 63 63) |ULTIMATE.start_main_#t~nondet10|) ((_ extract 62 52) |ULTIMATE.start_main_#t~nondet10|) ((_ extract 51 0) |ULTIMATE.start_main_#t~nondet10|))) (.cse6 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet11_7|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet11_7|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet11_7|))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse5 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) ULTIMATE.start_main_~main__E0~0))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (.cse8 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet12_7|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet12_7|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet12_7|))) (.cse9 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet33_5|))) (.cse2 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__E1~0) ((_ extract 62 52) ULTIMATE.start_main_~main__E1~0) ((_ extract 51 0) ULTIMATE.start_main_~main__E1~0))) (.cse10 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet32_5|))) (.cse11 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet31_5|))) (.cse7 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__S~0_21) ((_ extract 62 52) v_ULTIMATE.start_main_~main__S~0_21) ((_ extract 51 0) v_ULTIMATE.start_main_~main__S~0_21)))) (and (= .cse1 .cse2) (= .cse3 .cse4) (fp.geq .cse5 .cse6) (= (fp.neg .cse4) .cse6) (= .cse7 .cse1) (fp.leq .cse5 .cse8) (= .cse9 (fp.add roundNearestTiesToEven .cse10 .cse5)) (= .cse3 .cse8) (= (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__S~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__S~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__S~0)) (fp.sub roundNearestTiesToEven .cse9 .cse2)) (= .cse11 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0))) (= .cse10 (fp.mul roundNearestTiesToEven .cse11 .cse7))))) (exists ((|v_ULTIMATE.start_main_#t~nondet33_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet11_7| (_ BitVec 64)) (|ULTIMATE.start_main_#t~nondet10| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet12_7| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet32_5| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet31_5| (_ BitVec 64)) (ULTIMATE.start_main_~main__E0~0 (_ BitVec 64)) (v_ULTIMATE.start_main_~main__S~0_21 (_ BitVec 64)) (ULTIMATE.start_main_~main__E1~0 (_ BitVec 64))) (let ((.cse14 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet11_7|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet11_7|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet11_7|))) (.cse17 (fp ((_ extract 63 63) |ULTIMATE.start_main_#t~nondet10|) ((_ extract 62 52) |ULTIMATE.start_main_#t~nondet10|) ((_ extract 51 0) |ULTIMATE.start_main_#t~nondet10|))) (.cse16 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__E1~0) ((_ extract 62 52) ULTIMATE.start_main_~main__E1~0) ((_ extract 51 0) ULTIMATE.start_main_~main__E1~0))) (.cse18 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet12_7|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet12_7|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet12_7|))) (.cse19 ((_ to_fp 11 53) c_~CRM 1.0)) (.cse20 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet33_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet33_5|))) (.cse13 (fp ((_ extract 63 63) ULTIMATE.start_main_~main__E0~0) ((_ extract 62 52) ULTIMATE.start_main_~main__E0~0) ((_ extract 51 0) ULTIMATE.start_main_~main__E0~0))) (.cse15 ((_ to_fp 11 53) c_~CRM (_ bv0 32))) (.cse21 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet32_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet32_5|))) (.cse12 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet31_5|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet31_5|))) (.cse22 (fp ((_ extract 63 63) v_ULTIMATE.start_main_~main__S~0_21) ((_ extract 62 52) v_ULTIMATE.start_main_~main__S~0_21) ((_ extract 51 0) v_ULTIMATE.start_main_~main__S~0_21)))) (and (= .cse12 ((_ to_fp 11 53) c_~CRM (/ 999.0 1000.0))) (fp.geq .cse13 .cse14) (= .cse15 .cse16) (= (fp.neg .cse17) .cse14) (fp.leq .cse13 .cse18) (= .cse19 .cse17) (= (fp.sub c_~CRM .cse20 .cse16) (fp ((_ extract 63 63) c_ULTIMATE.start_main_~main__S~0) ((_ extract 62 52) c_ULTIMATE.start_main_~main__S~0) ((_ extract 51 0) c_ULTIMATE.start_main_~main__S~0))) (= .cse18 .cse19) (= .cse20 (fp.add c_~CRM .cse21 .cse13)) (= .cse22 .cse15) (= .cse21 (fp.mul c_~CRM .cse12 .cse22)))))) is different from false [2020-10-24 14:20:40,310 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 14:20:40,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 14:20:40,513 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) 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:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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: java.io.IOException: Stream Closed at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2020-10-24 14:20:40,529 INFO L168 Benchmark]: Toolchain (without parser) took 92936.07 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 23.2 MB in the beginning and 36.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:20:40,531 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 46.1 MB. Free memory was 32.2 MB in the beginning and 32.2 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:20:40,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.35 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.5 MB in the beginning and 44.0 MB in the end (delta: -21.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-10-24 14:20:40,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.10 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:20:40,536 INFO L168 Benchmark]: Boogie Preprocessor took 55.51 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 40.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 14:20:40,537 INFO L168 Benchmark]: RCFGBuilder took 4901.32 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 32.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-10-24 14:20:40,538 INFO L168 Benchmark]: TraceAbstraction took 87567.37 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 36.6 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 14:20:40,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 46.1 MB. Free memory was 32.2 MB in the beginning and 32.2 MB in the end (delta: 35.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.35 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 22.5 MB in the beginning and 44.0 MB in the end (delta: -21.5 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.10 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.51 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 40.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4901.32 ms. Allocated memory is still 60.8 MB. Free memory was 40.3 MB in the beginning and 32.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 87567.37 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 36.6 MB in the end (delta: -4.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...