./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/interpolation.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/interpolation.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:38:00,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:38:00,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:38:00,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:38:00,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:38:00,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:38:00,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:38:00,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:38:00,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:38:00,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:38:00,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:38:00,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:38:00,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:38:00,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:38:00,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:38:00,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:38:00,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:38:00,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:38:00,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:38:00,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:38:00,557 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:38:00,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:38:00,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:38:00,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:38:00,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:38:00,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:38:00,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:38:00,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:38:00,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:38:00,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:38:00,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:38:00,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:38:00,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:38:00,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:38:00,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:38:00,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:38:00,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:38:00,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:38:00,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:38:00,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:38:00,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:38:00,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:38:00,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:38:00,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:38:00,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:38:00,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:38:00,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:38:00,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:38:00,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:38:00,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:38:00,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:38:00,605 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:38:00,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:38:00,606 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:38:00,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:38:00,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:38:00,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:38:00,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:38:00,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:38:00,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:38:00,607 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:38:00,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:38:00,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:38:00,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:38:00,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:38:00,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:38:00,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:38:00,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:38:00,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:38:00,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:38:00,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:38:00,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:38:00,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:38:00,609 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:38:00,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:38:00,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:38:00,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd [2022-07-19 13:38:00,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:38:00,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:38:00,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:38:00,846 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:38:00,847 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:38:00,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation.c [2022-07-19 13:38:00,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28650ec5/acc4706cf9014a1f811dd7f7003f54a3/FLAG3eae70396 [2022-07-19 13:38:01,273 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:38:01,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c [2022-07-19 13:38:01,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28650ec5/acc4706cf9014a1f811dd7f7003f54a3/FLAG3eae70396 [2022-07-19 13:38:01,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f28650ec5/acc4706cf9014a1f811dd7f7003f54a3 [2022-07-19 13:38:01,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:38:01,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:38:01,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:38:01,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:38:01,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:38:01,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f828f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01, skipping insertion in model container [2022-07-19 13:38:01,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:38:01,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:38:01,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-07-19 13:38:01,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:38:01,457 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:38:01,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-07-19 13:38:01,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:38:01,484 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:38:01,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01 WrapperNode [2022-07-19 13:38:01,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:38:01,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:38:01,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:38:01,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:38:01,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,513 INFO L137 Inliner]: procedures = 18, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-07-19 13:38:01,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:38:01,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:38:01,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:38:01,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:38:01,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:38:01,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:38:01,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:38:01,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:38:01,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (1/1) ... [2022-07-19 13:38:01,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:38:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:38:01,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:38:01,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:38:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:38:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:38:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 13:38:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-19 13:38:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:38:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:38:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-07-19 13:38:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 13:38:01,654 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:38:01,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:38:01,746 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:38:01,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:38:01,751 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:38:01,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:38:01 BoogieIcfgContainer [2022-07-19 13:38:01,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:38:01,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:38:01,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:38:01,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:38:01,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:38:01" (1/3) ... [2022-07-19 13:38:01,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3649667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:38:01, skipping insertion in model container [2022-07-19 13:38:01,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:01" (2/3) ... [2022-07-19 13:38:01,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3649667a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:38:01, skipping insertion in model container [2022-07-19 13:38:01,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:38:01" (3/3) ... [2022-07-19 13:38:01,759 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c [2022-07-19 13:38:01,771 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:38:01,772 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:38:01,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:38:01,814 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63a7bd42, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d14eff8 [2022-07-19 13:38:01,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:38:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:38:01,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:38:01,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:38:01,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:38:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:38:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2022-07-19 13:38:01,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:38:01,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651870174] [2022-07-19 13:38:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:38:01,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:38:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:38:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:38:02,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:38:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651870174] [2022-07-19 13:38:02,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651870174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:38:02,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:38:02,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:38:02,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250983656] [2022-07-19 13:38:02,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:38:02,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:38:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:38:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:38:02,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:38:02,084 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:38:02,094 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-07-19 13:38:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:38:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-19 13:38:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:38:02,101 INFO L225 Difference]: With dead ends: 29 [2022-07-19 13:38:02,101 INFO L226 Difference]: Without dead ends: 13 [2022-07-19 13:38:02,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:38:02,109 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:38:02,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:38:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-19 13:38:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-19 13:38:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-19 13:38:02,138 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-07-19 13:38:02,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:38:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-19 13:38:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-19 13:38:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:38:02,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:38:02,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:38:02,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:38:02,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:38:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:38:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2022-07-19 13:38:02,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:38:02,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972141331] [2022-07-19 13:38:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:38:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:38:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:38:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:38:02,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:38:02,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972141331] [2022-07-19 13:38:02,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972141331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:38:02,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:38:02,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:38:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147145959] [2022-07-19 13:38:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:38:02,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:38:02,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:38:02,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:38:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:38:02,208 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:38:02,221 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-07-19 13:38:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:38:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-19 13:38:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:38:02,222 INFO L225 Difference]: With dead ends: 24 [2022-07-19 13:38:02,222 INFO L226 Difference]: Without dead ends: 20 [2022-07-19 13:38:02,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:38:02,224 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:38:02,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:38:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-19 13:38:02,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-07-19 13:38:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-19 13:38:02,229 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-07-19 13:38:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:38:02,229 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-19 13:38:02,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-19 13:38:02,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 13:38:02,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:38:02,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:38:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:38:02,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:38:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:38:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2022-07-19 13:38:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:38:02,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822613557] [2022-07-19 13:38:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:38:02,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:38:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:38:02,257 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:38:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:38:02,290 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:38:02,293 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:38:02,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:38:02,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 13:38:02,300 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-19 13:38:02,303 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:38:02,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:38:02 BoogieIcfgContainer [2022-07-19 13:38:02,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:38:02,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:38:02,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:38:02,337 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:38:02,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:38:01" (3/4) ... [2022-07-19 13:38:02,339 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:38:02,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:38:02,341 INFO L158 Benchmark]: Toolchain (without parser) took 1047.71ms. Allocated memory is still 121.6MB. Free memory was 85.7MB in the beginning and 51.1MB in the end (delta: 34.5MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2022-07-19 13:38:02,341 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 94.6MB in the beginning and 94.6MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:38:02,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.64ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 95.9MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:38:02,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.01ms. Allocated memory is still 121.6MB. Free memory was 95.9MB in the beginning and 93.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:38:02,348 INFO L158 Benchmark]: Boogie Preprocessor took 17.40ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 93.1MB in the end (delta: 721.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:38:02,348 INFO L158 Benchmark]: RCFGBuilder took 220.82ms. Allocated memory is still 121.6MB. Free memory was 93.1MB in the beginning and 82.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:38:02,349 INFO L158 Benchmark]: TraceAbstraction took 581.45ms. Allocated memory is still 121.6MB. Free memory was 81.9MB in the beginning and 51.1MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-19 13:38:02,349 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 121.6MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:38:02,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory was 94.6MB in the beginning and 94.6MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.64ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 95.9MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.01ms. Allocated memory is still 121.6MB. Free memory was 95.9MB in the beginning and 93.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.40ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 93.1MB in the end (delta: 721.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 220.82ms. Allocated memory is still 121.6MB. Free memory was 93.1MB in the beginning and 82.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 581.45ms. Allocated memory is still 121.6MB. Free memory was 81.9MB in the beginning and 51.1MB in the end (delta: 30.8MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 121.6MB. Free memory is still 51.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 26, overapproximation of to_real at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L13] int i; [L14] float z, t; [L15] float min[] = { 5, 10, 12, 30, 150 }; [L16] float max[] = { 10, 12, 30, 150, 300 }; [L18] t = __VERIFIER_nondet_float() [L19] EXPR min[0] [L19] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] [L19] EXPR max[sizeof(max) / sizeof(max[0]) - 1] [L19] EXPR t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1] VAL [max={4:0}, max[sizeof(max) / sizeof(max[0]) - 1]=51, min={5:0}, min[0]=50] [L19] CALL assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(t >= min[0] && t <= max[sizeof(max) / sizeof(max[0]) - 1]) [L21] i = 0 VAL [i=0, max={4:0}, min={5:0}] [L21] COND TRUE i < sizeof(min) / sizeof(min[0]) [L22] EXPR max[i] VAL [i=0, max={4:0}, max[i]=49, min={5:0}] [L22] COND TRUE t <= max[i] [L24] EXPR min[i] [L24] EXPR max[i] [L24] EXPR min[i] [L24] z = (t - min[i]) / (max[i] - min[i]) [L26] CALL __VERIFIER_assert(z >= 0.f && z <= 1.f) [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L9] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:38:02,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/interpolation.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:38:04,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:38:04,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:38:04,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:38:04,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:38:04,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:38:04,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:38:04,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:38:04,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:38:04,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:38:04,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:38:04,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:38:04,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:38:04,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:38:04,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:38:04,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:38:04,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:38:04,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:38:04,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:38:04,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:38:04,341 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:38:04,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:38:04,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:38:04,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:38:04,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:38:04,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:38:04,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:38:04,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:38:04,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:38:04,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:38:04,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:38:04,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:38:04,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:38:04,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:38:04,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:38:04,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:38:04,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:38:04,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:38:04,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:38:04,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:38:04,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:38:04,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:38:04,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:38:04,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:38:04,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:38:04,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:38:04,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:38:04,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:38:04,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:38:04,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:38:04,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:38:04,397 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:38:04,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:38:04,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:38:04,398 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:38:04,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:38:04,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:38:04,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:38:04,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:38:04,401 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f6a485d859f7eee00a1696279d966456b3a38851c6233a0367f621da73d6bd [2022-07-19 13:38:04,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:38:04,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:38:04,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:38:04,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:38:04,672 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:38:04,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation.c [2022-07-19 13:38:04,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bded697b4/5a4a85c971e64887aa9ca4d2bd7076a4/FLAG558ee9967 [2022-07-19 13:38:05,154 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:38:05,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c [2022-07-19 13:38:05,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bded697b4/5a4a85c971e64887aa9ca4d2bd7076a4/FLAG558ee9967 [2022-07-19 13:38:05,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bded697b4/5a4a85c971e64887aa9ca4d2bd7076a4 [2022-07-19 13:38:05,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:38:05,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:38:05,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:38:05,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:38:05,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:38:05,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d6fcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05, skipping insertion in model container [2022-07-19 13:38:05,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:38:05,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:38:05,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-07-19 13:38:05,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:38:05,346 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:38:05,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation.c[449,462] [2022-07-19 13:38:05,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:38:05,408 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:38:05,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05 WrapperNode [2022-07-19 13:38:05,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:38:05,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:38:05,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:38:05,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:38:05,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,439 INFO L137 Inliner]: procedures = 19, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-07-19 13:38:05,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:38:05,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:38:05,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:38:05,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:38:05,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:38:05,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:38:05,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:38:05,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:38:05,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (1/1) ... [2022-07-19 13:38:05,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:38:05,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:38:05,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:38:05,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:38:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:38:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-07-19 13:38:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:38:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 13:38:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-07-19 13:38:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:38:05,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:38:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 13:38:05,630 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:38:05,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:38:07,856 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:38:07,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:38:07,869 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 13:38:07,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:38:07 BoogieIcfgContainer [2022-07-19 13:38:07,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:38:07,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:38:07,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:38:07,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:38:07,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:38:05" (1/3) ... [2022-07-19 13:38:07,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1f3dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:38:07, skipping insertion in model container [2022-07-19 13:38:07,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:38:05" (2/3) ... [2022-07-19 13:38:07,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1f3dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:38:07, skipping insertion in model container [2022-07-19 13:38:07,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:38:07" (3/3) ... [2022-07-19 13:38:07,906 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c [2022-07-19 13:38:07,919 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:38:07,919 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:38:07,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:38:07,964 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a1f6fcf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e55090a [2022-07-19 13:38:07,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:38:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:38:07,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:38:07,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:38:07,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:38:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:38:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1235833265, now seen corresponding path program 1 times [2022-07-19 13:38:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:38:07,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750137894] [2022-07-19 13:38:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:38:07,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:38:07,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:38:07,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:38:08,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:38:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:38:08,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:38:08,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:38:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:38:08,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:38:08,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:38:08,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750137894] [2022-07-19 13:38:08,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750137894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:38:08,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:38:08,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:38:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222661411] [2022-07-19 13:38:08,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:38:08,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:38:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:38:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:38:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:38:08,320 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:38:08,331 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-07-19 13:38:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:38:08,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-19 13:38:08,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:38:08,339 INFO L225 Difference]: With dead ends: 29 [2022-07-19 13:38:08,339 INFO L226 Difference]: Without dead ends: 13 [2022-07-19 13:38:08,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:38:08,344 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:38:08,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:38:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-19 13:38:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-19 13:38:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-19 13:38:08,368 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-07-19 13:38:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:38:08,368 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-19 13:38:08,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-19 13:38:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 13:38:08,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:38:08,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:38:08,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:38:08,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:38:08,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:38:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:38:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1178902664, now seen corresponding path program 1 times [2022-07-19 13:38:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:38:08,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17054824] [2022-07-19 13:38:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:38:08,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:38:08,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:38:08,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:38:08,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 13:38:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:38:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 13:38:08,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:38:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:38:08,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:38:08,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:38:08,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17054824] [2022-07-19 13:38:08,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17054824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:38:08,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:38:08,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 13:38:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101634645] [2022-07-19 13:38:08,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:38:08,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 13:38:08,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:38:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 13:38:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:38:08,887 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:11,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:38:13,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:38:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:38:13,154 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-07-19 13:38:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 13:38:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-19 13:38:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:38:13,195 INFO L225 Difference]: With dead ends: 24 [2022-07-19 13:38:13,195 INFO L226 Difference]: Without dead ends: 20 [2022-07-19 13:38:13,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 13:38:13,196 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 13:38:13,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 13:38:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-19 13:38:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2022-07-19 13:38:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-19 13:38:13,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2022-07-19 13:38:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:38:13,204 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-19 13:38:13,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:38:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-19 13:38:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 13:38:13,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:38:13,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:38:13,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-19 13:38:13,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:38:13,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:38:13,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:38:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2110328889, now seen corresponding path program 1 times [2022-07-19 13:38:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:38:13,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280578275] [2022-07-19 13:38:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:38:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:38:13,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:38:13,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:38:13,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 13:38:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:38:13,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 13:38:13,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:38:15,885 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 13:38:15,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 392 treesize of output 192 [2022-07-19 13:41:19,244 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (let ((.cse2 (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse2)) (and .cse2 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0)))) is different from true [2022-07-19 13:41:40,797 WARN L833 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0)))) is different from false [2022-07-19 13:41:42,825 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|ULTIMATE.start_main_~t~0#1| (_ FloatingPoint 8 24)) (v_arrayElimCell_3 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1))) (.cse0 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3)))) (and (fp.leq |ULTIMATE.start_main_~t~0#1| .cse0) (fp.geq |ULTIMATE.start_main_~t~0#1| .cse1) (= .cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32))) (not (fp.leq (fp.div roundNearestTiesToEven (fp.sub roundNearestTiesToEven |ULTIMATE.start_main_~t~0#1| .cse1) (fp.sub roundNearestTiesToEven .cse0 .cse1)) ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse0)))) is different from true [2022-07-19 13:41:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:41:42,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:41:42,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:41:42,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280578275] [2022-07-19 13:41:42,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280578275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:41:42,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:41:42,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 13:41:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954165615] [2022-07-19 13:41:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:41:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 13:41:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:41:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 13:41:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=62, Unknown=3, NotChecked=34, Total=132 [2022-07-19 13:41:42,829 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:41:46,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:42:13,935 WARN L233 SmtUtils]: Spent 22.31s on a formula simplification. DAG size of input: 93 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 13:42:16,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:42:17,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:42:19,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:42:21,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:42:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:42:21,411 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-07-19 13:42:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 13:42:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-19 13:42:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:42:21,412 INFO L225 Difference]: With dead ends: 29 [2022-07-19 13:42:21,413 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 13:42:21,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=87, Invalid=189, Unknown=4, NotChecked=62, Total=342 [2022-07-19 13:42:21,414 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-19 13:42:21,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 20 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 74 Invalid, 2 Unknown, 36 Unchecked, 9.9s Time] [2022-07-19 13:42:21,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 13:42:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2022-07-19 13:42:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-19 13:42:21,419 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2022-07-19 13:42:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:42:21,419 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-19 13:42:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-19 13:42:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 13:42:21,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:42:21,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:42:21,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 13:42:21,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:42:21,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:42:21,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:42:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1504580037, now seen corresponding path program 1 times [2022-07-19 13:42:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:42:21,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087151716] [2022-07-19 13:42:21,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:42:21,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:42:21,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:42:21,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:42:21,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 13:42:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:42:21,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 13:42:21,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:42:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:42:21,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:42:21,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:42:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087151716] [2022-07-19 13:42:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087151716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:42:21,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:42:21,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 13:42:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793937235] [2022-07-19 13:42:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:42:21,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 13:42:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:42:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 13:42:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 13:42:21,856 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:42:21,893 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-19 13:42:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 13:42:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-19 13:42:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:42:21,895 INFO L225 Difference]: With dead ends: 26 [2022-07-19 13:42:21,895 INFO L226 Difference]: Without dead ends: 15 [2022-07-19 13:42:21,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 13:42:21,896 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:42:21,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:42:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-19 13:42:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-19 13:42:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-07-19 13:42:21,899 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-07-19 13:42:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:42:21,900 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-07-19 13:42:21,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-07-19 13:42:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 13:42:21,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:42:21,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:42:21,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-19 13:42:22,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:42:22,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:42:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:42:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 854582592, now seen corresponding path program 1 times [2022-07-19 13:42:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:42:22,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661018093] [2022-07-19 13:42:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:42:22,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:42:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:42:22,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:42:22,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 13:42:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:42:22,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 13:42:22,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:42:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:42:22,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 13:42:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 13:42:22,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:42:22,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661018093] [2022-07-19 13:42:22,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661018093] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 13:42:22,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 13:42:22,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-19 13:42:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681002373] [2022-07-19 13:42:22,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 13:42:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 13:42:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:42:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 13:42:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 13:42:22,408 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:24,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 13:42:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:42:24,649 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-07-19 13:42:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 13:42:24,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-19 13:42:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:42:24,651 INFO L225 Difference]: With dead ends: 30 [2022-07-19 13:42:24,651 INFO L226 Difference]: Without dead ends: 26 [2022-07-19 13:42:24,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-19 13:42:24,654 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 13:42:24,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 13:42:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-19 13:42:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-07-19 13:42:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-19 13:42:24,659 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2022-07-19 13:42:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:42:24,659 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-19 13:42:24,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 13:42:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-19 13:42:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 13:42:24,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:42:24,662 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:42:24,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-19 13:42:24,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:42:24,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:42:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:42:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 723862385, now seen corresponding path program 1 times [2022-07-19 13:42:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:42:24,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547450597] [2022-07-19 13:42:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:42:24,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:42:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:42:24,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:42:24,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 13:42:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:42:25,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 13:42:25,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:42:28,147 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-19 13:42:28,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 439 treesize of output 215