./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/nla-digbench-scaling/freire1_valuebound50.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 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:26:29,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:26:29,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:26:29,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:26:29,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:26:29,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:26:29,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:26:29,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:26:29,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:26:29,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:26:29,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:26:29,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:26:29,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:26:29,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:26:29,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:26:29,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:26:29,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:26:29,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:26:29,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:26:29,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:26:29,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:26:29,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:26:29,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:26:29,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:26:29,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:26:29,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:26:29,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:26:29,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:26:29,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:26:29,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:26:29,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:26:29,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:26:29,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:26:29,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:26:29,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:26:29,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:26:29,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:26:29,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:26:29,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:26:29,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:26:29,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:26:29,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 17:26:29,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:26:29,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:26:29,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:26:29,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:26:29,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:26:29,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:26:29,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:26:29,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:26:29,470 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:26:29,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:26:29,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:26:29,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:26:29,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:26:29,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:26:29,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:26:29,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:26:29,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:26:29,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:29,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:26:29,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:26:29,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:26:29,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 17:26:29,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 17:26:29,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:26:29,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:26:29,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:26:29,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 [2022-02-20 17:26:29,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:26:29,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:26:29,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:26:29,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:26:29,678 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:26:29,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2022-02-20 17:26:29,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0318b629/5c7a9d8f4f034e64b87ab36de8e2577a/FLAG3eeff4d52 [2022-02-20 17:26:30,062 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:26:30,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2022-02-20 17:26:30,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0318b629/5c7a9d8f4f034e64b87ab36de8e2577a/FLAG3eeff4d52 [2022-02-20 17:26:30,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0318b629/5c7a9d8f4f034e64b87ab36de8e2577a [2022-02-20 17:26:30,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:26:30,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:26:30,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:30,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:26:30,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:26:30,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e398f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30, skipping insertion in model container [2022-02-20 17:26:30,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:26:30,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:26:30,637 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/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2022-02-20 17:26:30,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:30,652 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:26:30,660 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/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2022-02-20 17:26:30,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:30,672 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:26:30,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30 WrapperNode [2022-02-20 17:26:30,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:30,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:30,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:26:30,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:26:30,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,696 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-02-20 17:26:30,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:30,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:26:30,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:26:30,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:26:30,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:26:30,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:26:30,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:26:30,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:26:30,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (1/1) ... [2022-02-20 17:26:30,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:30,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:26:30,749 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) [2022-02-20 17:26:30,764 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 [2022-02-20 17:26:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:26:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 17:26:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:26:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:26:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:26:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:26:30,825 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:26:30,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:26:30,896 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:26:30,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:26:30,901 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:26:30,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:30 BoogieIcfgContainer [2022-02-20 17:26:30,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:26:30,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:26:30,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:26:30,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:26:30,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:26:30" (1/3) ... [2022-02-20 17:26:30,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e39ef5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:30, skipping insertion in model container [2022-02-20 17:26:30,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:30" (2/3) ... [2022-02-20 17:26:30,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e39ef5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:30, skipping insertion in model container [2022-02-20 17:26:30,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:30" (3/3) ... [2022-02-20 17:26:30,908 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound50.c [2022-02-20 17:26:30,911 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:26:30,912 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:26:30,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:26:30,956 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 17:26:30,956 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:26:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 17:26:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:31,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:31,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:31,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:31,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2022-02-20 17:26:31,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:26:31,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651240592] [2022-02-20 17:26:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:31,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:26:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:31,171 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-02-20 17:26:31,172 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~someBinaryDOUBLEComparisonOperation(main_~a~0#1, ~convertINTToDOUBLE(0)) && ~someBinaryDOUBLEComparisonOperation(main_~a~0#1, ~convertINTToDOUBLE(50)) then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {21#true} is VALID [2022-02-20 17:26:31,173 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {22#false} is VALID [2022-02-20 17:26:31,173 INFO L290 TraceCheckUtils]: 3: Hoare triple {22#false} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := ~someBinaryArithmeticDOUBLEoperation(main_~a~0#1, 2.0);main_~r~0#1 := 0; {22#false} is VALID [2022-02-20 17:26:31,174 INFO L290 TraceCheckUtils]: 4: Hoare triple {22#false} assume false; {22#false} is VALID [2022-02-20 17:26:31,174 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call __VERIFIER_assert((if 0 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(main_~r~0#1 * main_~r~0#1), main_~a~0#1), ~convertINTToDOUBLE(main_~r~0#1)), ~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(2), main_~x~0#1))) then 1 else 0)); {22#false} is VALID [2022-02-20 17:26:31,174 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2022-02-20 17:26:31,174 INFO L290 TraceCheckUtils]: 7: Hoare triple {22#false} assume 0 == ~cond; {22#false} is VALID [2022-02-20 17:26:31,175 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 17:26:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:26:31,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 17:26:31,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651240592] [2022-02-20 17:26:31,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651240592] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:26:31,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:26:31,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:26:31,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784747454] [2022-02-20 17:26:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:26:31,185 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:31,186 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:26:31,190 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:31,213 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:31,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:26:31,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 17:26:31,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:26:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:31,239 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:31,290 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-02-20 17:26:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:26:31,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:26:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:31,313 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2022-02-20 17:26:31,360 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:31,367 INFO L225 Difference]: With dead ends: 33 [2022-02-20 17:26:31,367 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 17:26:31,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:31,372 INFO L933 BasicCegarLoop]: 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 [2022-02-20 17:26:31,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:26:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 17:26:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 17:26:31,393 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:26:31,394 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:31,394 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:31,395 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:31,402 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:31,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:31,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:31,403 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:31,403 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:31,403 INFO L87 Difference]: Start difference. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:31,407 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:31,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:31,408 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:31,408 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:26:31,408 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:26:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-02-20 17:26:31,417 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-02-20 17:26:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:26:31,418 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-02-20 17:26:31,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:31,419 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:31,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:31,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 17:26:31,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2022-02-20 17:26:31,421 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 17:26:31,421 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397416334] [2022-02-20 17:26:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 17:26:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:26:31,437 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 17:26:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 17:26:31,458 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 17:26:31,460 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 17:26:31,461 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 17:26:31,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 17:26:31,470 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 17:26:31,472 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 17:26:31,480 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call __VERIFIER_assert((if 0 == ~convertDOUBLEToINT(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(~r~0 * ~r~0), ~a~0), ~convertINTToDOUBLE(~r~0)), ~someBinaryArithmeticDOUBLEoperation(~convertINTToDOUBLE(2), ~x~0))) then 1 else 0)); [2022-02-20 17:26:31,480 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 17:26:31,485 INFO L158 Benchmark]: Toolchain (without parser) took 984.63ms. Allocated memory is still 115.3MB. Free memory was 80.5MB in the beginning and 48.0MB in the end (delta: 32.6MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2022-02-20 17:26:31,485 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 85.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 17:26:31,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.72ms. Allocated memory is still 115.3MB. Free memory was 80.3MB in the beginning and 90.7MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 17:26:31,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.62ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 88.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 17:26:31,486 INFO L158 Benchmark]: Boogie Preprocessor took 14.39ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 87.8MB in the end (delta: 685.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 17:26:31,486 INFO L158 Benchmark]: RCFGBuilder took 183.61ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 78.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 17:26:31,487 INFO L158 Benchmark]: TraceAbstraction took 580.02ms. Allocated memory is still 115.3MB. Free memory was 78.1MB in the beginning and 48.0MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-02-20 17:26:31,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 85.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.72ms. Allocated memory is still 115.3MB. Free memory was 80.3MB in the beginning and 90.7MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.62ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 88.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.39ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 87.8MB in the end (delta: 685.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 183.61ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 78.1MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 580.02ms. Allocated memory is still 115.3MB. Free memory was 78.1MB in the beginning and 48.0MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. 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 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 17:26:31,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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 -ea -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/nla-digbench-scaling/freire1_valuebound50.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 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 17:26:33,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 17:26:33,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 17:26:33,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 17:26:33,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 17:26:33,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 17:26:33,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 17:26:33,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 17:26:33,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 17:26:33,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 17:26:33,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 17:26:33,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 17:26:33,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 17:26:33,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 17:26:33,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 17:26:33,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 17:26:33,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 17:26:33,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 17:26:33,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 17:26:33,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 17:26:33,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 17:26:33,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 17:26:33,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 17:26:33,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 17:26:33,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 17:26:33,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 17:26:33,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 17:26:33,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 17:26:33,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 17:26:33,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 17:26:33,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 17:26:33,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 17:26:33,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 17:26:33,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 17:26:33,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 17:26:33,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 17:26:33,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 17:26:33,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 17:26:33,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 17:26:33,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 17:26:33,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 17:26:33,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 17:26:33,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 17:26:33,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 17:26:33,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 17:26:33,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 17:26:33,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 17:26:33,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 17:26:33,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 17:26:33,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 17:26:33,151 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 17:26:33,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 17:26:33,151 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 17:26:33,152 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 17:26:33,153 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 17:26:33,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 17:26:33,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 17:26:33,153 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 17:26:33,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 17:26:33,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 17:26:33,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 17:26:33,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 17:26:33,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:33,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 17:26:33,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 17:26:33,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 17:26:33,154 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 17:26:33,154 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 17:26:33,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 17:26:33,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 17:26:33,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 17:26:33,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 17:26:33,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fdde3d352865d24f00edfb02cdd5994421923a5ea92d15a0168523776b8ab34 [2022-02-20 17:26:33,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 17:26:33,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 17:26:33,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 17:26:33,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 17:26:33,419 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 17:26:33,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2022-02-20 17:26:33,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8316642b/52e1f7837c1c403db63cc2b7befe5ba2/FLAG80bce72fc [2022-02-20 17:26:33,815 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 17:26:33,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound50.c [2022-02-20 17:26:33,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8316642b/52e1f7837c1c403db63cc2b7befe5ba2/FLAG80bce72fc [2022-02-20 17:26:34,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8316642b/52e1f7837c1c403db63cc2b7befe5ba2 [2022-02-20 17:26:34,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 17:26:34,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 17:26:34,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:34,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 17:26:34,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 17:26:34,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785b1e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34, skipping insertion in model container [2022-02-20 17:26:34,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 17:26:34,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 17:26:34,360 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/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2022-02-20 17:26:34,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:34,378 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 17:26:34,412 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/nla-digbench-scaling/freire1_valuebound50.c[712,725] [2022-02-20 17:26:34,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 17:26:34,425 INFO L208 MainTranslator]: Completed translation [2022-02-20 17:26:34,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34 WrapperNode [2022-02-20 17:26:34,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 17:26:34,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:34,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 17:26:34,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 17:26:34,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,448 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-02-20 17:26:34,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 17:26:34,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 17:26:34,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 17:26:34,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 17:26:34,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 17:26:34,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 17:26:34,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 17:26:34,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 17:26:34,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (1/1) ... [2022-02-20 17:26:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 17:26:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 17:26:34,490 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) [2022-02-20 17:26:34,495 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 [2022-02-20 17:26:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 17:26:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 17:26:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 17:26:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 17:26:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-20 17:26:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-20 17:26:34,559 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 17:26:34,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 17:26:35,308 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 17:26:35,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 17:26:35,312 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 17:26:35,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:35 BoogieIcfgContainer [2022-02-20 17:26:35,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 17:26:35,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 17:26:35,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 17:26:35,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 17:26:35,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 05:26:34" (1/3) ... [2022-02-20 17:26:35,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137ad191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:35, skipping insertion in model container [2022-02-20 17:26:35,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 05:26:34" (2/3) ... [2022-02-20 17:26:35,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137ad191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 05:26:35, skipping insertion in model container [2022-02-20 17:26:35,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 05:26:35" (3/3) ... [2022-02-20 17:26:35,319 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound50.c [2022-02-20 17:26:35,322 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 17:26:35,322 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 17:26:35,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 17:26:35,361 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 17:26:35,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 17:26:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-20 17:26:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:35,390 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:35,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:35,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2022-02-20 17:26:35,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:26:35,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926010178] [2022-02-20 17:26:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:35,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:26:35,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:26:35,406 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) [2022-02-20 17:26:35,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 17:26:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:35,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 17:26:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:35,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 17:26:35,741 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(10bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {21#true} is VALID [2022-02-20 17:26:35,742 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~r~0#1, main_~a~0#1, main_~x~0#1;havoc main_~r~0#1;havoc main_~a~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.geq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32)) && ~fp.leq~DOUBLE(main_~a~0#1, ~convertINTToDOUBLE(currentRoundingMode, 50bv32)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {21#true} is VALID [2022-02-20 17:26:35,743 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {22#false} is VALID [2022-02-20 17:26:35,743 INFO L290 TraceCheckUtils]: 3: Hoare triple {22#false} assume { :end_inline_assume_abort_if_not } true;main_~x~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~a~0#1, ~to_fp~DOUBLE(currentRoundingMode, 2.0));main_~r~0#1 := 0bv32; {22#false} is VALID [2022-02-20 17:26:35,743 INFO L290 TraceCheckUtils]: 4: Hoare triple {22#false} assume false; {22#false} is VALID [2022-02-20 17:26:35,743 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call __VERIFIER_assert((if 0bv32 == ~convertDOUBLEToINT(~roundTowardZero, ~fp.add~DOUBLE(currentRoundingMode, ~fp.sub~DOUBLE(currentRoundingMode, ~fp.sub~DOUBLE(currentRoundingMode, ~convertINTToDOUBLE(currentRoundingMode, ~bvmul32(main_~r~0#1, main_~r~0#1)), main_~a~0#1), ~convertINTToDOUBLE(currentRoundingMode, main_~r~0#1)), ~fp.mul~DOUBLE(currentRoundingMode, ~convertINTToDOUBLE(currentRoundingMode, 2bv32), main_~x~0#1))) then 1bv32 else 0bv32)); {22#false} is VALID [2022-02-20 17:26:35,744 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2022-02-20 17:26:35,744 INFO L290 TraceCheckUtils]: 7: Hoare triple {22#false} assume 0bv32 == ~cond; {22#false} is VALID [2022-02-20 17:26:35,744 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 17:26:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 17:26:35,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 17:26:35,746 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 17:26:35,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926010178] [2022-02-20 17:26:35,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926010178] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 17:26:35,747 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 17:26:35,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 17:26:35,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625184614] [2022-02-20 17:26:35,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 17:26:35,751 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:35,752 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 17:26:35,754 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:36,015 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:36,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 17:26:36,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 17:26:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 17:26:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:36,034 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:45,420 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2022-02-20 17:26:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 17:26:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-20 17:26:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 17:26:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2022-02-20 17:26:45,428 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2022-02-20 17:26:47,617 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 17:26:47,622 INFO L225 Difference]: With dead ends: 33 [2022-02-20 17:26:47,622 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 17:26:47,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 17:26:47,626 INFO L933 BasicCegarLoop]: 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 [2022-02-20 17:26:47,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 17:26:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 17:26:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 17:26:47,644 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 17:26:47,645 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:47,645 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:47,646 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:47,648 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:47,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:47,649 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:47,649 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:47,649 INFO L87 Difference]: Start difference. First operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 17:26:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 17:26:47,651 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-02-20 17:26:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:47,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 17:26:47,651 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 17:26:47,651 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 17:26:47,652 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 17:26:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 17:26:47,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-02-20 17:26:47,654 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-02-20 17:26:47,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 17:26:47,654 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-02-20 17:26:47,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 17:26:47,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-02-20 17:26:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-20 17:26:47,657 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 17:26:47,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 17:26:47,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 17:26:47,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 17:26:47,874 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 17:26:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 17:26:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2022-02-20 17:26:47,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 17:26:47,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936298116] [2022-02-20 17:26:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 17:26:47,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 17:26:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 17:26:47,879 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) [2022-02-20 17:26:47,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 17:26:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 17:26:49,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-20 17:26:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-02-20 17:26:51,213 INFO L286 TraceCheckSpWp]: Computing forward predicates...