./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire1.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 a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:18:34,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:18:34,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:18:34,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:18:34,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:18:34,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:18:34,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:18:34,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:18:34,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:18:34,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:18:34,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:18:34,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:18:34,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:18:34,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:18:34,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:18:34,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:18:34,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:18:34,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:18:34,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:18:34,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:18:34,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:18:34,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:18:34,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:18:34,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:18:34,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:18:34,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:18:34,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:18:34,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:18:34,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:18:34,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:18:34,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:18:34,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:18:34,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:18:34,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:18:34,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:18:34,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:18:34,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:18:34,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:18:34,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:18:34,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:18:34,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:18:34,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:18:34,773 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:18:34,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:18:34,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:18:34,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:18:34,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:18:34,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:18:34,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:18:34,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:18:34,776 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:18:34,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:18:34,777 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:18:34,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:18:34,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:18:34,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:18:34,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:18:34,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:18:34,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:18:34,778 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:18:34,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:18:34,779 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:18:34,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:18:34,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:18:34,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:18:34,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:18:34,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:18:34,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:18:34,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:18:34,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:18:34,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:18:34,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:18:34,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:18:34,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:18:34,782 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:18:34,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:18:34,782 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:18:34,782 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec [2023-02-18 16:18:35,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:18:35,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:18:35,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:18:35,064 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:18:35,065 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:18:35,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire1.c [2023-02-18 16:18:36,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:18:36,288 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:18:36,288 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire1.c [2023-02-18 16:18:36,294 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054afdd48/3e77102e511d45b39f6ceddc80df2573/FLAGdc3fa5f17 [2023-02-18 16:18:36,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/054afdd48/3e77102e511d45b39f6ceddc80df2573 [2023-02-18 16:18:36,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:18:36,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:18:36,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:18:36,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:18:36,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:18:36,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6904daa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36, skipping insertion in model container [2023-02-18 16:18:36,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:18:36,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:18:36,471 WARN L237 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/freire1.c[712,725] [2023-02-18 16:18:36,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:18:36,500 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:18:36,509 WARN L237 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/freire1.c[712,725] [2023-02-18 16:18:36,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:18:36,528 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:18:36,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36 WrapperNode [2023-02-18 16:18:36,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:18:36,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:18:36,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:18:36,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:18:36,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,552 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-02-18 16:18:36,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:18:36,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:18:36,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:18:36,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:18:36,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:18:36,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:18:36,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:18:36,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:18:36,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (1/1) ... [2023-02-18 16:18:36,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:18:36,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:18:36,600 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) [2023-02-18 16:18:36,616 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 [2023-02-18 16:18:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:18:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:18:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:18:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:18:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:18:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:18:36,728 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:18:36,730 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:18:36,865 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:18:36,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:18:36,871 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 16:18:36,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:36 BoogieIcfgContainer [2023-02-18 16:18:36,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:18:36,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:18:36,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:18:36,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:18:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:18:36" (1/3) ... [2023-02-18 16:18:36,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca27e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:36, skipping insertion in model container [2023-02-18 16:18:36,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:36" (2/3) ... [2023-02-18 16:18:36,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca27e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:36, skipping insertion in model container [2023-02-18 16:18:36,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:36" (3/3) ... [2023-02-18 16:18:36,880 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1.c [2023-02-18 16:18:36,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:18:36,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:18:36,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:18:36,943 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3fc384a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:18:36,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:18:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-02-18 16:18:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 16:18:36,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:36,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:36,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1818803301, now seen corresponding path program 1 times [2023-02-18 16:18:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:18:36,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796944167] [2023-02-18 16:18:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:36,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:18:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:18:37,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:18:37,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:18:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796944167] [2023-02-18 16:18:37,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796944167] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:18:37,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:18:37,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:18:37,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076614688] [2023-02-18 16:18:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:18:37,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:18:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:18:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:18:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:18:37,136 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-18 16:18:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:18:37,157 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2023-02-18 16:18:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:18:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2023-02-18 16:18:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:18:37,164 INFO L225 Difference]: With dead ends: 30 [2023-02-18 16:18:37,165 INFO L226 Difference]: Without dead ends: 12 [2023-02-18 16:18:37,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:18:37,170 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2023-02-18 16:18:37,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:18:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-18 16:18:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-18 16:18:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-02-18 16:18:37,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-18 16:18:37,194 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-02-18 16:18:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:18:37,195 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-18 16:18:37,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-18 16:18:37,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-18 16:18:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 16:18:37,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:37,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:37,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 16:18:37,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:37,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1811355551, now seen corresponding path program 1 times [2023-02-18 16:18:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:18:37,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279677846] [2023-02-18 16:18:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:37,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:18:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:18:37,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 16:18:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:18:37,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 16:18:37,232 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-18 16:18:37,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:18:37,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 16:18:37,238 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-02-18 16:18:37,241 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:18:37,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:18:37 BoogieIcfgContainer [2023-02-18 16:18:37,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:18:37,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:18:37,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:18:37,256 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:18:37,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:36" (3/4) ... [2023-02-18 16:18:37,260 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-18 16:18:37,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:18:37,261 INFO L158 Benchmark]: Toolchain (without parser) took 944.29ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 81.4MB in the beginning and 114.3MB in the end (delta: -32.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:37,261 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:37,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.32ms. Allocated memory is still 125.8MB. Free memory was 81.4MB in the beginning and 71.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:18:37,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.37ms. Allocated memory is still 125.8MB. Free memory was 71.2MB in the beginning and 69.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:37,263 INFO L158 Benchmark]: Boogie Preprocessor took 17.79ms. Allocated memory is still 125.8MB. Free memory was 69.6MB in the beginning and 68.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:18:37,263 INFO L158 Benchmark]: RCFGBuilder took 301.02ms. Allocated memory is still 125.8MB. Free memory was 68.5MB in the beginning and 59.5MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 16:18:37,264 INFO L158 Benchmark]: TraceAbstraction took 380.99ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 58.6MB in the beginning and 114.3MB in the end (delta: -55.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:37,264 INFO L158 Benchmark]: Witness Printer took 3.99ms. Allocated memory is still 151.0MB. Free memory is still 114.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:37,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.32ms. Allocated memory is still 125.8MB. Free memory was 81.4MB in the beginning and 71.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.37ms. Allocated memory is still 125.8MB. Free memory was 71.2MB in the beginning and 69.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.79ms. Allocated memory is still 125.8MB. Free memory was 69.6MB in the beginning and 68.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 301.02ms. Allocated memory is still 125.8MB. Free memory was 68.5MB in the beginning and 59.5MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 380.99ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 58.6MB in the beginning and 114.3MB in the end (delta: -55.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.99ms. Allocated memory is still 151.0MB. Free memory is still 114.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 VAL [r=0] [L31] COND TRUE 1 VAL [r=0] [L32] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-18 16:18:37,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/freire1.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 a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:18:39,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:18:39,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:18:39,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:18:39,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:18:39,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:18:39,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:18:39,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:18:39,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:18:39,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:18:39,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:18:39,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:18:39,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:18:39,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:18:39,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:18:39,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:18:39,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:18:39,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:18:39,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:18:39,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:18:39,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:18:39,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:18:39,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:18:39,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:18:39,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:18:39,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:18:39,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:18:39,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:18:39,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:18:39,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:18:39,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:18:39,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:18:39,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:18:39,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:18:39,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:18:39,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:18:39,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:18:39,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:18:39,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:18:39,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:18:39,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:18:39,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-18 16:18:39,477 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:18:39,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:18:39,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:18:39,479 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:18:39,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:18:39,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:18:39,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:18:39,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:18:39,481 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:18:39,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:18:39,482 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:18:39,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:18:39,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:18:39,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:18:39,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:18:39,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:18:39,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 16:18:39,483 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 16:18:39,483 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 16:18:39,483 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:18:39,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:18:39,484 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:18:39,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:18:39,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:18:39,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:18:39,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:18:39,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:18:39,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:18:39,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:18:39,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:18:39,486 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 16:18:39,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 16:18:39,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:18:39,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:18:39,486 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:18:39,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:18:39,487 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 16:18:39,487 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:18:39,487 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69393ce5fe75f7ab01b3582ad0675909e9396d47152d54bb12cb1909ec8c6ec [2023-02-18 16:18:39,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:18:39,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:18:39,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:18:39,836 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:18:39,837 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:18:39,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire1.c [2023-02-18 16:18:41,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:18:41,241 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:18:41,242 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire1.c [2023-02-18 16:18:41,247 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790c06f2f/2c54e4a0a41b4a538e83ef9b137b8519/FLAGbeebc3cb4 [2023-02-18 16:18:41,263 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790c06f2f/2c54e4a0a41b4a538e83ef9b137b8519 [2023-02-18 16:18:41,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:18:41,266 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:18:41,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:18:41,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:18:41,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:18:41,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79523ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41, skipping insertion in model container [2023-02-18 16:18:41,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:18:41,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:18:41,398 WARN L237 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/freire1.c[712,725] [2023-02-18 16:18:41,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:18:41,422 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:18:41,432 WARN L237 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/freire1.c[712,725] [2023-02-18 16:18:41,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:18:41,448 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:18:41,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41 WrapperNode [2023-02-18 16:18:41,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:18:41,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:18:41,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:18:41,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:18:41,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,489 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-02-18 16:18:41,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:18:41,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:18:41,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:18:41,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:18:41,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:18:41,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:18:41,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:18:41,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:18:41,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (1/1) ... [2023-02-18 16:18:41,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:18:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:18:41,578 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) [2023-02-18 16:18:41,594 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 [2023-02-18 16:18:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:18:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 16:18:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:18:41,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:18:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:18:41,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:18:41,688 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:18:41,692 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:18:42,907 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:18:42,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:18:42,912 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 16:18:42,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:42 BoogieIcfgContainer [2023-02-18 16:18:42,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:18:42,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:18:42,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:18:42,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:18:42,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:18:41" (1/3) ... [2023-02-18 16:18:42,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8b5587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:42, skipping insertion in model container [2023-02-18 16:18:42,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:41" (2/3) ... [2023-02-18 16:18:42,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8b5587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:42, skipping insertion in model container [2023-02-18 16:18:42,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:42" (3/3) ... [2023-02-18 16:18:42,921 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1.c [2023-02-18 16:18:42,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:18:42,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:18:42,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:18:42,980 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5952f206, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:18:42,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:18:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-02-18 16:18:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 16:18:42,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:42,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:42,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1818803301, now seen corresponding path program 1 times [2023-02-18 16:18:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 16:18:43,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578077513] [2023-02-18 16:18:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:43,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 16:18:43,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 16:18:43,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 16:18:43,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-18 16:18:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:18:43,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 16:18:43,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:18:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:18:43,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:18:43,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 16:18:43,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578077513] [2023-02-18 16:18:43,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578077513] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:18:43,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:18:43,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:18:43,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475845388] [2023-02-18 16:18:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:18:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:18:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 16:18:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:18:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:18:43,373 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-18 16:18:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:18:43,389 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2023-02-18 16:18:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:18:43,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2023-02-18 16:18:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:18:43,397 INFO L225 Difference]: With dead ends: 30 [2023-02-18 16:18:43,397 INFO L226 Difference]: Without dead ends: 12 [2023-02-18 16:18:43,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:18:43,402 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2023-02-18 16:18:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:18:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-18 16:18:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-18 16:18:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-02-18 16:18:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-18 16:18:43,428 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-02-18 16:18:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:18:43,428 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-18 16:18:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-18 16:18:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-18 16:18:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 16:18:43,429 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:43,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:43,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-18 16:18:43,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 16:18:43,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1811355551, now seen corresponding path program 1 times [2023-02-18 16:18:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 16:18:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095425265] [2023-02-18 16:18:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:43,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-18 16:18:43,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 16:18:43,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-18 16:18:43,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-18 16:18:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:18:43,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 16:18:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:18:44,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Invalid model [2023-02-18 16:18:44,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [332398525] [2023-02-18 16:18:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:44,244 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-18 16:18:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-18 16:18:44,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-18 16:18:44,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-02-18 16:18:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 16:18:44,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 16:18:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat