./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/floats-cbmc-regression/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:44:25,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:44:25,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:44:25,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:44:25,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:44:25,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:44:25,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:44:25,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:44:25,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:44:25,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:44:25,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:44:25,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:44:25,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:44:25,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:44:25,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:44:25,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:44:25,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:44:25,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:44:25,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:44:25,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:44:25,118 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:44:25,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:44:25,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:44:25,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:44:25,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:44:25,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:44:25,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:44:25,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:44:25,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:44:25,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:44:25,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:44:25,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:44:25,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:44:25,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:44:25,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:44:25,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:44:25,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:44:25,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:44:25,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:44:25,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:44:25,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:44:25,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:44:25,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 13:44:25,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:44:25,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:44:25,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:44:25,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:44:25,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:44:25,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:44:25,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:44:25,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:44:25,161 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:44:25,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:44:25,162 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:44:25,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 13:44:25,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:44:25,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:44:25,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:44:25,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:44:25,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:44:25,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:44:25,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:44:25,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:44:25,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:44:25,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:44:25,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 13:44:25,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 13:44:25,166 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:44:25,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:44:25,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:44:25,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2022-07-22 13:44:25,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:44:25,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:44:25,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:44:25,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:44:25,354 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:44:25,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-22 13:44:25,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20847551c/d20f5b24d51a44489bc60c72cdcb198d/FLAG72e471df6 [2022-07-22 13:44:25,738 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:44:25,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-22 13:44:25,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20847551c/d20f5b24d51a44489bc60c72cdcb198d/FLAG72e471df6 [2022-07-22 13:44:25,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20847551c/d20f5b24d51a44489bc60c72cdcb198d [2022-07-22 13:44:25,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:44:25,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:44:25,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:44:25,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:44:25,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:44:25,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49603fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25, skipping insertion in model container [2022-07-22 13:44:25,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:44:25,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:44:25,882 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/floats-cbmc-regression/float3.c[465,478] [2022-07-22 13:44:25,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:44:25,889 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:44:25,906 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/floats-cbmc-regression/float3.c[465,478] [2022-07-22 13:44:25,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:44:25,917 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:44:25,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25 WrapperNode [2022-07-22 13:44:25,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:44:25,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:44:25,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:44:25,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:44:25,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,943 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2022-07-22 13:44:25,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:44:25,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:44:25,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:44:25,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:44:25,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:44:25,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:44:25,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:44:25,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:44:25,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (1/1) ... [2022-07-22 13:44:25,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:44:25,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:44:25,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 13:44:25,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 13:44:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:44:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:44:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:44:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 13:44:26,043 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:44:26,044 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:44:26,094 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:44:26,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:44:26,098 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 13:44:26,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:44:26 BoogieIcfgContainer [2022-07-22 13:44:26,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:44:26,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:44:26,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:44:26,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:44:26,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:44:25" (1/3) ... [2022-07-22 13:44:26,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556c97d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:44:26, skipping insertion in model container [2022-07-22 13:44:26,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:25" (2/3) ... [2022-07-22 13:44:26,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556c97d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:44:26, skipping insertion in model container [2022-07-22 13:44:26,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:44:26" (3/3) ... [2022-07-22 13:44:26,107 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2022-07-22 13:44:26,116 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:44:26,116 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:44:26,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:44:26,149 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@791be70b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79ab8f58 [2022-07-22 13:44:26,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:44:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:26,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 13:44:26,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:44:26,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:44:26,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:44:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:44:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2022-07-22 13:44:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:44:26,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776552193] [2022-07-22 13:44:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:44:26,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:44:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:44:26,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 13:44:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:44:26,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 13:44:26,241 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 13:44:26,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 13:44:26,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 13:44:26,246 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 13:44:26,249 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 13:44:26,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 01:44:26 BoogieIcfgContainer [2022-07-22 13:44:26,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 13:44:26,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 13:44:26,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 13:44:26,262 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 13:44:26,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:44:26" (3/4) ... [2022-07-22 13:44:26,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 13:44:26,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 13:44:26,265 INFO L158 Benchmark]: Toolchain (without parser) took 511.94ms. Allocated memory is still 107.0MB. Free memory was 80.4MB in the beginning and 58.2MB in the end (delta: 22.2MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2022-07-22 13:44:26,265 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:44:26,266 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.01ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 82.5MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:44:26,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.35ms. Allocated memory is still 107.0MB. Free memory was 82.5MB in the beginning and 81.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 13:44:26,267 INFO L158 Benchmark]: Boogie Preprocessor took 9.86ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 80.0MB in the end (delta: 982.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:44:26,267 INFO L158 Benchmark]: RCFGBuilder took 144.69ms. Allocated memory is still 107.0MB. Free memory was 80.0MB in the beginning and 71.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:44:26,267 INFO L158 Benchmark]: TraceAbstraction took 160.40ms. Allocated memory is still 107.0MB. Free memory was 71.2MB in the beginning and 58.6MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 13:44:26,268 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 107.0MB. Free memory was 58.6MB in the beginning and 58.2MB in the end (delta: 463.0kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 13:44:26,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.01ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 82.5MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.35ms. Allocated memory is still 107.0MB. Free memory was 82.5MB in the beginning and 81.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 9.86ms. Allocated memory is still 107.0MB. Free memory was 81.0MB in the beginning and 80.0MB in the end (delta: 982.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 144.69ms. Allocated memory is still 107.0MB. Free memory was 80.0MB in the beginning and 71.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 160.40ms. Allocated memory is still 107.0MB. Free memory was 71.2MB in the beginning and 58.6MB in the end (delta: 12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 107.0MB. Free memory was 58.6MB in the beginning and 58.2MB in the end (delta: 463.0kB). Peak memory consumption was 4.2MB. 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: 26]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; VAL [d=0] [L15] int x = 2; [L17] COND TRUE __VERIFIER_nondet_int() [L18] x = 4 VAL [d=0, x=4] [L20] CALL f1() [L10] d = 1.0 VAL [d=1] [L20] RET f1() [L22] d += (x == 2) [L24] d += (x > 3) VAL [x=4] [L26] COND TRUE !(d == 2.0) VAL [x=4] [L26] reach_error() VAL [x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-22 13:44:26,297 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/floats-cbmc-regression/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:44:27,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:44:27,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:44:27,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:44:27,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:44:27,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:44:27,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:44:27,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:44:27,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:44:27,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:44:27,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:44:27,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:44:27,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:44:27,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:44:27,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:44:27,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:44:27,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:44:27,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:44:27,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:44:27,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:44:27,880 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:44:27,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:44:27,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:44:27,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:44:27,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:44:27,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:44:27,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:44:27,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:44:27,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:44:27,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:44:27,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:44:27,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:44:27,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:44:27,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:44:27,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:44:27,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:44:27,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:44:27,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:44:27,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:44:27,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:44:27,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:44:27,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:44:27,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 13:44:27,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:44:27,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:44:27,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:44:27,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:44:27,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:44:27,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:44:27,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:44:27,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:44:27,933 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:44:27,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:44:27,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:44:27,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:44:27,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:44:27,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:44:27,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:44:27,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:44:27,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 13:44:27,936 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 13:44:27,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 13:44:27,936 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:44:27,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:44:27,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:44:27,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:44:27,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:44:27,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:44:27,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:44:27,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:44:27,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:44:27,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:44:27,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:44:27,938 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 13:44:27,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 13:44:27,938 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:44:27,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:44:27,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:44:27,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 13:44:27,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2022-07-22 13:44:28,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:44:28,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:44:28,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:44:28,211 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:44:28,212 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:44:28,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-22 13:44:28,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0329566ab/c38941aafaba4d2dbb8d822d5e98ac5a/FLAGb40371c3e [2022-07-22 13:44:28,609 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:44:28,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2022-07-22 13:44:28,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0329566ab/c38941aafaba4d2dbb8d822d5e98ac5a/FLAGb40371c3e [2022-07-22 13:44:28,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0329566ab/c38941aafaba4d2dbb8d822d5e98ac5a [2022-07-22 13:44:28,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:44:28,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:44:28,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:44:28,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:44:28,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:44:28,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f878e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28, skipping insertion in model container [2022-07-22 13:44:28,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:44:28,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:44:28,759 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/floats-cbmc-regression/float3.c[465,478] [2022-07-22 13:44:28,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:44:28,779 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:44:28,820 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/floats-cbmc-regression/float3.c[465,478] [2022-07-22 13:44:28,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:44:28,831 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:44:28,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28 WrapperNode [2022-07-22 13:44:28,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:44:28,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:44:28,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:44:28,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:44:28,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,857 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2022-07-22 13:44:28,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:44:28,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:44:28,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:44:28,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:44:28,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:44:28,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:44:28,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:44:28,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:44:28,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (1/1) ... [2022-07-22 13:44:28,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:44:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:44:28,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 13:44:28,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 13:44:28,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:44:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 13:44:28,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:44:28,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:44:28,982 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:44:28,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:44:29,563 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:44:29,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:44:29,567 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 13:44:29,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:44:29 BoogieIcfgContainer [2022-07-22 13:44:29,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:44:29,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:44:29,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:44:29,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:44:29,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:44:28" (1/3) ... [2022-07-22 13:44:29,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4ce8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:44:29, skipping insertion in model container [2022-07-22 13:44:29,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:44:28" (2/3) ... [2022-07-22 13:44:29,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f4ce8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:44:29, skipping insertion in model container [2022-07-22 13:44:29,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:44:29" (3/3) ... [2022-07-22 13:44:29,573 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2022-07-22 13:44:29,582 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:44:29,582 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:44:29,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:44:29,613 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@518904dc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f63ef4f [2022-07-22 13:44:29,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:44:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 13:44:29,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:44:29,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:44:29,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:44:29,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:44:29,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2022-07-22 13:44:29,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:44:29,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143391393] [2022-07-22 13:44:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:44:29,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:44:29,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:44:29,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 13:44:29,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 13:44:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:44:29,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 13:44:29,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:44:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:44:29,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:44:29,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 13:44:29,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143391393] [2022-07-22 13:44:29,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143391393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:44:29,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:44:29,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 13:44:29,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994306655] [2022-07-22 13:44:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:44:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 13:44:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 13:44:29,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 13:44:29,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:44:29,992 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:31,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 13:44:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:44:32,017 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-07-22 13:44:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 13:44:32,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 13:44:32,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:44:32,026 INFO L225 Difference]: With dead ends: 22 [2022-07-22 13:44:32,026 INFO L226 Difference]: Without dead ends: 8 [2022-07-22 13:44:32,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 13:44:32,030 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 13:44:32,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 13:44:32,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-22 13:44:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-22 13:44:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-07-22 13:44:32,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-07-22 13:44:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:44:32,047 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-07-22 13:44:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-07-22 13:44:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 13:44:32,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:44:32,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 13:44:32,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 13:44:32,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 13:44:32,274 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:44:32,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:44:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812423, now seen corresponding path program 1 times [2022-07-22 13:44:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:44:32,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325110690] [2022-07-22 13:44:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:44:32,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:44:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:44:32,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 13:44:32,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 13:44:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:44:32,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 13:44:32,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:44:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 13:44:32,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:44:32,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 13:44:32,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325110690] [2022-07-22 13:44:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325110690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:44:32,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:44:32,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 13:44:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300121086] [2022-07-22 13:44:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:44:32,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 13:44:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 13:44:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 13:44:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 13:44:32,527 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:44:32,967 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-07-22 13:44:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 13:44:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 13:44:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:44:32,967 INFO L225 Difference]: With dead ends: 8 [2022-07-22 13:44:32,967 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 13:44:32,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 13:44:32,969 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 13:44:32,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 13:44:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 13:44:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 13:44:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 13:44:32,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-07-22 13:44:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:44:32,970 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 13:44:32,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 13:44:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 13:44:32,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 13:44:32,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 13:44:32,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 13:44:33,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 13:44:33,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 27) no Hoare annotation was computed. [2022-07-22 13:44:33,191 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 11) no Hoare annotation was computed. [2022-07-22 13:44:33,193 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 13:44:33,194 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 13:44:33,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 01:44:33 BoogieIcfgContainer [2022-07-22 13:44:33,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 13:44:33,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 13:44:33,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 13:44:33,201 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 13:44:33,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:44:29" (3/4) ... [2022-07-22 13:44:33,204 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 13:44:33,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-22 13:44:33,211 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 13:44:33,212 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 13:44:33,212 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 13:44:33,236 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 13:44:33,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 13:44:33,236 INFO L158 Benchmark]: Toolchain (without parser) took 4609.89ms. Allocated memory is still 75.5MB. Free memory was 57.2MB in the beginning and 35.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-07-22 13:44:33,237 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 55.5MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:44:33,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.44ms. Allocated memory is still 75.5MB. Free memory was 57.0MB in the beginning and 58.1MB in the end (delta: -1.1MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-07-22 13:44:33,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.52ms. Allocated memory is still 75.5MB. Free memory was 58.1MB in the beginning and 56.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:44:33,238 INFO L158 Benchmark]: Boogie Preprocessor took 27.74ms. Allocated memory is still 75.5MB. Free memory was 56.8MB in the beginning and 55.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:44:33,238 INFO L158 Benchmark]: RCFGBuilder took 681.97ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 47.3MB in the end (delta: 8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 13:44:33,238 INFO L158 Benchmark]: TraceAbstraction took 3630.51ms. Allocated memory is still 75.5MB. Free memory was 46.8MB in the beginning and 37.4MB in the end (delta: 9.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-22 13:44:33,239 INFO L158 Benchmark]: Witness Printer took 35.23ms. Allocated memory is still 75.5MB. Free memory was 37.4MB in the beginning and 35.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 13:44:33,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 55.5MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.44ms. Allocated memory is still 75.5MB. Free memory was 57.0MB in the beginning and 58.1MB in the end (delta: -1.1MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.52ms. Allocated memory is still 75.5MB. Free memory was 58.1MB in the beginning and 56.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.74ms. Allocated memory is still 75.5MB. Free memory was 56.8MB in the beginning and 55.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 681.97ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 47.3MB in the end (delta: 8.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3630.51ms. Allocated memory is still 75.5MB. Free memory was 46.8MB in the beginning and 37.4MB in the end (delta: 9.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 35.23ms. Allocated memory is still 75.5MB. Free memory was 37.4MB in the beginning and 35.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 6 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 13:44:33,287 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 Writing output log to file Ultimate.log Result: TRUE