./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:26:42,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:26:42,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:26:42,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:26:42,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:26:42,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:26:42,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:26:42,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:26:42,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:26:42,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:26:42,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:26:42,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:26:42,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:26:42,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:26:42,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:26:42,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:26:42,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:26:42,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:26:42,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:26:42,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:26:42,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:26:42,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:26:42,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:26:42,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:26:42,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:26:42,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:26:42,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:26:43,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:26:43,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:26:43,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:26:43,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:26:43,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:26:43,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:26:43,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:26:43,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:26:43,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:26:43,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:26:43,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:26:43,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:26:43,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:26:43,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:26:43,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:26:43,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:26:43,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:26:43,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:26:43,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:26:43,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:26:43,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:26:43,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:26:43,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:26:43,037 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:26:43,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:26:43,038 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:26:43,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:26:43,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:26:43,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:26:43,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:26:43,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:26:43,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:26:43,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:26:43,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:26:43,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:26:43,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:26:43,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:26:43,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:26:43,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:26:43,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:26:43,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:26:43,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:26:43,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2022-02-20 16:26:43,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:26:43,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:26:43,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:26:43,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:26:43,314 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:26:43,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-02-20 16:26:43,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d18979e84/6b1d0e91cff640f38a9c3a1e508491e4/FLAG96b269706 [2022-02-20 16:26:43,667 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:26:43,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-02-20 16:26:43,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d18979e84/6b1d0e91cff640f38a9c3a1e508491e4/FLAG96b269706 [2022-02-20 16:26:44,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d18979e84/6b1d0e91cff640f38a9c3a1e508491e4 [2022-02-20 16:26:44,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:26:44,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:26:44,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:26:44,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:26:44,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:26:44,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1bfc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44, skipping insertion in model container [2022-02-20 16:26:44,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:26:44,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:26:44,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2022-02-20 16:26:44,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:26:44,255 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:26:44,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2022-02-20 16:26:44,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:26:44,275 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:26:44,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44 WrapperNode [2022-02-20 16:26:44,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:26:44,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:26:44,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:26:44,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:26:44,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,297 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-02-20 16:26:44,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:26:44,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:26:44,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:26:44,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:26:44,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:26:44,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:26:44,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:26:44,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:26:44,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (1/1) ... [2022-02-20 16:26:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:26:44,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:26:44,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:26:44,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:26:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:26:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:26:44,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:26:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:26:44,399 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:26:44,400 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:26:44,469 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:26:44,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:26:44,474 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:26:44,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:26:44 BoogieIcfgContainer [2022-02-20 16:26:44,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:26:44,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:26:44,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:26:44,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:26:44,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:26:44" (1/3) ... [2022-02-20 16:26:44,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ea004f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:26:44, skipping insertion in model container [2022-02-20 16:26:44,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:44" (2/3) ... [2022-02-20 16:26:44,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ea004f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:26:44, skipping insertion in model container [2022-02-20 16:26:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:26:44" (3/3) ... [2022-02-20 16:26:44,492 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2022-02-20 16:26:44,496 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:26:44,496 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:26:44,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:26:44,541 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:26:44,541 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:26:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:26:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-20 16:26:44,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:26:44,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:26:44,570 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:26:44,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:26:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-02-20 16:26:44,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:26:44,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128668991] [2022-02-20 16:26:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:26:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:26:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:26:44,696 INFO L290 TraceCheckUtils]: 0: Hoare triple {16#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); {16#true} is VALID [2022-02-20 16:26:44,696 INFO L290 TraceCheckUtils]: 1: Hoare triple {16#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~someBinaryDOUBLEComparisonOperation(main_~x~0#1, 0.0) && ~someBinaryDOUBLEComparisonOperation(main_~x~0#1, 10.0) then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {16#true} is VALID [2022-02-20 16:26:44,697 INFO L290 TraceCheckUtils]: 2: Hoare triple {16#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {17#false} is VALID [2022-02-20 16:26:44,698 INFO L290 TraceCheckUtils]: 3: Hoare triple {17#false} assume { :end_inline_assume_abort_if_not } true;main_~y~0#1 := ~someBinaryArithmeticDOUBLEoperation(~someBinaryArithmeticDOUBLEoperation(main_~x~0#1, main_~x~0#1), main_~x~0#1); {17#false} is VALID [2022-02-20 16:26:44,698 INFO L290 TraceCheckUtils]: 4: Hoare triple {17#false} assume ~someBinaryDOUBLEComparisonOperation(main_~y~0#1, ~convertINTToDOUBLE(0));main_~y~0#1 := ~someBinaryArithmeticDOUBLEoperation(main_~x~0#1, 10.0); {17#false} is VALID [2022-02-20 16:26:44,698 INFO L290 TraceCheckUtils]: 5: Hoare triple {17#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~someBinaryDOUBLEComparisonOperation(main_~y~0#1, 0.0) && ~someBinaryDOUBLEComparisonOperation(main_~y~0#1, 4.0) then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {17#false} is VALID [2022-02-20 16:26:44,699 INFO L290 TraceCheckUtils]: 6: Hoare triple {17#false} assume 0 == __VERIFIER_assert_~cond#1; {17#false} is VALID [2022-02-20 16:26:44,699 INFO L290 TraceCheckUtils]: 7: Hoare triple {17#false} assume !false; {17#false} is VALID [2022-02-20 16:26:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:26:44,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:26:44,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128668991] [2022-02-20 16:26:44,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128668991] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:26:44,702 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:26:44,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:26:44,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503873412] [2022-02-20 16:26:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:26:44,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-02-20 16:26:44,710 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:26:44,713 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:44,755 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:26:44,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:26:44,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:26:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:26:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:26:44,771 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:26:44,815 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-02-20 16:26:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:26:44,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-02-20 16:26:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:26:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:26:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:26:44,822 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 26 transitions. [2022-02-20 16:26:44,856 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:26:44,861 INFO L225 Difference]: With dead ends: 23 [2022-02-20 16:26:44,864 INFO L226 Difference]: Without dead ends: 9 [2022-02-20 16:26:44,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:26:44,868 INFO L933 BasicCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:26:44,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:26:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-02-20 16:26:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-02-20 16:26:44,889 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:26:44,890 INFO L82 GeneralOperation]: Start isEquivalent. First operand 9 states. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:44,891 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:44,892 INFO L87 Difference]: Start difference. First operand 9 states. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:26:44,894 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-02-20 16:26:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 16:26:44,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:26:44,895 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:26:44,896 INFO L74 IsIncluded]: Start isIncluded. First operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 9 states. [2022-02-20 16:26:44,897 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 9 states. [2022-02-20 16:26:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:26:44,900 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-02-20 16:26:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 16:26:44,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:26:44,901 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:26:44,901 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:26:44,901 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:26:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-02-20 16:26:44,905 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-02-20 16:26:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:26:44,905 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-02-20 16:26:44,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 16:26:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-20 16:26:44,907 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:26:44,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:26:44,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:26:44,908 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:26:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:26:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-02-20 16:26:44,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:26:44,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298345565] [2022-02-20 16:26:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:26:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:26:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:26:44,944 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:26:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:26:44,981 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:26:44,982 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:26:44,989 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:26:44,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:26:44,996 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:26:44,998 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:26:45,019 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:26:45,023 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:26:45,023 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-02-20 16:26:45,023 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L14-3 has no Hoare annotation [2022-02-20 16:26:45,024 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-02-20 16:26:45,025 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:26:45,025 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:26:45,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:26:45 BoogieIcfgContainer [2022-02-20 16:26:45,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:26:45,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:26:45,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:26:45,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:26:45,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:26:44" (3/4) ... [2022-02-20 16:26:45,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 16:26:45,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:26:45,030 INFO L158 Benchmark]: Toolchain (without parser) took 915.39ms. Allocated memory is still 102.8MB. Free memory was 66.9MB in the beginning and 78.3MB in the end (delta: -11.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:26:45,031 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:26:45,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.78ms. Allocated memory is still 102.8MB. Free memory was 66.7MB in the beginning and 79.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:26:45,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.42ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:26:45,034 INFO L158 Benchmark]: Boogie Preprocessor took 12.00ms. Allocated memory is still 102.8MB. Free memory was 77.5MB in the beginning and 76.8MB in the end (delta: 765.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:26:45,036 INFO L158 Benchmark]: RCFGBuilder took 164.72ms. Allocated memory is still 102.8MB. Free memory was 76.3MB in the beginning and 67.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:26:45,036 INFO L158 Benchmark]: TraceAbstraction took 549.38ms. Allocated memory is still 102.8MB. Free memory was 67.0MB in the beginning and 78.3MB in the end (delta: -11.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-02-20 16:26:45,036 INFO L158 Benchmark]: Witness Printer took 2.91ms. Allocated memory is still 102.8MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:26:45,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 158.78ms. Allocated memory is still 102.8MB. Free memory was 66.7MB in the beginning and 79.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.42ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 77.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.00ms. Allocated memory is still 102.8MB. Free memory was 77.5MB in the beginning and 76.8MB in the end (delta: 765.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 164.72ms. Allocated memory is still 102.8MB. Free memory was 76.3MB in the beginning and 67.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 549.38ms. Allocated memory is still 102.8MB. Free memory was 67.0MB in the beginning and 78.3MB in the end (delta: -11.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 2.91ms. Allocated memory is still 102.8MB. Free memory is still 78.3MB. 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: 14]: 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 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L21] CALL assume_abort_if_not(x >= 0. && x <= 10.) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= 0. && x <= 10.) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L27] CALL __VERIFIER_assert(y >= 0. && y <= 4.) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 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, 13 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=13occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2022-02-20 16:26:45,067 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 -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.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 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:26:46,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:26:46,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:26:46,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:26:46,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:26:46,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:26:46,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:26:46,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:26:46,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:26:46,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:26:46,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:26:46,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:26:46,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:26:46,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:26:46,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:26:46,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:26:46,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:26:46,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:26:46,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:26:46,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:26:46,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:26:46,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:26:46,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:26:46,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:26:46,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:26:46,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:26:46,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:26:46,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:26:46,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:26:46,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:26:46,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:26:46,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:26:46,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:26:46,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:26:46,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:26:46,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:26:46,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:26:46,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:26:46,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:26:46,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:26:46,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:26:46,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:26:46,798 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:26:46,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:26:46,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:26:46,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:26:46,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:26:46,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:26:46,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:26:46,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:26:46,802 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:26:46,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:26:46,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:26:46,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:26:46,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:26:46,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:26:46,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:26:46,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:26:46,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:26:46,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:26:46,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:26:46,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:26:46,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:26:46,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:26:46,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:26:46,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:26:46,810 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:26:46,810 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:26:46,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:26:46,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:26:46,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:26:46,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:26:46,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18dbda2434c7285b61a25f8bfa64cf4514b67a5c7ac1b7a618b1696469e2b1b4 [2022-02-20 16:26:47,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:26:47,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:26:47,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:26:47,084 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:26:47,084 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:26:47,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-02-20 16:26:47,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9030ec415/dbef74d61d09457492d51d9f1754f628/FLAGe691e4a23 [2022-02-20 16:26:47,475 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:26:47,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2022-02-20 16:26:47,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9030ec415/dbef74d61d09457492d51d9f1754f628/FLAGe691e4a23 [2022-02-20 16:26:47,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9030ec415/dbef74d61d09457492d51d9f1754f628 [2022-02-20 16:26:47,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:26:47,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:26:47,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:26:47,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:26:47,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:26:47,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba06dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47, skipping insertion in model container [2022-02-20 16:26:47,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:26:47,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:26:47,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2022-02-20 16:26:47,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:26:47,676 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:26:47,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c[577,590] [2022-02-20 16:26:47,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:26:47,715 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:26:47,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47 WrapperNode [2022-02-20 16:26:47,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:26:47,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:26:47,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:26:47,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:26:47,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,751 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-02-20 16:26:47,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:26:47,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:26:47,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:26:47,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:26:47,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:26:47,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:26:47,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:26:47,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:26:47,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (1/1) ... [2022-02-20 16:26:47,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:26:47,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:26:47,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:26:47,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:26:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:26:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:26:47,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:26:47,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:26:47,901 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:26:47,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:26:50,809 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:26:50,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:26:50,814 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:26:50,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:26:50 BoogieIcfgContainer [2022-02-20 16:26:50,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:26:50,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:26:50,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:26:50,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:26:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:26:47" (1/3) ... [2022-02-20 16:26:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684a53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:26:50, skipping insertion in model container [2022-02-20 16:26:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:26:47" (2/3) ... [2022-02-20 16:26:50,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684a53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:26:50, skipping insertion in model container [2022-02-20 16:26:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:26:50" (3/3) ... [2022-02-20 16:26:50,830 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2022-02-20 16:26:50,833 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:26:50,834 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:26:50,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:26:50,872 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:26:50,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:26:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:26:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-20 16:26:50,886 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:26:50,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:26:50,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:26:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:26:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2022-02-20 16:26:50,903 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:26:50,903 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195067518] [2022-02-20 16:26:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:26:50,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:26:50,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:26:50,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:26:50,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:26:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:26:51,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 16:26:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:26:51,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:26:51,399 INFO L290 TraceCheckUtils]: 0: Hoare triple {16#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {16#true} is VALID [2022-02-20 16:26:51,399 INFO L290 TraceCheckUtils]: 1: Hoare triple {16#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.geq~DOUBLE(main_~x~0#1, ~Pluszero~DOUBLE()) && ~fp.leq~DOUBLE(main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 10.0)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {16#true} is VALID [2022-02-20 16:26:51,400 INFO L290 TraceCheckUtils]: 2: Hoare triple {16#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {17#false} is VALID [2022-02-20 16:26:51,400 INFO L290 TraceCheckUtils]: 3: Hoare triple {17#false} assume { :end_inline_assume_abort_if_not } true;main_~y~0#1 := ~fp.sub~DOUBLE(currentRoundingMode, ~fp.mul~DOUBLE(currentRoundingMode, main_~x~0#1, main_~x~0#1), main_~x~0#1); {17#false} is VALID [2022-02-20 16:26:51,400 INFO L290 TraceCheckUtils]: 4: Hoare triple {17#false} assume ~fp.geq~DOUBLE(main_~y~0#1, ~convertINTToDOUBLE(currentRoundingMode, 0bv32));main_~y~0#1 := ~fp.div~DOUBLE(currentRoundingMode, main_~x~0#1, ~to_fp~DOUBLE(currentRoundingMode, 10.0)); {17#false} is VALID [2022-02-20 16:26:51,401 INFO L290 TraceCheckUtils]: 5: Hoare triple {17#false} assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~fp.geq~DOUBLE(main_~y~0#1, ~Pluszero~DOUBLE()) && ~fp.leq~DOUBLE(main_~y~0#1, ~to_fp~DOUBLE(currentRoundingMode, 4.0)) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {17#false} is VALID [2022-02-20 16:26:51,401 INFO L290 TraceCheckUtils]: 6: Hoare triple {17#false} assume 0bv32 == __VERIFIER_assert_~cond#1; {17#false} is VALID [2022-02-20 16:26:51,401 INFO L290 TraceCheckUtils]: 7: Hoare triple {17#false} assume !false; {17#false} is VALID [2022-02-20 16:26:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:26:51,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:26:51,403 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:26:51,404 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195067518] [2022-02-20 16:26:51,404 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195067518] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:26:51,404 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:26:51,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:26:51,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350365506] [2022-02-20 16:26:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:26:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-02-20 16:26:51,411 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:26:51,413 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:51,961 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:26:51,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:26:51,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:26:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:26:51,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:26:51,977 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:26:53,021 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-02-20 16:26:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:26:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-02-20 16:26:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:26:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:26:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:26:53,028 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 26 transitions. [2022-02-20 16:26:54,368 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:26:54,372 INFO L225 Difference]: With dead ends: 23 [2022-02-20 16:26:54,373 INFO L226 Difference]: Without dead ends: 9 [2022-02-20 16:26:54,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:26:54,377 INFO L933 BasicCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:26:54,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:26:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-02-20 16:26:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-02-20 16:26:54,392 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:26:54,393 INFO L82 GeneralOperation]: Start isEquivalent. First operand 9 states. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:54,393 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:54,394 INFO L87 Difference]: Start difference. First operand 9 states. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:26:54,395 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-02-20 16:26:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 16:26:54,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:26:54,396 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:26:54,396 INFO L74 IsIncluded]: Start isIncluded. First operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 9 states. [2022-02-20 16:26:54,396 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 9 states. [2022-02-20 16:26:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:26:54,397 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-02-20 16:26:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 16:26:54,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:26:54,398 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:26:54,398 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:26:54,398 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:26:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-02-20 16:26:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-02-20 16:26:54,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2022-02-20 16:26:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:26:54,400 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-02-20 16:26:54,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-02-20 16:26:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-02-20 16:26:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-20 16:26:54,401 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:26:54,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:26:54,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 16:26:54,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:26:54,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:26:54,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:26:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2022-02-20 16:26:54,606 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:26:54,606 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377350607] [2022-02-20 16:26:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:26:54,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:26:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:26:54,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:26:54,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:26:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:26:54,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-20 16:26:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-02-20 16:26:57,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:27:25,877 WARN L228 SmtUtils]: Spent 6.53s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)