./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/image_filter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/image_filter.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 7739edac33edee82d3c388da137105adbe48f8f59b0d45074d101ea06edef10e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:03:42,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:03:42,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:03:42,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:03:42,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:03:42,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:03:42,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:03:42,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:03:42,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:03:42,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:03:42,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:03:42,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:03:42,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:03:42,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:03:42,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:03:42,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:03:42,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:03:42,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:03:42,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:03:42,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:03:42,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:03:42,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:03:42,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:03:42,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:03:42,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:03:42,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:03:42,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:03:42,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:03:42,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:03:42,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:03:42,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:03:42,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:03:42,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:03:42,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:03:42,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:03:42,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:03:42,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:03:42,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:03:42,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:03:42,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:03:42,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:03:42,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:03:42,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:03:42,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:03:42,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:03:42,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:03:42,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:03:42,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:03:42,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:03:42,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:03:42,336 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:03:42,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:03:42,337 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:03:42,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:03:42,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:03:42,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:03:42,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:03:42,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:03:42,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:03:42,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:03:42,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:03:42,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:03:42,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:03:42,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:03:42,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:03:42,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:03:42,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:03:42,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:03:42,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:03:42,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:03:42,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:03:42,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:03:42,342 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:03:42,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:03:42,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:03:42,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:03:42,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7739edac33edee82d3c388da137105adbe48f8f59b0d45074d101ea06edef10e [2021-12-22 10:03:42,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:03:42,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:03:42,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:03:42,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:03:42,558 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:03:42,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/image_filter.c [2021-12-22 10:03:42,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c35edc3/b483639649dd4ca0b3fc78e01aab48d6/FLAGe4d44fcd1 [2021-12-22 10:03:43,039 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:03:43,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/image_filter.c [2021-12-22 10:03:43,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c35edc3/b483639649dd4ca0b3fc78e01aab48d6/FLAGe4d44fcd1 [2021-12-22 10:03:43,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81c35edc3/b483639649dd4ca0b3fc78e01aab48d6 [2021-12-22 10:03:43,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:03:43,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:03:43,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:03:43,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:03:43,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:03:43,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef30c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43, skipping insertion in model container [2021-12-22 10:03:43,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:03:43,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:03:43,309 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/image_filter.c[564,577] [2021-12-22 10:03:43,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:03:43,420 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:03:43,431 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/image_filter.c[564,577] [2021-12-22 10:03:43,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:03:43,495 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:03:43,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43 WrapperNode [2021-12-22 10:03:43,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:03:43,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:03:43,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:03:43,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:03:43,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,575 INFO L137 Inliner]: procedures = 21, calls = 695, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 566 [2021-12-22 10:03:43,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:03:43,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:03:43,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:03:43,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:03:43,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:03:43,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:03:43,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:03:43,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:03:43,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (1/1) ... [2021-12-22 10:03:43,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:03:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:03:43,671 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) [2021-12-22 10:03:43,695 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 [2021-12-22 10:03:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:03:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure sobel [2021-12-22 10:03:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure sobel [2021-12-22 10:03:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure blur [2021-12-22 10:03:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure blur [2021-12-22 10:03:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 10:03:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 10:03:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:03:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:03:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 10:03:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure filter [2021-12-22 10:03:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure filter [2021-12-22 10:03:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 10:03:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:03:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:03:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 10:03:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 10:03:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure sobelitereen [2021-12-22 10:03:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure sobelitereen [2021-12-22 10:03:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:03:43,998 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:03:44,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:03:47,638 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:03:47,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:03:47,647 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 10:03:47,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:03:47 BoogieIcfgContainer [2021-12-22 10:03:47,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:03:47,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:03:47,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:03:47,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:03:47,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:03:43" (1/3) ... [2021-12-22 10:03:47,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad80ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:03:47, skipping insertion in model container [2021-12-22 10:03:47,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:03:43" (2/3) ... [2021-12-22 10:03:47,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad80ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:03:47, skipping insertion in model container [2021-12-22 10:03:47,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:03:47" (3/3) ... [2021-12-22 10:03:47,656 INFO L111 eAbstractionObserver]: Analyzing ICFG image_filter.c [2021-12-22 10:03:47,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:03:47,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:03:47,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:03:47,706 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 [2021-12-22 10:03:47,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:03:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 114 states have (on average 1.236842105263158) internal successors, (141), 115 states have internal predecessors, (141), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-22 10:03:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1619 [2021-12-22 10:03:47,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:03:47,821 INFO L514 BasicCegarLoop]: trace histogram [266, 266, 40, 40, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:03:47,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:03:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:03:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash 281921596, now seen corresponding path program 1 times [2021-12-22 10:03:47,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:03:47,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929280240] [2021-12-22 10:03:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:03:47,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms