/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/float-benchs/image_filter.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:43:49,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:43:49,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:43:49,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:43:49,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:43:49,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:43:49,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:43:49,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:43:49,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:43:49,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:43:49,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:43:49,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:43:49,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:43:49,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:43:49,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:43:49,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:43:49,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:43:49,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:43:49,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:43:49,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:43:49,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:43:49,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:43:49,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:43:49,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:43:49,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:43:49,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:43:49,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:43:49,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:43:49,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:43:49,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:43:49,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:43:49,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:43:49,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:43:49,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:43:49,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:43:49,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:43:49,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:43:49,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:43:49,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:43:49,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:43:49,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:43:49,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:43:49,783 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:43:49,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:43:49,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:43:49,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:43:49,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:43:49,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:43:49,784 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:43:49,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:43:49,785 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:43:49,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:43:49,785 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:43:49,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:43:49,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:43:49,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:43:49,786 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:43:49,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:43:49,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:43:49,786 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:43:49,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:43:49,786 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:43:49,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:43:49,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:49,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:43:49,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:43:49,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:43:49,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:43:49,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:43:49,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:43:49,970 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:43:49,971 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:43:49,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/image_filter.c [2023-03-31 22:43:50,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:43:51,147 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:43:51,148 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/image_filter.c [2023-03-31 22:43:51,153 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365e21a0e/a4d9ddcb3c384dd4b6647d0aac7d171e/FLAG7c14f6936 [2023-03-31 22:43:51,163 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/365e21a0e/a4d9ddcb3c384dd4b6647d0aac7d171e [2023-03-31 22:43:51,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:43:51,166 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:43:51,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:51,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:43:51,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:43:51,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197dbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51, skipping insertion in model container [2023-03-31 22:43:51,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:43:51,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:43:51,300 WARN L247 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] [2023-03-31 22:43:51,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:51,354 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:43:51,362 WARN L247 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] [2023-03-31 22:43:51,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:43:51,416 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:43:51,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51 WrapperNode [2023-03-31 22:43:51,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:43:51,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:43:51,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:43:51,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:43:51,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,492 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:43:51,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:43:51,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:43:51,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:43:51,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (1/1) ... [2023-03-31 22:43:51,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:43:51,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:43:51,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 22:43:51,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 22:43:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure blur [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sobel [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure filter [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sobelitereen [2023-03-31 22:43:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:43:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure blur [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure sobel [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure filter [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure sobelitereen [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 22:43:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:43:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:43:51,734 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:43:51,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:43:55,282 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:43:55,327 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:43:55,327 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 22:43:55,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:55 BoogieIcfgContainer [2023-03-31 22:43:55,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:43:55,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:43:55,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:43:55,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:43:55,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:43:51" (1/3) ... [2023-03-31 22:43:55,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d8eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:55, skipping insertion in model container [2023-03-31 22:43:55,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:43:51" (2/3) ... [2023-03-31 22:43:55,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d8eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:43:55, skipping insertion in model container [2023-03-31 22:43:55,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:43:55" (3/3) ... [2023-03-31 22:43:55,335 INFO L112 eAbstractionObserver]: Analyzing ICFG image_filter.c [2023-03-31 22:43:55,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:43:55,348 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:43:55,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:43:55,398 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f1fc6f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:43:55,398 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:43:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 85 states have internal predecessors, (87), 74 states have call successors, (74), 8 states have call predecessors, (74), 8 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-03-31 22:43:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1298 [2023-03-31 22:43:55,450 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:43:55,452 INFO L195 NwaCegarLoop]: trace histogram [266, 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, 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, 1] [2023-03-31 22:43:55,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:43:55,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:43:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash 249117338, now seen corresponding path program 1 times [2023-03-31 22:43:55,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:43:55,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40694313] [2023-03-31 22:43:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:43:55,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms