./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_tiling_tcpy.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 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 10:33:13,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 10:33:13,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 10:33:13,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 10:33:13,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 10:33:13,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 10:33:13,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 10:33:13,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 10:33:13,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 10:33:13,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 10:33:13,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 10:33:13,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 10:33:13,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 10:33:13,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 10:33:13,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 10:33:13,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 10:33:13,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 10:33:13,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 10:33:13,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 10:33:13,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 10:33:13,173 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 10:33:13,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 10:33:13,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 10:33:13,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 10:33:13,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 10:33:13,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 10:33:13,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 10:33:13,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 10:33:13,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 10:33:13,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 10:33:13,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 10:33:13,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 10:33:13,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 10:33:13,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 10:33:13,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 10:33:13,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 10:33:13,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 10:33:13,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 10:33:13,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 10:33:13,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 10:33:13,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 10:33:13,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 10:33:13,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 10:33:13,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 10:33:13,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 10:33:13,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 10:33:13,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 10:33:13,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 10:33:13,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 10:33:13,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 10:33:13,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 10:33:13,231 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 10:33:13,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 10:33:13,236 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 10:33:13,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 10:33:13,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 10:33:13,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 10:33:13,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 10:33:13,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 10:33:13,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 10:33:13,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 10:33:13,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 10:33:13,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 10:33:13,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 10:33:13,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 10:33:13,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 10:33:13,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 10:33:13,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:33:13,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 10:33:13,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 10:33:13,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 10:33:13,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 10:33:13,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 10:33:13,241 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 10:33:13,241 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 10:33:13,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 10:33:13,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2022-07-22 10:33:13,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 10:33:13,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 10:33:13,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 10:33:13,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 10:33:13,511 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 10:33:13,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2022-07-22 10:33:13,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528199034/4bd1d51c9cb04001a910cc2e0f61b032/FLAGd958d1332 [2022-07-22 10:33:13,994 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 10:33:13,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2022-07-22 10:33:14,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528199034/4bd1d51c9cb04001a910cc2e0f61b032/FLAGd958d1332 [2022-07-22 10:33:14,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/528199034/4bd1d51c9cb04001a910cc2e0f61b032 [2022-07-22 10:33:14,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 10:33:14,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 10:33:14,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 10:33:14,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 10:33:14,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 10:33:14,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a56928b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14, skipping insertion in model container [2022-07-22 10:33:14,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 10:33:14,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 10:33:14,643 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/array-cav19/array_tiling_tcpy.c[408,421] [2022-07-22 10:33:14,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:33:14,670 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 10:33:14,683 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/array-cav19/array_tiling_tcpy.c[408,421] [2022-07-22 10:33:14,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:33:14,714 INFO L208 MainTranslator]: Completed translation [2022-07-22 10:33:14,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14 WrapperNode [2022-07-22 10:33:14,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 10:33:14,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 10:33:14,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 10:33:14,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 10:33:14,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,752 INFO L137 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2022-07-22 10:33:14,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 10:33:14,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 10:33:14,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 10:33:14,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 10:33:14,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 10:33:14,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 10:33:14,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 10:33:14,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 10:33:14,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (1/1) ... [2022-07-22 10:33:14,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:33:14,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:14,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 10:33:14,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 10:33:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 10:33:14,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 10:33:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 10:33:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 10:33:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 10:33:14,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 10:33:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 10:33:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 10:33:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 10:33:14,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 10:33:14,935 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 10:33:14,936 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 10:33:15,087 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 10:33:15,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 10:33:15,092 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 10:33:15,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:33:15 BoogieIcfgContainer [2022-07-22 10:33:15,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 10:33:15,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 10:33:15,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 10:33:15,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 10:33:15,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:33:14" (1/3) ... [2022-07-22 10:33:15,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6792377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:33:15, skipping insertion in model container [2022-07-22 10:33:15,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:33:14" (2/3) ... [2022-07-22 10:33:15,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6792377b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:33:15, skipping insertion in model container [2022-07-22 10:33:15,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:33:15" (3/3) ... [2022-07-22 10:33:15,105 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2022-07-22 10:33:15,119 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 10:33:15,123 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 10:33:15,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 10:33:15,212 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6145df7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e2feb38 [2022-07-22 10:33:15,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 10:33:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:15,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 10:33:15,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:15,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:15,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1700606493, now seen corresponding path program 1 times [2022-07-22 10:33:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:15,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589383948] [2022-07-22 10:33:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:33:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 10:33:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:33:15,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:15,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589383948] [2022-07-22 10:33:15,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589383948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:33:15,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:33:15,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 10:33:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891602656] [2022-07-22 10:33:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:33:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 10:33:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 10:33:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:33:15,442 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:15,460 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2022-07-22 10:33:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 10:33:15,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-22 10:33:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:15,469 INFO L225 Difference]: With dead ends: 41 [2022-07-22 10:33:15,470 INFO L226 Difference]: Without dead ends: 18 [2022-07-22 10:33:15,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:33:15,477 INFO L413 NwaCegarLoop]: 24 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, 24 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 [2022-07-22 10:33:15,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:33:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-22 10:33:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-22 10:33:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-07-22 10:33:15,516 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 18 [2022-07-22 10:33:15,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:15,517 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-07-22 10:33:15,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-07-22 10:33:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 10:33:15,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:15,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:15,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 10:33:15,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1364006487, now seen corresponding path program 1 times [2022-07-22 10:33:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:15,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826460382] [2022-07-22 10:33:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:33:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 10:33:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:33:15,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:15,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826460382] [2022-07-22 10:33:15,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826460382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:33:15,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:33:15,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 10:33:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790695027] [2022-07-22 10:33:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:33:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 10:33:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 10:33:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:33:15,767 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:33:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:15,819 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-07-22 10:33:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 10:33:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-22 10:33:15,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:15,822 INFO L225 Difference]: With dead ends: 34 [2022-07-22 10:33:15,823 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 10:33:15,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:33:15,830 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:15,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:33:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 10:33:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2022-07-22 10:33:15,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-22 10:33:15,841 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2022-07-22 10:33:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:15,843 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-22 10:33:15,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:33:15,846 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-07-22 10:33:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 10:33:15,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:15,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:15,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 10:33:15,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1804375691, now seen corresponding path program 1 times [2022-07-22 10:33:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:15,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817512162] [2022-07-22 10:33:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:15,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:33:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 10:33:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 10:33:15,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:15,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817512162] [2022-07-22 10:33:15,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817512162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:15,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659351289] [2022-07-22 10:33:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:15,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:15,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:15,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:15,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 10:33:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:16,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 10:33:16,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 10:33:16,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:33:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 10:33:16,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659351289] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:33:16,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:33:16,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-22 10:33:16,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476033744] [2022-07-22 10:33:16,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:33:16,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 10:33:16,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:16,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 10:33:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:33:16,280 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:16,351 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-07-22 10:33:16,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 10:33:16,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-07-22 10:33:16,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:16,353 INFO L225 Difference]: With dead ends: 41 [2022-07-22 10:33:16,353 INFO L226 Difference]: Without dead ends: 34 [2022-07-22 10:33:16,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-22 10:33:16,354 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:16,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:33:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-22 10:33:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 21. [2022-07-22 10:33:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:16,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-07-22 10:33:16,360 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2022-07-22 10:33:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:16,360 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-07-22 10:33:16,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:33:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-07-22 10:33:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-22 10:33:16,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:16,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:16,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 10:33:16,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:16,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1487835885, now seen corresponding path program 2 times [2022-07-22 10:33:16,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:16,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269618544] [2022-07-22 10:33:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:16,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:33:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 10:33:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:33:16,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269618544] [2022-07-22 10:33:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269618544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:16,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128120914] [2022-07-22 10:33:16,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:33:16,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:16,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:16,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:16,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 10:33:16,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:33:16,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:33:16,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 10:33:16,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:16,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:33:16,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:33:16,997 INFO L356 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2022-07-22 10:33:17,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2022-07-22 10:33:17,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:33:17,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:33:17,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:33:17,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 44 [2022-07-22 10:33:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:33:17,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:33:19,366 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:33:19,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36710 treesize of output 35054 [2022-07-22 10:33:19,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35046 treesize of output 33318