./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/copysome1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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-programs/copysome1-2.i -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 fba7b7c813943ca4d863bf010df4d3f1a074ecd1ac1791c737a4b5fb8e2d7ea1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 10:36:53,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 10:36:53,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 10:36:53,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 10:36:53,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 10:36:53,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 10:36:53,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 10:36:53,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 10:36:53,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 10:36:53,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 10:36:53,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 10:36:53,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 10:36:53,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 10:36:53,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 10:36:53,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 10:36:53,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 10:36:53,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 10:36:53,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 10:36:53,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 10:36:53,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 10:36:53,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 10:36:53,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 10:36:53,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 10:36:53,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 10:36:53,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 10:36:53,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 10:36:53,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 10:36:53,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 10:36:53,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 10:36:53,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 10:36:53,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 10:36:53,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 10:36:53,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 10:36:53,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 10:36:53,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 10:36:53,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 10:36:53,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 10:36:53,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 10:36:53,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 10:36:53,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 10:36:53,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 10:36:53,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 10:36:53,205 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 10:36:53,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 10:36:53,206 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 10:36:53,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 10:36:53,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 10:36:53,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 10:36:53,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 10:36:53,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 10:36:53,208 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 10:36:53,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 10:36:53,209 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 10:36:53,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 10:36:53,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 10:36:53,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 10:36:53,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 10:36:53,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 10:36:53,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 10:36:53,210 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 10:36:53,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 10:36:53,210 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 10:36:53,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 10:36:53,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 10:36:53,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 10:36:53,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 10:36:53,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 10:36:53,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 10:36:53,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 10:36:53,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 10:36:53,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 10:36:53,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 10:36:53,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 10:36:53,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 10:36:53,213 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 10:36:53,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 10:36:53,214 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 10:36:53,214 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fba7b7c813943ca4d863bf010df4d3f1a074ecd1ac1791c737a4b5fb8e2d7ea1 [2023-02-18 10:36:53,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 10:36:53,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 10:36:53,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 10:36:53,485 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 10:36:53,486 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 10:36:53,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/copysome1-2.i [2023-02-18 10:36:54,606 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 10:36:54,755 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 10:36:54,756 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome1-2.i [2023-02-18 10:36:54,761 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683d2a093/b88257d9bad545a99189618e1a65fcb4/FLAG11f32566d [2023-02-18 10:36:54,771 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/683d2a093/b88257d9bad545a99189618e1a65fcb4 [2023-02-18 10:36:54,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 10:36:54,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 10:36:54,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 10:36:54,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 10:36:54,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 10:36:54,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9e8558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54, skipping insertion in model container [2023-02-18 10:36:54,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 10:36:54,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 10:36:54,903 WARN L237 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-programs/copysome1-2.i[805,818] [2023-02-18 10:36:54,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 10:36:54,925 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 10:36:54,934 WARN L237 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-programs/copysome1-2.i[805,818] [2023-02-18 10:36:54,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 10:36:54,950 INFO L208 MainTranslator]: Completed translation [2023-02-18 10:36:54,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54 WrapperNode [2023-02-18 10:36:54,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 10:36:54,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 10:36:54,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 10:36:54,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 10:36:54,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,974 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-02-18 10:36:54,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 10:36:54,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 10:36:54,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 10:36:54,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 10:36:54,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:54,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 10:36:54,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 10:36:54,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 10:36:54,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 10:36:54,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (1/1) ... [2023-02-18 10:36:55,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 10:36:55,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:36:55,018 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) [2023-02-18 10:36:55,019 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 [2023-02-18 10:36:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 10:36:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 10:36:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 10:36:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 10:36:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 10:36:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 10:36:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 10:36:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 10:36:55,103 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 10:36:55,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 10:36:55,269 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 10:36:55,274 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 10:36:55,274 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 10:36:55,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:36:55 BoogieIcfgContainer [2023-02-18 10:36:55,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 10:36:55,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 10:36:55,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 10:36:55,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 10:36:55,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 10:36:54" (1/3) ... [2023-02-18 10:36:55,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c034426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:36:55, skipping insertion in model container [2023-02-18 10:36:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:36:54" (2/3) ... [2023-02-18 10:36:55,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c034426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:36:55, skipping insertion in model container [2023-02-18 10:36:55,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:36:55" (3/3) ... [2023-02-18 10:36:55,284 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome1-2.i [2023-02-18 10:36:55,298 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 10:36:55,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 10:36:55,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 10:36:55,340 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@754e8a3d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 10:36:55,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 10:36:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 10:36:55,347 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:36:55,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:36:55,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:36:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:36:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2060710478, now seen corresponding path program 1 times [2023-02-18 10:36:55,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:36:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215446509] [2023-02-18 10:36:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:36:55,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:36:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:36:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 10:36:55,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:36:55,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215446509] [2023-02-18 10:36:55,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215446509] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 10:36:55,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 10:36:55,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 10:36:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976982676] [2023-02-18 10:36:55,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 10:36:55,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 10:36:55,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:36:55,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 10:36:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 10:36:55,584 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:36:55,641 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2023-02-18 10:36:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 10:36:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 10:36:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:36:55,650 INFO L225 Difference]: With dead ends: 41 [2023-02-18 10:36:55,650 INFO L226 Difference]: Without dead ends: 21 [2023-02-18 10:36:55,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 10:36:55,656 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:36:55,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 32 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:36:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-18 10:36:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2023-02-18 10:36:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-18 10:36:55,684 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2023-02-18 10:36:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:36:55,685 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-18 10:36:55,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-02-18 10:36:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 10:36:55,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:36:55,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:36:55,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 10:36:55,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:36:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:36:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1458340319, now seen corresponding path program 1 times [2023-02-18 10:36:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:36:55,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107976896] [2023-02-18 10:36:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:36:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:36:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:36:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 10:36:55,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:36:55,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107976896] [2023-02-18 10:36:55,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107976896] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:36:55,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519384410] [2023-02-18 10:36:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:36:55,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:36:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:36:55,867 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) [2023-02-18 10:36:55,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 10:36:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:36:55,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 10:36:55,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:36:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 10:36:55,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:36:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 10:36:55,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519384410] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:36:55,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:36:55,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-18 10:36:55,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897517568] [2023-02-18 10:36:55,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:36:55,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 10:36:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:36:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 10:36:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-18 10:36:55,989 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:36:56,041 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2023-02-18 10:36:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 10:36:56,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 10:36:56,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:36:56,043 INFO L225 Difference]: With dead ends: 46 [2023-02-18 10:36:56,043 INFO L226 Difference]: Without dead ends: 33 [2023-02-18 10:36:56,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-18 10:36:56,044 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:36:56,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:36:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-18 10:36:56,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-18 10:36:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-18 10:36:56,050 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2023-02-18 10:36:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:36:56,051 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-18 10:36:56,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-18 10:36:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 10:36:56,052 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:36:56,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:36:56,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 10:36:56,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:36:56,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:36:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:36:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash -736833947, now seen corresponding path program 2 times [2023-02-18 10:36:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:36:56,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061133679] [2023-02-18 10:36:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:36:56,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:36:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:36:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 10:36:56,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:36:56,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061133679] [2023-02-18 10:36:56,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061133679] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:36:56,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071216869] [2023-02-18 10:36:56,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 10:36:56,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:36:56,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:36:56,489 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) [2023-02-18 10:36:56,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 10:36:56,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 10:36:56,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:36:56,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 10:36:56,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:36:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 10:36:56,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:36:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 10:36:56,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071216869] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:36:56,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:36:56,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-18 10:36:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097670003] [2023-02-18 10:36:56,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:36:56,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 10:36:56,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:36:56,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 10:36:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 10:36:56,669 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:36:56,764 INFO L93 Difference]: Finished difference Result 85 states and 116 transitions. [2023-02-18 10:36:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 10:36:56,765 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-18 10:36:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:36:56,766 INFO L225 Difference]: With dead ends: 85 [2023-02-18 10:36:56,766 INFO L226 Difference]: Without dead ends: 63 [2023-02-18 10:36:56,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-18 10:36:56,768 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:36:56,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 34 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:36:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-18 10:36:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-18 10:36:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2023-02-18 10:36:56,776 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 30 [2023-02-18 10:36:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:36:56,776 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2023-02-18 10:36:56,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:36:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2023-02-18 10:36:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 10:36:56,778 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:36:56,778 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:36:56,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 10:36:56,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-18 10:36:56,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:36:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:36:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash -967663183, now seen corresponding path program 3 times [2023-02-18 10:36:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:36:56,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558540353] [2023-02-18 10:36:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:36:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:36:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:36:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-18 10:36:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:36:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558540353] [2023-02-18 10:36:57,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558540353] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:36:57,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591978336] [2023-02-18 10:36:57,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 10:36:57,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:36:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:36:57,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:36:57,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 10:36:59,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 10:36:59,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:36:59,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 10:36:59,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:36:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-18 10:36:59,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:36:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-18 10:36:59,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591978336] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:36:59,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:36:59,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-18 10:36:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003150122] [2023-02-18 10:36:59,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:36:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 10:36:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:36:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 10:36:59,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-18 10:36:59,980 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:37:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:37:00,196 INFO L93 Difference]: Finished difference Result 163 states and 224 transitions. [2023-02-18 10:37:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 10:37:00,198 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-18 10:37:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:37:00,204 INFO L225 Difference]: With dead ends: 163 [2023-02-18 10:37:00,204 INFO L226 Difference]: Without dead ends: 123 [2023-02-18 10:37:00,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-02-18 10:37:00,207 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 105 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 10:37:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 54 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 10:37:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-18 10:37:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-02-18 10:37:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.2131147540983607) internal successors, (148), 122 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:37:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2023-02-18 10:37:00,225 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 60 [2023-02-18 10:37:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:37:00,226 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2023-02-18 10:37:00,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 25 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:37:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2023-02-18 10:37:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-18 10:37:00,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:37:00,229 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:37:00,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 10:37:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:37:00,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:37:00,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:37:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash -232988599, now seen corresponding path program 4 times [2023-02-18 10:37:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:37:00,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267818223] [2023-02-18 10:37:00,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:37:00,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:37:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:37:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-18 10:37:01,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:37:01,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267818223] [2023-02-18 10:37:01,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267818223] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:37:01,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43864004] [2023-02-18 10:37:01,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 10:37:01,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:37:01,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:37:01,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:37:01,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 10:37:01,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 10:37:01,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:37:01,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 10:37:01,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:37:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-18 10:37:02,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:37:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-02-18 10:37:02,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43864004] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:37:02,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:37:02,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-02-18 10:37:02,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886820142] [2023-02-18 10:37:02,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:37:02,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-18 10:37:02,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:37:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-18 10:37:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-18 10:37:02,829 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:37:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:37:03,275 INFO L93 Difference]: Finished difference Result 319 states and 440 transitions. [2023-02-18 10:37:03,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-18 10:37:03,276 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-02-18 10:37:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:37:03,277 INFO L225 Difference]: With dead ends: 319 [2023-02-18 10:37:03,277 INFO L226 Difference]: Without dead ends: 243 [2023-02-18 10:37:03,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 194 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-02-18 10:37:03,279 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 497 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 10:37:03,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 54 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 10:37:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-02-18 10:37:03,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-02-18 10:37:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.2066115702479339) internal successors, (292), 242 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:37:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2023-02-18 10:37:03,294 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 120 [2023-02-18 10:37:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:37:03,295 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2023-02-18 10:37:03,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.163265306122449) internal successors, (106), 49 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 10:37:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2023-02-18 10:37:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-02-18 10:37:03,300 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:37:03,301 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:37:03,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 10:37:03,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:37:03,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:37:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:37:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1469530759, now seen corresponding path program 5 times [2023-02-18 10:37:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:37:03,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473976702] [2023-02-18 10:37:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:37:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:37:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:37:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2023-02-18 10:37:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:37:06,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473976702] [2023-02-18 10:37:06,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473976702] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:37:06,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932528672] [2023-02-18 10:37:06,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 10:37:06,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:37:06,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:37:06,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:37:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process