./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/avg10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/reducercommutativity/avg10-2.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 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 22:12:53,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 22:12:53,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 22:12:53,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 22:12:53,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 22:12:53,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 22:12:53,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 22:12:53,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 22:12:53,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 22:12:53,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 22:12:53,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 22:12:53,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 22:12:53,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 22:12:53,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 22:12:53,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 22:12:53,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 22:12:53,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 22:12:53,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 22:12:53,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 22:12:53,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 22:12:53,103 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 22:12:53,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 22:12:53,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 22:12:53,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 22:12:53,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 22:12:53,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 22:12:53,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 22:12:53,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 22:12:53,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 22:12:53,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 22:12:53,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 22:12:53,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 22:12:53,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 22:12:53,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 22:12:53,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 22:12:53,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 22:12:53,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 22:12:53,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 22:12:53,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 22:12:53,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 22:12:53,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 22:12:53,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 22:12:53,127 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 22:12:53,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 22:12:53,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 22:12:53,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 22:12:53,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 22:12:53,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 22:12:53,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 22:12:53,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 22:12:53,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 22:12:53,164 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 22:12:53,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 22:12:53,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 22:12:53,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 22:12:53,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 22:12:53,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 22:12:53,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 22:12:53,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 22:12:53,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 22:12:53,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 22:12:53,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 22:12:53,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 22:12:53,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 22:12:53,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 22:12:53,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 22:12:53,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 22:12:53,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:12:53,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 22:12:53,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 22:12:53,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 22:12:53,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 22:12:53,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 22:12:53,171 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 22:12:53,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 22:12:53,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 22:12:53,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 431bc26901e3cf271c74e4f10a5bc241d4509dbbafd99aaf0126c46ffc8b7c33 [2022-07-11 22:12:53,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 22:12:53,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 22:12:53,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 22:12:53,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 22:12:53,474 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 22:12:53,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/avg10-2.i [2022-07-11 22:12:53,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a50e4bd0/d78d8fc1cb934151b4d7ad1f87bcc7ff/FLAG81647ae04 [2022-07-11 22:12:53,897 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 22:12:53,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/avg10-2.i [2022-07-11 22:12:53,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a50e4bd0/d78d8fc1cb934151b4d7ad1f87bcc7ff/FLAG81647ae04 [2022-07-11 22:12:53,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a50e4bd0/d78d8fc1cb934151b4d7ad1f87bcc7ff [2022-07-11 22:12:53,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 22:12:53,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 22:12:53,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 22:12:53,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 22:12:53,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 22:12:53,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:12:53" (1/1) ... [2022-07-11 22:12:53,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce2e5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:53, skipping insertion in model container [2022-07-11 22:12:53,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:12:53" (1/1) ... [2022-07-11 22:12:53,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 22:12:53,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 22:12:54,137 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/reducercommutativity/avg10-2.i[1282,1295] [2022-07-11 22:12:54,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:12:54,147 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 22:12:54,180 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/reducercommutativity/avg10-2.i[1282,1295] [2022-07-11 22:12:54,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:12:54,193 INFO L208 MainTranslator]: Completed translation [2022-07-11 22:12:54,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54 WrapperNode [2022-07-11 22:12:54,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 22:12:54,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 22:12:54,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 22:12:54,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 22:12:54,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,232 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-07-11 22:12:54,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 22:12:54,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 22:12:54,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 22:12:54,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 22:12:54,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 22:12:54,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 22:12:54,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 22:12:54,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 22:12:54,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (1/1) ... [2022-07-11 22:12:54,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:12:54,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:54,309 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) [2022-07-11 22:12:54,331 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 [2022-07-11 22:12:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 22:12:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 22:12:54,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 22:12:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 22:12:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2022-07-11 22:12:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2022-07-11 22:12:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 22:12:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 22:12:54,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 22:12:54,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 22:12:54,427 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 22:12:54,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 22:12:54,581 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 22:12:54,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 22:12:54,586 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 22:12:54,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:12:54 BoogieIcfgContainer [2022-07-11 22:12:54,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 22:12:54,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 22:12:54,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 22:12:54,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 22:12:54,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 10:12:53" (1/3) ... [2022-07-11 22:12:54,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5481b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:12:54, skipping insertion in model container [2022-07-11 22:12:54,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:12:54" (2/3) ... [2022-07-11 22:12:54,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5481b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:12:54, skipping insertion in model container [2022-07-11 22:12:54,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:12:54" (3/3) ... [2022-07-11 22:12:54,596 INFO L111 eAbstractionObserver]: Analyzing ICFG avg10-2.i [2022-07-11 22:12:54,608 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 22:12:54,623 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 22:12:54,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 22:12:54,695 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@4fa5f68f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b5b219f [2022-07-11 22:12:54,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 22:12:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-11 22:12:54,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:54,726 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:54,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2001158789, now seen corresponding path program 1 times [2022-07-11 22:12:54,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:54,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790108545] [2022-07-11 22:12:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:54,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-11 22:12:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 22:12:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:54,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-11 22:12:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-11 22:12:55,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:55,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790108545] [2022-07-11 22:12:55,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790108545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138267185] [2022-07-11 22:12:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:55,028 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) [2022-07-11 22:12:55,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 22:12:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 22:12:55,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:12:55,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:12:55,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138267185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:12:55,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 22:12:55,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-11 22:12:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394221934] [2022-07-11 22:12:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:12:55,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 22:12:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 22:12:55,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:12:55,173 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 22:12:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:55,197 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-07-11 22:12:55,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 22:12:55,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-07-11 22:12:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:55,205 INFO L225 Difference]: With dead ends: 50 [2022-07-11 22:12:55,206 INFO L226 Difference]: Without dead ends: 24 [2022-07-11 22:12:55,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:12:55,212 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:55,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-11 22:12:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-07-11 22:12:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-11 22:12:55,243 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2022-07-11 22:12:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:55,244 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-11 22:12:55,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 22:12:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-11 22:12:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-11 22:12:55,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:55,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:55,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:55,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-11 22:12:55,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:55,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash 202333565, now seen corresponding path program 1 times [2022-07-11 22:12:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:55,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859288020] [2022-07-11 22:12:55,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-11 22:12:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-11 22:12:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 22:12:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-11 22:12:55,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:55,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859288020] [2022-07-11 22:12:55,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859288020] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:55,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426158572] [2022-07-11 22:12:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:55,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:55,567 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) [2022-07-11 22:12:55,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 22:12:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 22:12:55,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 22:12:55,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:12:55,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426158572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:12:55,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 22:12:55,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-11 22:12:55,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282783759] [2022-07-11 22:12:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:12:55,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 22:12:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:55,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 22:12:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:12:55,656 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 22:12:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:55,668 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-07-11 22:12:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 22:12:55,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-07-11 22:12:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:55,670 INFO L225 Difference]: With dead ends: 42 [2022-07-11 22:12:55,670 INFO L226 Difference]: Without dead ends: 25 [2022-07-11 22:12:55,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:12:55,674 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:55,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-11 22:12:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-07-11 22:12:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-11 22:12:55,679 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2022-07-11 22:12:55,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:55,679 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-11 22:12:55,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 22:12:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-11 22:12:55,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-11 22:12:55,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:55,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:55,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:55,881 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,SelfDestructingSolverStorable1 [2022-07-11 22:12:55,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:55,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash -796008709, now seen corresponding path program 1 times [2022-07-11 22:12:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:55,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128441767] [2022-07-11 22:12:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-11 22:12:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-11 22:12:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 22:12:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-11 22:12:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:56,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128441767] [2022-07-11 22:12:56,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128441767] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:56,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525145820] [2022-07-11 22:12:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:56,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:56,040 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) [2022-07-11 22:12:56,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 22:12:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 22:12:56,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-11 22:12:56,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:12:56,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525145820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:12:56,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 22:12:56,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-11 22:12:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852463727] [2022-07-11 22:12:56,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:12:56,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 22:12:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 22:12:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-11 22:12:56,156 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 22:12:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:56,170 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-07-11 22:12:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 22:12:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-11 22:12:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:56,174 INFO L225 Difference]: With dead ends: 39 [2022-07-11 22:12:56,174 INFO L226 Difference]: Without dead ends: 26 [2022-07-11 22:12:56,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-11 22:12:56,176 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:56,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:56,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-11 22:12:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-11 22:12:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-07-11 22:12:56,181 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2022-07-11 22:12:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:56,183 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-07-11 22:12:56,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 22:12:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-07-11 22:12:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-11 22:12:56,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:56,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:56,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-11 22:12:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:56,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash 165229081, now seen corresponding path program 1 times [2022-07-11 22:12:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:56,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71710242] [2022-07-11 22:12:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-11 22:12:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-11 22:12:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-11 22:12:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 22:12:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:56,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71710242] [2022-07-11 22:12:56,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71710242] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:56,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085230592] [2022-07-11 22:12:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:56,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:56,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:56,484 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) [2022-07-11 22:12:56,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 22:12:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:56,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-11 22:12:56,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-11 22:12:56,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:12:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-11 22:12:56,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085230592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:12:56,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:12:56,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-07-11 22:12:56,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511825066] [2022-07-11 22:12:56,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:12:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 22:12:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:56,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 22:12:56,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-11 22:12:56,623 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-11 22:12:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:56,672 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-07-11 22:12:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:12:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2022-07-11 22:12:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:56,675 INFO L225 Difference]: With dead ends: 54 [2022-07-11 22:12:56,676 INFO L226 Difference]: Without dead ends: 34 [2022-07-11 22:12:56,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-11 22:12:56,678 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:56,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-11 22:12:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-11 22:12:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-07-11 22:12:56,694 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2022-07-11 22:12:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:56,695 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-07-11 22:12:56,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-11 22:12:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-07-11 22:12:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-11 22:12:56,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:56,698 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:56,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:56,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:56,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1299679203, now seen corresponding path program 2 times [2022-07-11 22:12:56,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922038974] [2022-07-11 22:12:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-11 22:12:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-11 22:12:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-11 22:12:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-11 22:12:57,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:57,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922038974] [2022-07-11 22:12:57,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922038974] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412661647] [2022-07-11 22:12:57,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:12:57,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:57,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:57,076 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) [2022-07-11 22:12:57,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 22:12:57,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:12:57,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:12:57,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 22:12:57,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-11 22:12:57,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:12:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-11 22:12:57,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412661647] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:12:57,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:12:57,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-07-11 22:12:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556073263] [2022-07-11 22:12:57,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:12:57,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 22:12:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 22:12:57,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-11 22:12:57,352 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-11 22:12:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:57,405 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2022-07-11 22:12:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-11 22:12:57,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-07-11 22:12:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:57,407 INFO L225 Difference]: With dead ends: 70 [2022-07-11 22:12:57,408 INFO L226 Difference]: Without dead ends: 48 [2022-07-11 22:12:57,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-11 22:12:57,409 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:57,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:57,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-11 22:12:57,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-07-11 22:12:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-07-11 22:12:57,416 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2022-07-11 22:12:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:57,416 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-07-11 22:12:57,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-11 22:12:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-07-11 22:12:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-11 22:12:57,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:57,418 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:57,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:57,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:57,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:57,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash 936210247, now seen corresponding path program 3 times [2022-07-11 22:12:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:57,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088328562] [2022-07-11 22:12:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:57,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-11 22:12:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-11 22:12:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-11 22:12:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-11 22:12:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:57,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088328562] [2022-07-11 22:12:57,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088328562] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:57,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899423188] [2022-07-11 22:12:57,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:12:57,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:57,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:12:57,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 22:12:57,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-11 22:12:57,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:12:57,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 22:12:57,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-11 22:12:57,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:12:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-11 22:12:57,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899423188] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:12:57,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:12:57,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-07-11 22:12:57,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645067908] [2022-07-11 22:12:57,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:12:57,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 22:12:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:57,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 22:12:57,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-11 22:12:57,904 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-11 22:12:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:57,933 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-07-11 22:12:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:12:57,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2022-07-11 22:12:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:57,938 INFO L225 Difference]: With dead ends: 78 [2022-07-11 22:12:57,939 INFO L226 Difference]: Without dead ends: 55 [2022-07-11 22:12:57,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-11 22:12:57,940 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:57,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-11 22:12:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-07-11 22:12:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-07-11 22:12:57,955 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2022-07-11 22:12:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:57,955 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-07-11 22:12:57,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-11 22:12:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-07-11 22:12:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-11 22:12:57,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:57,959 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:57,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:58,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:58,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:58,176 INFO L85 PathProgramCache]: Analyzing trace with hash 571451455, now seen corresponding path program 4 times [2022-07-11 22:12:58,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:58,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057324821] [2022-07-11 22:12:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:58,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-11 22:12:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-11 22:12:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-11 22:12:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-11 22:12:58,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057324821] [2022-07-11 22:12:58,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057324821] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874305220] [2022-07-11 22:12:58,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:12:58,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:58,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:58,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:12:58,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 22:12:58,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:12:58,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:12:58,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 22:12:58,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-11 22:12:58,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:12:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-11 22:12:58,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874305220] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:12:58,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:12:58,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-11 22:12:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619725005] [2022-07-11 22:12:58,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:12:58,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 22:12:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 22:12:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:12:58,513 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 22:12:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:58,540 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2022-07-11 22:12:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 22:12:58,541 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2022-07-11 22:12:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:58,542 INFO L225 Difference]: With dead ends: 94 [2022-07-11 22:12:58,542 INFO L226 Difference]: Without dead ends: 63 [2022-07-11 22:12:58,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:12:58,543 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:58,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:58,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-11 22:12:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-11 22:12:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-07-11 22:12:58,549 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 88 [2022-07-11 22:12:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:58,550 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-07-11 22:12:58,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-11 22:12:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-07-11 22:12:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-11 22:12:58,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:58,552 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:58,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:58,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2026866377, now seen corresponding path program 5 times [2022-07-11 22:12:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085751607] [2022-07-11 22:12:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-11 22:12:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-11 22:12:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-11 22:12:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-07-11 22:12:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:58,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085751607] [2022-07-11 22:12:58,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085751607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:58,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030078319] [2022-07-11 22:12:58,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 22:12:58,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:58,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:12:58,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-11 22:12:59,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-07-11 22:12:59,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:12:59,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 22:12:59,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:12:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 450 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-07-11 22:12:59,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:12:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-07-11 22:12:59,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030078319] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:12:59,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:12:59,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-11 22:12:59,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576802080] [2022-07-11 22:12:59,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:12:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 22:12:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:12:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 22:12:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-11 22:12:59,318 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 22:12:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:12:59,339 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-07-11 22:12:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:12:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-07-11 22:12:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:12:59,341 INFO L225 Difference]: With dead ends: 102 [2022-07-11 22:12:59,341 INFO L226 Difference]: Without dead ends: 71 [2022-07-11 22:12:59,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-11 22:12:59,342 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:12:59,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:12:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-11 22:12:59,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-11 22:12:59,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:12:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2022-07-11 22:12:59,348 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 112 [2022-07-11 22:12:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:12:59,348 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2022-07-11 22:12:59,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 22:12:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2022-07-11 22:12:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-11 22:12:59,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:12:59,350 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:12:59,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-11 22:12:59,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-11 22:12:59,572 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:12:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:12:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2045037743, now seen corresponding path program 6 times [2022-07-11 22:12:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:12:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193898221] [2022-07-11 22:12:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:12:59,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:12:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-11 22:12:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-11 22:12:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:59,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-11 22:12:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:12:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-07-11 22:12:59,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:12:59,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193898221] [2022-07-11 22:12:59,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193898221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:12:59,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486263133] [2022-07-11 22:12:59,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-11 22:12:59,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:12:59,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:12:59,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:12:59,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-11 22:13:00,081 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-07-11 22:13:00,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:13:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 22:13:00,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:13:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 450 proven. 36 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-07-11 22:13:00,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:13:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-07-11 22:13:00,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486263133] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:13:00,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:13:00,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-11 22:13:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600199677] [2022-07-11 22:13:00,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:13:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 22:13:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:13:00,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 22:13:00,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:13:00,186 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 22:13:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:13:00,216 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-07-11 22:13:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 22:13:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2022-07-11 22:13:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:13:00,219 INFO L225 Difference]: With dead ends: 108 [2022-07-11 22:13:00,219 INFO L226 Difference]: Without dead ends: 77 [2022-07-11 22:13:00,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:13:00,222 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:13:00,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:13:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-11 22:13:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-07-11 22:13:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 22:13:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2022-07-11 22:13:00,237 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2022-07-11 22:13:00,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:13:00,237 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2022-07-11 22:13:00,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-11 22:13:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2022-07-11 22:13:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-11 22:13:00,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:13:00,239 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:13:00,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-11 22:13:00,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:13:00,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:13:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:13:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1529370487, now seen corresponding path program 7 times [2022-07-11 22:13:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:13:00,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396711229] [2022-07-11 22:13:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:13:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:13:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:13:20,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-11 22:13:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:13:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-11 22:13:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:13:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-11 22:13:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:13:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 30 proven. 1092 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-11 22:13:30,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:13:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396711229] [2022-07-11 22:13:30,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396711229] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:13:30,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118750031] [2022-07-11 22:13:30,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-11 22:13:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:13:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:13:30,683 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 22:13:30,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-11 22:13:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:13:30,830 WARN L261 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 260 conjunts are in the unsatisfiable core [2022-07-11 22:13:30,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:13:32,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-11 22:15:00,646 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 235 DAG size of output: 186 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-11 22:16:08,708 WARN L233 SmtUtils]: Spent 13.24s on a formula simplification that was a NOOP. DAG size: 188 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-11 22:16:08,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:16:08,822 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:16:08,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 4491 treesize of output 1595 [2022-07-11 22:17:07,386 WARN L233 SmtUtils]: Spent 19.31s on a formula simplification that was a NOOP. DAG size: 188 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)