./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-simple/dll2n_append_unequal.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 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:51:58,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:51:58,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:51:58,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:51:58,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:51:58,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:51:58,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:51:58,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:51:58,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:51:58,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:51:58,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:51:58,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:51:58,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:51:58,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:51:58,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:51:58,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:51:58,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:51:58,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:51:58,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:51:58,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:51:58,114 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:51:58,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:51:58,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:51:58,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:51:58,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:51:58,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:51:58,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:51:58,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:51:58,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:51:58,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:51:58,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:51:58,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:51:58,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:51:58,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:51:58,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:51:58,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:51:58,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:51:58,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:51:58,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:51:58,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:51:58,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:51:58,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:51:58,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:51:58,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:51:58,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:51:58,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:51:58,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:51:58,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:51:58,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:51:58,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:51:58,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:51:58,173 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:51:58,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:51:58,173 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:51:58,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:51:58,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:51:58,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:51:58,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:51:58,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:51:58,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:51:58,175 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:51:58,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:51:58,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:51:58,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:51:58,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:51:58,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:51:58,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:51:58,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:51:58,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:51:58,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:51:58,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:51:58,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:51:58,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:51:58,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:51:58,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:51:58,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:51:58,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2022-07-22 14:51:58,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:51:58,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:51:58,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:51:58,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:51:58,389 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:51:58,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2022-07-22 14:51:58,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd5ebfeb/1a6fc37f53f2454b8d815b265b989828/FLAG52fc69ec0 [2022-07-22 14:51:58,842 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:51:58,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2022-07-22 14:51:58,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd5ebfeb/1a6fc37f53f2454b8d815b265b989828/FLAG52fc69ec0 [2022-07-22 14:51:58,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd5ebfeb/1a6fc37f53f2454b8d815b265b989828 [2022-07-22 14:51:58,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:51:58,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:51:58,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:51:58,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:51:58,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:51:58,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:51:58" (1/1) ... [2022-07-22 14:51:58,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54067d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:58, skipping insertion in model container [2022-07-22 14:51:58,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:51:58" (1/1) ... [2022-07-22 14:51:58,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:51:58,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:51:59,232 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/list-simple/dll2n_append_unequal.i[24457,24470] [2022-07-22 14:51:59,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:51:59,244 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:51:59,272 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/list-simple/dll2n_append_unequal.i[24457,24470] [2022-07-22 14:51:59,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:51:59,289 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:51:59,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59 WrapperNode [2022-07-22 14:51:59,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:51:59,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:51:59,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:51:59,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:51:59,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,353 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2022-07-22 14:51:59,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:51:59,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:51:59,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:51:59,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:51:59,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:51:59,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:51:59,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:51:59,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:51:59,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (1/1) ... [2022-07-22 14:51:59,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:51:59,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:51:59,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 14:51:59,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 14:51:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 14:51:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 14:51:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-07-22 14:51:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-07-22 14:51:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 14:51:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:51:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:51:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:51:59,511 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:51:59,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:51:59,667 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:51:59,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:51:59,672 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 14:51:59,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:51:59 BoogieIcfgContainer [2022-07-22 14:51:59,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:51:59,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:51:59,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:51:59,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:51:59,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:51:58" (1/3) ... [2022-07-22 14:51:59,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54813b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:51:59, skipping insertion in model container [2022-07-22 14:51:59,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:51:59" (2/3) ... [2022-07-22 14:51:59,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54813b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:51:59, skipping insertion in model container [2022-07-22 14:51:59,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:51:59" (3/3) ... [2022-07-22 14:51:59,687 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2022-07-22 14:51:59,696 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:51:59,696 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:51:59,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:51:59,729 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@271516d2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3083f83b [2022-07-22 14:51:59,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:51:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 14:51:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 14:51:59,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:51:59,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:51:59,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:51:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:51:59,741 INFO L85 PathProgramCache]: Analyzing trace with hash -346371136, now seen corresponding path program 1 times [2022-07-22 14:51:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:51:59,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258516123] [2022-07-22 14:51:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:51:59,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:51:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:51:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:51:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:51:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:51:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:51:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258516123] [2022-07-22 14:51:59,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258516123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:51:59,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:51:59,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 14:51:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218209506] [2022-07-22 14:51:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:51:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:51:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:51:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:51:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:51:59,917 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:51:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:51:59,960 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2022-07-22 14:51:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:51:59,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-22 14:51:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:51:59,966 INFO L225 Difference]: With dead ends: 65 [2022-07-22 14:51:59,966 INFO L226 Difference]: Without dead ends: 30 [2022-07-22 14:51:59,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:51:59,972 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:51:59,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:51:59,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-22 14:51:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-22 14:52:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 14:52:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-07-22 14:52:00,002 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2022-07-22 14:52:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:00,002 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-07-22 14:52:00,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:52:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-07-22 14:52:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 14:52:00,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:00,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:52:00,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1530291827, now seen corresponding path program 1 times [2022-07-22 14:52:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:00,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132364765] [2022-07-22 14:52:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 14:52:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:52:00,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:00,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132364765] [2022-07-22 14:52:00,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132364765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:52:00,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:52:00,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 14:52:00,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422236050] [2022-07-22 14:52:00,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:52:00,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 14:52:00,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 14:52:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:52:00,077 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:52:00,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:00,109 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-07-22 14:52:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 14:52:00,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-22 14:52:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:00,110 INFO L225 Difference]: With dead ends: 58 [2022-07-22 14:52:00,110 INFO L226 Difference]: Without dead ends: 35 [2022-07-22 14:52:00,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:52:00,112 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:00,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 86 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:52:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-22 14:52:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-07-22 14:52:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 14:52:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-07-22 14:52:00,117 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2022-07-22 14:52:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:00,117 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-07-22 14:52:00,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 14:52:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-07-22 14:52:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 14:52:00,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:00,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:00,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 14:52:00,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash 878865159, now seen corresponding path program 1 times [2022-07-22 14:52:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147065785] [2022-07-22 14:52:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 14:52:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 14:52:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:00,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147065785] [2022-07-22 14:52:00,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147065785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:52:00,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:52:00,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 14:52:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350865742] [2022-07-22 14:52:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:52:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 14:52:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 14:52:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:52:00,210 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 14:52:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:00,255 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2022-07-22 14:52:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 14:52:00,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-07-22 14:52:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:00,256 INFO L225 Difference]: With dead ends: 63 [2022-07-22 14:52:00,257 INFO L226 Difference]: Without dead ends: 35 [2022-07-22 14:52:00,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 14:52:00,260 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:00,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 85 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:52:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-22 14:52:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-07-22 14:52:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) [2022-07-22 14:52:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-07-22 14:52:00,265 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 27 [2022-07-22 14:52:00,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:00,266 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-07-22 14:52:00,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 14:52:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-07-22 14:52:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 14:52:00,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:00,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:00,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 14:52:00,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -709482743, now seen corresponding path program 1 times [2022-07-22 14:52:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732200222] [2022-07-22 14:52:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 14:52:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 14:52:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732200222] [2022-07-22 14:52:00,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732200222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415918406] [2022-07-22 14:52:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:00,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:00,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:52:00,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 14:52:00,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 14:52:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:00,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 14:52:00,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:52:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:52:00,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:52:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 14:52:00,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415918406] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:52:00,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 14:52:00,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2022-07-22 14:52:00,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107131632] [2022-07-22 14:52:00,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 14:52:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:52:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:52:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:52:00,635 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-22 14:52:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:00,686 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2022-07-22 14:52:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 14:52:00,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2022-07-22 14:52:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:00,688 INFO L225 Difference]: With dead ends: 59 [2022-07-22 14:52:00,688 INFO L226 Difference]: Without dead ends: 36 [2022-07-22 14:52:00,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:52:00,689 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:00,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:52:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-22 14:52:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-22 14:52:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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) [2022-07-22 14:52:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-07-22 14:52:00,693 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2022-07-22 14:52:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:00,693 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-07-22 14:52:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-22 14:52:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-07-22 14:52:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 14:52:00,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:00,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:00,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 14:52:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:00,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:00,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1607276515, now seen corresponding path program 1 times [2022-07-22 14:52:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:00,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186230102] [2022-07-22 14:52:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:00,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 14:52:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 14:52:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 14:52:01,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:01,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186230102] [2022-07-22 14:52:01,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186230102] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:01,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522845783] [2022-07-22 14:52:01,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:01,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:01,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:52:01,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 14:52:01,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 14:52:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 14:52:01,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:52:01,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-22 14:52:01,633 WARN L855 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (exists ((v_ArrVal_520 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_520) |c_#memory_$Pointer$.base|)))) is different from true [2022-07-22 14:52:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:01,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-22 14:52:01,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-07-22 14:52:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2022-07-22 14:52:01,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:52:01,794 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_523 (Array Int Int)) (|v_node_create_~temp~0#1.base_13| Int)) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_13| v_ArrVal_523) |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|))) (or (<= (+ .cse0 1) 0) (<= 1 .cse0) (not (< |v_node_create_~temp~0#1.base_13| |c_#StackHeapBarrier|))))) is different from false [2022-07-22 14:52:01,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522845783] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:01,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:52:01,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2022-07-22 14:52:01,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217015368] [2022-07-22 14:52:01,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:52:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 14:52:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 14:52:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=525, Unknown=2, NotChecked=94, Total=702 [2022-07-22 14:52:01,798 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-22 14:52:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:02,056 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-07-22 14:52:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 14:52:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2022-07-22 14:52:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:02,057 INFO L225 Difference]: With dead ends: 46 [2022-07-22 14:52:02,057 INFO L226 Difference]: Without dead ends: 36 [2022-07-22 14:52:02,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=856, Unknown=2, NotChecked=122, Total=1122 [2022-07-22 14:52:02,059 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:02,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 192 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-07-22 14:52:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-22 14:52:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-22 14:52:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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) [2022-07-22 14:52:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-07-22 14:52:02,064 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 37 [2022-07-22 14:52:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:02,064 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-07-22 14:52:02,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-22 14:52:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-07-22 14:52:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 14:52:02,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:02,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:02,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 14:52:02,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:02,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:02,284 INFO L85 PathProgramCache]: Analyzing trace with hash -859241559, now seen corresponding path program 1 times [2022-07-22 14:52:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:02,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052827724] [2022-07-22 14:52:02,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:02,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 14:52:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 14:52:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 14:52:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:02,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052827724] [2022-07-22 14:52:02,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052827724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:02,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815313911] [2022-07-22 14:52:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:02,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:02,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:52:02,836 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) [2022-07-22 14:52:02,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 14:52:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:03,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-22 14:52:03,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:52:03,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 [2022-07-22 14:52:03,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:52:03,136 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-22 14:52:03,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-22 14:52:03,250 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 14:52:03,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 14:52:03,339 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-22 14:52:03,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-07-22 14:52:03,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 14:52:03,458 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-22 14:52:03,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-07-22 14:52:03,707 INFO L356 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-07-22 14:52:03,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 30 [2022-07-22 14:52:03,713 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 14:52:03,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2022-07-22 14:52:03,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:03,847 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-07-22 14:52:03,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 79 [2022-07-22 14:52:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:03,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 64 [2022-07-22 14:52:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:03,867 INFO L356 Elim1Store]: treesize reduction 30, result has 47.4 percent of original size [2022-07-22 14:52:03,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 39 [2022-07-22 14:52:04,110 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-07-22 14:52:04,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 69 [2022-07-22 14:52:04,140 INFO L356 Elim1Store]: treesize reduction 126, result has 14.3 percent of original size [2022-07-22 14:52:04,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 66 [2022-07-22 14:52:04,165 INFO L356 Elim1Store]: treesize reduction 62, result has 24.4 percent of original size [2022-07-22 14:52:04,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 120 [2022-07-22 14:52:04,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:04,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2022-07-22 14:52:04,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-07-22 14:52:04,218 INFO L356 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-07-22 14:52:04,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 23 [2022-07-22 14:52:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 14:52:04,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:52:06,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815313911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:06,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:52:06,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 46 [2022-07-22 14:52:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027917088] [2022-07-22 14:52:06,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:52:06,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 14:52:06,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 14:52:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2452, Unknown=14, NotChecked=0, Total=2652 [2022-07-22 14:52:06,516 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 46 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 38 states have internal predecessors, (65), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:52:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:07,668 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2022-07-22 14:52:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 14:52:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 38 states have internal predecessors, (65), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-07-22 14:52:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:07,670 INFO L225 Difference]: With dead ends: 67 [2022-07-22 14:52:07,670 INFO L226 Difference]: Without dead ends: 39 [2022-07-22 14:52:07,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=356, Invalid=4052, Unknown=14, NotChecked=0, Total=4422 [2022-07-22 14:52:07,673 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:07,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 424 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 679 Invalid, 0 Unknown, 10 Unchecked, 0.4s Time] [2022-07-22 14:52:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-22 14:52:07,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-07-22 14:52:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 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) [2022-07-22 14:52:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-07-22 14:52:07,677 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 40 [2022-07-22 14:52:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:07,677 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-07-22 14:52:07,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 38 states have internal predecessors, (65), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:52:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-07-22 14:52:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 14:52:07,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:07,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:07,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 14:52:07,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:07,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:07,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1146227584, now seen corresponding path program 1 times [2022-07-22 14:52:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:07,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130152810] [2022-07-22 14:52:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:07,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 14:52:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 14:52:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 14:52:09,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130152810] [2022-07-22 14:52:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130152810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815728723] [2022-07-22 14:52:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:09,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:09,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:52:09,179 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) [2022-07-22 14:52:09,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 14:52:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:09,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 143 conjunts are in the unsatisfiable core [2022-07-22 14:52:09,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:52:09,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 [2022-07-22 14:52:09,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:52:09,994 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 14:52:09,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 14:52:10,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 14:52:10,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:10,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 14:52:10,152 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-22 14:52:10,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 52 [2022-07-22 14:52:10,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-22 14:52:10,478 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 14:52:10,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 35 [2022-07-22 14:52:10,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 14:52:10,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 14:52:10,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 14:52:10,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:10,675 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-07-22 14:52:10,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 72 [2022-07-22 14:52:10,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:10,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-22 14:52:10,694 INFO L356 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-07-22 14:52:10,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-07-22 14:52:10,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:10,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:11,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:52:11,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:11,379 INFO L356 Elim1Store]: treesize reduction 153, result has 15.5 percent of original size [2022-07-22 14:52:11,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 212 treesize of output 110 [2022-07-22 14:52:11,404 INFO L356 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-07-22 14:52:11,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 276 treesize of output 167 [2022-07-22 14:52:11,415 INFO L356 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-07-22 14:52:11,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 163 [2022-07-22 14:52:11,434 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-07-22 14:52:11,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 185 treesize of output 182 [2022-07-22 14:52:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:11,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 59 [2022-07-22 14:52:11,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:52:11,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:11,589 INFO L356 Elim1Store]: treesize reduction 49, result has 5.8 percent of original size [2022-07-22 14:52:11,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 173 treesize of output 60 [2022-07-22 14:52:11,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:11,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-07-22 14:52:11,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 14:52:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:52:11,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:52:11,721 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1036 (Array Int Int)) (v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_1036) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1038) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.offset|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1033) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-07-22 14:52:12,025 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1036 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_10| Int) (v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4)))) (let ((.cse0 (select |c_#memory_$Pointer$.base| .cse2)) (.cse1 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_10| 4))) (or (not (= (select .cse0 .cse1) 0)) (= (select (select (store (store |c_#memory_int| .cse2 v_ArrVal_1036) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1038) (select (select (store (store |c_#memory_$Pointer$.base| .cse2 (store .cse0 .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.offset|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1033) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|))))) is different from false [2022-07-22 14:52:12,046 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1036 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_10| Int) (v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)))) (let ((.cse1 (select |c_#memory_$Pointer$.base| .cse0)) (.cse2 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_10| 4))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (store |c_#memory_int| .cse0 v_ArrVal_1036) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1038) (select (select (store (store |c_#memory_$Pointer$.base| .cse0 (store .cse1 .cse2 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse2 |c_ULTIMATE.start_dll_append_~new_last~0#1.offset|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1033) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (not (= (select .cse1 .cse2) 0)))))) is different from false [2022-07-22 14:52:12,057 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1036 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_10| Int) (v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)))) (let ((.cse1 (select |c_#memory_$Pointer$.base| .cse0)) (.cse2 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_10| 4))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store (store |c_#memory_int| .cse0 v_ArrVal_1036) |c_ULTIMATE.start_dll_append_#t~ret7#1.base| v_ArrVal_1038) (select (select (store (store |c_#memory_$Pointer$.base| .cse0 (store .cse1 .cse2 |c_ULTIMATE.start_dll_append_#t~ret7#1.base|)) |c_ULTIMATE.start_dll_append_#t~ret7#1.base| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse2 |c_ULTIMATE.start_dll_append_#t~ret7#1.offset|)) |c_ULTIMATE.start_dll_append_#t~ret7#1.base| v_ArrVal_1033) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (not (= (select .cse1 .cse2) 0)))))) is different from false [2022-07-22 14:52:12,138 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| Int) (v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1036 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_10| Int) (v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1053 (Array Int Int)) (v_ArrVal_1031 (Array Int Int)) (v_ArrVal_1052 (Array Int Int)) (v_ArrVal_1051 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1052)) (.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1051))) (let ((.cse0 (select (select .cse1 (select (select .cse1 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select .cse4 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)))) (let ((.cse2 (select .cse1 .cse0)) (.cse3 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_10| 4))) (or (= (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1053) .cse0 v_ArrVal_1036) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1038) (select (select (store (store .cse1 .cse0 (store .cse2 .cse3 |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16|)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store .cse4 .cse0 (store (select .cse4 .cse0) .cse3 0)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1033) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16|) 0)) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| |c_#StackHeapBarrier|)) (not (= (select .cse2 .cse3) 0))))))) is different from false [2022-07-22 14:52:12,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815728723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:12,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:52:12,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 54 [2022-07-22 14:52:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796601014] [2022-07-22 14:52:12,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:52:12,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-22 14:52:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-22 14:52:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2913, Unknown=6, NotChecked=560, Total=3660 [2022-07-22 14:52:12,142 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 54 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 45 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:52:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:14,272 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-07-22 14:52:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 14:52:14,299 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 45 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2022-07-22 14:52:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:14,302 INFO L225 Difference]: With dead ends: 54 [2022-07-22 14:52:14,303 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 14:52:14,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=382, Invalid=5182, Unknown=6, NotChecked=750, Total=6320 [2022-07-22 14:52:14,305 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:14,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 452 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 961 Invalid, 0 Unknown, 61 Unchecked, 0.6s Time] [2022-07-22 14:52:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 14:52:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2022-07-22 14:52:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 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) [2022-07-22 14:52:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2022-07-22 14:52:14,325 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 44 [2022-07-22 14:52:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:14,326 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2022-07-22 14:52:14,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 45 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:52:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-07-22 14:52:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 14:52:14,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:14,329 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:14,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 14:52:14,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:14,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1173262244, now seen corresponding path program 1 times [2022-07-22 14:52:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:14,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089986245] [2022-07-22 14:52:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:14,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 14:52:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 14:52:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 14:52:14,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:14,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089986245] [2022-07-22 14:52:14,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089986245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:52:14,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:52:14,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 14:52:14,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493791936] [2022-07-22 14:52:14,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:52:14,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:52:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:14,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:52:14,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:52:14,628 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 14:52:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:14,676 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-07-22 14:52:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:52:14,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-07-22 14:52:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:14,679 INFO L225 Difference]: With dead ends: 56 [2022-07-22 14:52:14,679 INFO L226 Difference]: Without dead ends: 51 [2022-07-22 14:52:14,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 14:52:14,680 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 114 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:52:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-22 14:52:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-07-22 14:52:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 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) [2022-07-22 14:52:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-07-22 14:52:14,694 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 45 [2022-07-22 14:52:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-07-22 14:52:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 14:52:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-07-22 14:52:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-22 14:52:14,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:14,698 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:14,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 14:52:14,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:14,698 INFO L85 PathProgramCache]: Analyzing trace with hash -731397669, now seen corresponding path program 2 times [2022-07-22 14:52:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:14,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523787077] [2022-07-22 14:52:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:14,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 14:52:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 14:52:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 14:52:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523787077] [2022-07-22 14:52:15,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523787077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654357901] [2022-07-22 14:52:15,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 14:52:15,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:52:15,548 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) [2022-07-22 14:52:15,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 14:52:15,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 14:52:15,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 14:52:15,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 193 conjunts are in the unsatisfiable core [2022-07-22 14:52:15,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:52:15,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 [2022-07-22 14:52:15,859 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 13 treesize of output 9 [2022-07-22 14:52:15,865 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 13 treesize of output 9 [2022-07-22 14:52:16,122 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 14:52:16,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 14:52:16,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 14:52:16,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 14:52:16,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-22 14:52:16,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 14:52:16,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-22 14:52:16,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 14:52:16,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 14:52:16,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 14:52:16,342 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 14:52:16,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 91 [2022-07-22 14:52:16,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-22 14:52:16,363 INFO L356 Elim1Store]: treesize reduction 84, result has 21.5 percent of original size [2022-07-22 14:52:16,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 70 [2022-07-22 14:52:16,658 INFO L356 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-07-22 14:52:16,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 71 [2022-07-22 14:52:16,665 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 14:52:16,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 18 [2022-07-22 14:52:16,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,841 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-07-22 14:52:16,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 108 [2022-07-22 14:52:16,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-22 14:52:16,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,857 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-22 14:52:16,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 76 [2022-07-22 14:52:16,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:16,871 INFO L356 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-07-22 14:52:16,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-07-22 14:52:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:52:17,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:52:17,478 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1466 (Array Int Int)) (v_ArrVal_1465 (Array Int Int)) (v_ArrVal_1464 (Array Int Int)) (v_ArrVal_1463 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| v_ArrVal_1463) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1464) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1465) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.offset|)) |c_ULTIMATE.start_dll_append_~new_last~0#1.base| v_ArrVal_1466) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-07-22 14:52:18,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654357901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:18,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:52:18,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 45 [2022-07-22 14:52:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971337679] [2022-07-22 14:52:18,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:52:18,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-22 14:52:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:52:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-22 14:52:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2888, Unknown=4, NotChecked=108, Total=3192 [2022-07-22 14:52:18,393 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 45 states, 43 states have (on average 1.558139534883721) internal successors, (67), 37 states have internal predecessors, (67), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:52:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:52:19,578 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-07-22 14:52:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 14:52:19,578 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.558139534883721) internal successors, (67), 37 states have internal predecessors, (67), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-07-22 14:52:19,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:52:19,579 INFO L225 Difference]: With dead ends: 79 [2022-07-22 14:52:19,579 INFO L226 Difference]: Without dead ends: 64 [2022-07-22 14:52:19,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=315, Invalid=4241, Unknown=4, NotChecked=132, Total=4692 [2022-07-22 14:52:19,581 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 14:52:19,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 391 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 648 Invalid, 0 Unknown, 68 Unchecked, 0.5s Time] [2022-07-22 14:52:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-22 14:52:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2022-07-22 14:52:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 14:52:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-07-22 14:52:19,608 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 46 [2022-07-22 14:52:19,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:52:19,608 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-07-22 14:52:19,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.558139534883721) internal successors, (67), 37 states have internal predecessors, (67), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 14:52:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-07-22 14:52:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 14:52:19,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:52:19,609 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:52:19,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 14:52:19,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:19,811 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:52:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:52:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2018358036, now seen corresponding path program 1 times [2022-07-22 14:52:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:52:19,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915650971] [2022-07-22 14:52:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:19,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:52:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 14:52:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 14:52:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 14:52:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 14:52:21,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:52:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915650971] [2022-07-22 14:52:21,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915650971] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 14:52:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920742831] [2022-07-22 14:52:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:52:21,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 14:52:21,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:52:21,030 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) [2022-07-22 14:52:21,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 14:52:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:52:21,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 161 conjunts are in the unsatisfiable core [2022-07-22 14:52:21,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:52:21,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-07-22 14:52:21,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 14:52:21,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 14:52:21,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:21,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 14:52:21,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 14:52:21,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 14:52:21,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 14:52:21,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 14:52:21,898 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 14:52:21,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-22 14:52:21,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:21,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:21,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:22,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:22,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-22 14:52:22,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:22,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-22 14:52:22,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 14:52:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,171 INFO L356 Elim1Store]: treesize reduction 61, result has 12.9 percent of original size [2022-07-22 14:52:22,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 106 [2022-07-22 14:52:22,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2022-07-22 14:52:22,184 INFO L356 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-07-22 14:52:22,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2022-07-22 14:52:22,608 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-22 14:52:22,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 181 treesize of output 65 [2022-07-22 14:52:22,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2022-07-22 14:52:22,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 14:52:22,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-22 14:52:22,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,805 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-07-22 14:52:22,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 191 treesize of output 159 [2022-07-22 14:52:22,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,820 INFO L356 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-07-22 14:52:22,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 165 treesize of output 162 [2022-07-22 14:52:22,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:22,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-22 14:52:22,840 INFO L356 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2022-07-22 14:52:22,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2022-07-22 14:52:23,375 INFO L356 Elim1Store]: treesize reduction 47, result has 48.9 percent of original size [2022-07-22 14:52:23,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 64 [2022-07-22 14:52:23,450 INFO L356 Elim1Store]: treesize reduction 190, result has 15.9 percent of original size [2022-07-22 14:52:23,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 232 treesize of output 130 [2022-07-22 14:52:23,487 INFO L356 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2022-07-22 14:52:23,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 298 treesize of output 254 [2022-07-22 14:52:23,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:23,526 INFO L356 Elim1Store]: treesize reduction 116, result has 22.7 percent of original size [2022-07-22 14:52:23,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 228 treesize of output 214 [2022-07-22 14:52:23,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:23,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 14:52:23,541 INFO L356 Elim1Store]: treesize reduction 43, result has 10.4 percent of original size [2022-07-22 14:52:23,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 231 [2022-07-22 14:52:23,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2022-07-22 14:52:23,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2022-07-22 14:52:27,561 INFO L356 Elim1Store]: treesize reduction 164, result has 79.8 percent of original size [2022-07-22 14:52:27,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 17 new quantified variables, introduced 55 case distinctions, treesize of input 691 treesize of output 887 [2022-07-22 14:52:28,675 INFO L356 Elim1Store]: treesize reduction 40, result has 91.0 percent of original size [2022-07-22 14:52:28,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 896 treesize of output 1133