./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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-ext3-properties/sll_of_sll_nondet_append-1.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 fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:54:45,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:54:45,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:54:45,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:54:45,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:54:45,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:54:45,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:54:45,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:54:45,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:54:45,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:54:45,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:54:45,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:54:45,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:54:45,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:54:45,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:54:45,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:54:45,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:54:45,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:54:45,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:54:45,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:54:45,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:54:45,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:54:45,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:54:45,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:54:45,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:54:45,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:54:45,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:54:45,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:54:45,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:54:45,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:54:45,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:54:45,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:54:45,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:54:45,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:54:45,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:54:45,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:54:45,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:54:45,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:54:45,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:54:45,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:54:45,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:54:45,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:54:45,719 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:54:45,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:54:45,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:54:45,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:54:45,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:54:45,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:54:45,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:54:45,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:54:45,723 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:54:45,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:54:45,724 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:54:45,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:54:45,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:54:45,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:54:45,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:54:45,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:54:45,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:54:45,725 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:54:45,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:54:45,727 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:54:45,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:54:45,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:54:45,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:54:45,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:54:45,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:54:45,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:54:45,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:54:45,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:54:45,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:54:45,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:54:45,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:54:45,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:54:45,734 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:54:45,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:54:45,734 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:54:45,735 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 [2023-02-17 00:54:45,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:54:46,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:54:46,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:54:46,018 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:54:46,018 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:54:46,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2023-02-17 00:54:47,106 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:54:47,308 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:54:47,309 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2023-02-17 00:54:47,320 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6cc8d81/b2483ee24e304e5fbc85dc8dbf147a05/FLAGe224c2f0a [2023-02-17 00:54:47,332 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6cc8d81/b2483ee24e304e5fbc85dc8dbf147a05 [2023-02-17 00:54:47,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:54:47,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:54:47,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:54:47,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:54:47,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:54:47,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6dfb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47, skipping insertion in model container [2023-02-17 00:54:47,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:54:47,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:54:47,626 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i[24987,25000] [2023-02-17 00:54:47,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:54:47,649 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:54:47,699 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i[24987,25000] [2023-02-17 00:54:47,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:54:47,723 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:54:47,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47 WrapperNode [2023-02-17 00:54:47,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:54:47,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:54:47,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:54:47,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:54:47,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,766 INFO L138 Inliner]: procedures = 129, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 179 [2023-02-17 00:54:47,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:54:47,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:54:47,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:54:47,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:54:47,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:54:47,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:54:47,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:54:47,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:54:47,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (1/1) ... [2023-02-17 00:54:47,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:54:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:54:47,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 00:54:47,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 00:54:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-02-17 00:54:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-02-17 00:54:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 00:54:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:54:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 00:54:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 00:54:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 00:54:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:54:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 00:54:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:54:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:54:47,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:54:47,985 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:54:47,987 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:54:48,023 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-02-17 00:54:48,328 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:54:48,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:54:48,334 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2023-02-17 00:54:48,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:54:48 BoogieIcfgContainer [2023-02-17 00:54:48,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:54:48,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:54:48,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:54:48,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:54:48,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:54:47" (1/3) ... [2023-02-17 00:54:48,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5546b0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:54:48, skipping insertion in model container [2023-02-17 00:54:48,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:54:47" (2/3) ... [2023-02-17 00:54:48,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5546b0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:54:48, skipping insertion in model container [2023-02-17 00:54:48,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:54:48" (3/3) ... [2023-02-17 00:54:48,353 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2023-02-17 00:54:48,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:54:48,375 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:54:48,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:54:48,438 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4807a2d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:54:48,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:54:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 44 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 00:54:48,446 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:48,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:48,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2121336049, now seen corresponding path program 1 times [2023-02-17 00:54:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:48,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951949615] [2023-02-17 00:54:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:48,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951949615] [2023-02-17 00:54:48,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951949615] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:54:48,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:54:48,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:54:48,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744888581] [2023-02-17 00:54:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:54:48,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:54:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:54:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:54:48,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:54:48,609 INFO L87 Difference]: Start difference. First operand has 46 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 44 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:54:48,640 INFO L93 Difference]: Finished difference Result 90 states and 140 transitions. [2023-02-17 00:54:48,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:54:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 00:54:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:54:48,647 INFO L225 Difference]: With dead ends: 90 [2023-02-17 00:54:48,647 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 00:54:48,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:54:48,657 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:54:48,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:54:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 00:54:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-02-17 00:54:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2023-02-17 00:54:48,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 7 [2023-02-17 00:54:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:54:48,692 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2023-02-17 00:54:48,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2023-02-17 00:54:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 00:54:48,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:48,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:48,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:54:48,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2100673088, now seen corresponding path program 1 times [2023-02-17 00:54:48,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:48,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990505341] [2023-02-17 00:54:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:48,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990505341] [2023-02-17 00:54:48,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990505341] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:54:48,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:54:48,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:54:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744472305] [2023-02-17 00:54:48,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:54:48,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 00:54:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:54:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 00:54:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 00:54:48,836 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:54:48,888 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2023-02-17 00:54:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:54:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 00:54:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:54:48,890 INFO L225 Difference]: With dead ends: 62 [2023-02-17 00:54:48,890 INFO L226 Difference]: Without dead ends: 46 [2023-02-17 00:54:48,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:54:48,891 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:54:48,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 109 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:54:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-17 00:54:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2023-02-17 00:54:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2023-02-17 00:54:48,901 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 7 [2023-02-17 00:54:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:54:48,901 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2023-02-17 00:54:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2023-02-17 00:54:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:54:48,909 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:48,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:54:48,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2103248719, now seen corresponding path program 1 times [2023-02-17 00:54:48,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:48,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701364177] [2023-02-17 00:54:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:48,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 00:54:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:49,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701364177] [2023-02-17 00:54:49,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701364177] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:54:49,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:54:49,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:54:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256973147] [2023-02-17 00:54:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:54:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 00:54:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:54:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 00:54:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 00:54:49,067 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:49,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:54:49,107 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2023-02-17 00:54:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 00:54:49,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-17 00:54:49,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:54:49,109 INFO L225 Difference]: With dead ends: 76 [2023-02-17 00:54:49,109 INFO L226 Difference]: Without dead ends: 74 [2023-02-17 00:54:49,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:54:49,110 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:54:49,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 61 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:54:49,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-17 00:54:49,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 41. [2023-02-17 00:54:49,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2023-02-17 00:54:49,118 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 24 [2023-02-17 00:54:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:54:49,119 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2023-02-17 00:54:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2023-02-17 00:54:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-17 00:54:49,120 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:49,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:49,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 00:54:49,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1383485699, now seen corresponding path program 1 times [2023-02-17 00:54:49,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837349296] [2023-02-17 00:54:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 00:54:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:49,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837349296] [2023-02-17 00:54:49,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837349296] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:54:49,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550934689] [2023-02-17 00:54:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:49,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:54:49,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:54:49,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:54:49,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:54:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:49,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 00:54:49,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:54:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:49,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:54:49,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550934689] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:54:49,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 00:54:49,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-02-17 00:54:49,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349444543] [2023-02-17 00:54:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:54:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 00:54:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:54:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 00:54:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:54:49,534 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:49,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:54:49,613 INFO L93 Difference]: Finished difference Result 90 states and 117 transitions. [2023-02-17 00:54:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:54:49,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-17 00:54:49,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:54:49,617 INFO L225 Difference]: With dead ends: 90 [2023-02-17 00:54:49,617 INFO L226 Difference]: Without dead ends: 56 [2023-02-17 00:54:49,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:54:49,624 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 85 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:54:49,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:54:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-17 00:54:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2023-02-17 00:54:49,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-02-17 00:54:49,641 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 31 [2023-02-17 00:54:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:54:49,641 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-02-17 00:54:49,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-02-17 00:54:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-17 00:54:49,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:49,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:49,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 00:54:49,848 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 [2023-02-17 00:54:49,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash -104664242, now seen corresponding path program 1 times [2023-02-17 00:54:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:49,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023573839] [2023-02-17 00:54:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 00:54:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:49,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023573839] [2023-02-17 00:54:49,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023573839] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:54:49,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440468766] [2023-02-17 00:54:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:49,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:54:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:54:49,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:54:50,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:54:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:50,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 00:54:50,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:54:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:50,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:54:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440468766] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:54:50,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:54:50,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2023-02-17 00:54:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23279255] [2023-02-17 00:54:50,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:54:50,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 00:54:50,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:54:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 00:54:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:54:50,169 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:54:50,354 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2023-02-17 00:54:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 00:54:50,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-02-17 00:54:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:54:50,357 INFO L225 Difference]: With dead ends: 157 [2023-02-17 00:54:50,358 INFO L226 Difference]: Without dead ends: 122 [2023-02-17 00:54:50,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2023-02-17 00:54:50,359 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 340 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:54:50,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 274 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:54:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-17 00:54:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 78. [2023-02-17 00:54:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2597402597402598) internal successors, (97), 77 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2023-02-17 00:54:50,394 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 34 [2023-02-17 00:54:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:54:50,395 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2023-02-17 00:54:50,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:50,395 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2023-02-17 00:54:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 00:54:50,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:50,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:50,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 00:54:50,604 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 [2023-02-17 00:54:50,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:50,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:50,605 INFO L85 PathProgramCache]: Analyzing trace with hash 781583480, now seen corresponding path program 2 times [2023-02-17 00:54:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:50,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312679576] [2023-02-17 00:54:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 00:54:50,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:50,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312679576] [2023-02-17 00:54:50,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312679576] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:54:50,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163088954] [2023-02-17 00:54:50,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:54:50,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:54:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:54:50,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:54:50,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 00:54:50,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:54:50,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:54:50,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 00:54:50,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:54:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:50,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:54:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:54:51,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163088954] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:54:51,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:54:51,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 12 [2023-02-17 00:54:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304945275] [2023-02-17 00:54:51,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:54:51,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 00:54:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:54:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 00:54:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:54:51,006 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:54:51,338 INFO L93 Difference]: Finished difference Result 217 states and 274 transitions. [2023-02-17 00:54:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-17 00:54:51,338 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-02-17 00:54:51,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:54:51,339 INFO L225 Difference]: With dead ends: 217 [2023-02-17 00:54:51,340 INFO L226 Difference]: Without dead ends: 176 [2023-02-17 00:54:51,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 76 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2023-02-17 00:54:51,341 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 325 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:54:51,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 517 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 00:54:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-02-17 00:54:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 126. [2023-02-17 00:54:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.24) internal successors, (155), 125 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-17 00:54:51,369 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 45 [2023-02-17 00:54:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:54:51,370 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-17 00:54:51,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:54:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-17 00:54:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 00:54:51,375 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:54:51,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:54:51,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 00:54:51,582 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 [2023-02-17 00:54:51,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:54:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:54:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash -321691474, now seen corresponding path program 3 times [2023-02-17 00:54:51,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:54:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797662866] [2023-02-17 00:54:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:54:51,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:54:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:54:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-02-17 00:54:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:54:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797662866] [2023-02-17 00:54:52,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797662866] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:54:52,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944386121] [2023-02-17 00:54:52,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 00:54:52,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:54:52,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:54:52,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:54:52,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 00:54:52,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 00:54:52,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:54:52,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-17 00:54:52,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:54:52,539 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:54:52,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:54:52,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 00:54:52,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:54:52,643 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:54:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:54:52,649 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:54:52,676 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 32 [2023-02-17 00:54:52,681 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2023-02-17 00:54:52,705 INFO L350 Elim1Store]: Elim1 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 33 treesize of output 32 [2023-02-17 00:54:52,709 INFO L350 Elim1Store]: Elim1 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 41 treesize of output 40 [2023-02-17 00:54:52,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:54:52,821 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 123 [2023-02-17 00:54:52,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:54:52,831 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 112 [2023-02-17 00:54:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 00:54:53,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:54:53,298 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:54:53,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 15698 treesize of output 14274 [2023-02-17 00:54:53,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:54:53,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 120 case distinctions, treesize of input 273241 treesize of output 253303