./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/heap-manipulation/sll_to_dll_rev-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 23:21:00,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 23:21:00,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 23:21:01,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 23:21:01,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 23:21:01,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 23:21:01,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 23:21:01,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 23:21:01,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 23:21:01,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 23:21:01,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 23:21:01,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 23:21:01,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 23:21:01,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 23:21:01,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 23:21:01,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 23:21:01,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 23:21:01,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 23:21:01,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 23:21:01,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 23:21:01,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 23:21:01,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 23:21:01,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 23:21:01,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 23:21:01,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 23:21:01,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 23:21:01,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 23:21:01,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 23:21:01,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 23:21:01,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 23:21:01,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 23:21:01,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 23:21:01,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 23:21:01,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 23:21:01,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 23:21:01,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 23:21:01,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 23:21:01,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 23:21:01,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 23:21:01,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 23:21:01,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 23:21:01,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 23:21:01,126 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 23:21:01,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 23:21:01,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 23:21:01,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 23:21:01,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 23:21:01,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 23:21:01,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 23:21:01,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 23:21:01,129 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 23:21:01,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 23:21:01,130 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 23:21:01,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 23:21:01,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 23:21:01,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 23:21:01,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 23:21:01,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 23:21:01,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 23:21:01,131 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 23:21:01,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 23:21:01,131 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 23:21:01,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 23:21:01,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 23:21:01,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 23:21:01,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 23:21:01,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:21:01,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 23:21:01,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 23:21:01,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 23:21:01,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 23:21:01,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 23:21:01,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 23:21:01,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 23:21:01,134 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 23:21:01,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 23:21:01,134 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 23:21:01,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2023-02-13 23:21:01,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 23:21:01,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 23:21:01,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 23:21:01,351 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 23:21:01,351 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 23:21:01,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2023-02-13 23:21:02,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 23:21:02,654 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 23:21:02,661 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2023-02-13 23:21:02,671 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d20718c2/60fd3c7e1f1e482d9cedee1b94f0be0a/FLAG6b19f6f7c [2023-02-13 23:21:02,684 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d20718c2/60fd3c7e1f1e482d9cedee1b94f0be0a [2023-02-13 23:21:02,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 23:21:02,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 23:21:02,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 23:21:02,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 23:21:02,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 23:21:02,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:21:02" (1/1) ... [2023-02-13 23:21:02,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2388e481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:02, skipping insertion in model container [2023-02-13 23:21:02,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:21:02" (1/1) ... [2023-02-13 23:21:02,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 23:21:02,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:21:02,994 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/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2023-02-13 23:21:03,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:21:03,041 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 23:21:03,074 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/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2023-02-13 23:21:03,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:21:03,107 INFO L208 MainTranslator]: Completed translation [2023-02-13 23:21:03,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03 WrapperNode [2023-02-13 23:21:03,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 23:21:03,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 23:21:03,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 23:21:03,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 23:21:03,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,161 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 200 [2023-02-13 23:21:03,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 23:21:03,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 23:21:03,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 23:21:03,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 23:21:03,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 23:21:03,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 23:21:03,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 23:21:03,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 23:21:03,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (1/1) ... [2023-02-13 23:21:03,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:21:03,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:21:03,258 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) [2023-02-13 23:21:03,282 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 [2023-02-13 23:21:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-02-13 23:21:03,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-02-13 23:21:03,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-13 23:21:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 23:21:03,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-13 23:21:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-13 23:21:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-13 23:21:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2023-02-13 23:21:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2023-02-13 23:21:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-13 23:21:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-13 23:21:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2023-02-13 23:21:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2023-02-13 23:21:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 23:21:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2023-02-13 23:21:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2023-02-13 23:21:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 23:21:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 23:21:03,424 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 23:21:03,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 23:21:03,774 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 23:21:03,783 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 23:21:03,785 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2023-02-13 23:21:03,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:21:03 BoogieIcfgContainer [2023-02-13 23:21:03,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 23:21:03,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 23:21:03,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 23:21:03,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 23:21:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 11:21:02" (1/3) ... [2023-02-13 23:21:03,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c96d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:21:03, skipping insertion in model container [2023-02-13 23:21:03,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:21:03" (2/3) ... [2023-02-13 23:21:03,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c96d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:21:03, skipping insertion in model container [2023-02-13 23:21:03,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:21:03" (3/3) ... [2023-02-13 23:21:03,795 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2023-02-13 23:21:03,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 23:21:03,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-13 23:21:03,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 23:21:03,869 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;@4d24189c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 23:21:03,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-13 23:21:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 76 states have (on average 1.6578947368421053) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-13 23:21:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-13 23:21:03,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:03,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:21:03,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:03,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1660370747, now seen corresponding path program 1 times [2023-02-13 23:21:03,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:03,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626675055] [2023-02-13 23:21:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 23:21:04,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:21:04,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626675055] [2023-02-13 23:21:04,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626675055] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:21:04,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:21:04,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-13 23:21:04,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194741519] [2023-02-13 23:21:04,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:21:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-13 23:21:04,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:21:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-13 23:21:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-13 23:21:04,140 INFO L87 Difference]: Start difference. First operand has 96 states, 76 states have (on average 1.6578947368421053) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) [2023-02-13 23:21:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:21:04,191 INFO L93 Difference]: Finished difference Result 188 states and 326 transitions. [2023-02-13 23:21:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-13 23:21:04,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) Word has length 16 [2023-02-13 23:21:04,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:21:04,201 INFO L225 Difference]: With dead ends: 188 [2023-02-13 23:21:04,201 INFO L226 Difference]: Without dead ends: 88 [2023-02-13 23:21:04,207 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 [2023-02-13 23:21:04,210 INFO L413 NwaCegarLoop]: 115 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, 115 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 [2023-02-13 23:21:04,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 23:21:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-13 23:21:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-13 23:21:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 75 states have internal predecessors, (83), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:21:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2023-02-13 23:21:04,257 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 16 [2023-02-13 23:21:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:21:04,258 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2023-02-13 23:21:04,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) [2023-02-13 23:21:04,258 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2023-02-13 23:21:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-13 23:21:04,261 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:04,261 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-02-13 23:21:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-13 23:21:04,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1299807145, now seen corresponding path program 1 times [2023-02-13 23:21:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:04,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141697958] [2023-02-13 23:21:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:04,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:21:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:21:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:21:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-13 23:21:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:21:06,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141697958] [2023-02-13 23:21:06,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141697958] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:06,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364401674] [2023-02-13 23:21:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:06,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:06,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:21:06,157 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) [2023-02-13 23:21:06,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 23:21:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:06,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-13 23:21:06,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:21:06,433 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 12 [2023-02-13 23:21:06,631 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:21:06,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:21:06,638 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-13 23:21:06,645 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:21:06,707 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-02-13 23:21:06,708 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2023-02-13 23:21:06,711 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 16 [2023-02-13 23:21:06,827 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 24 treesize of output 19 [2023-02-13 23:21:06,869 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-02-13 23:21:06,992 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_329 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_327) |chain_node_~node~0#1.base| v_ArrVal_328) |c_chain_node_#in~ppnode#1.base| v_ArrVal_329) |c_#memory_$Pointer$.base|) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-13 23:21:07,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:07,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:07,046 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-13 23:21:07,046 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2023-02-13 23:21:07,050 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:21:07,099 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 8 [2023-02-13 23:21:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-02-13 23:21:07,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:21:07,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364401674] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:07,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:21:07,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2023-02-13 23:21:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883981597] [2023-02-13 23:21:07,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:21:07,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-13 23:21:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:21:07,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-13 23:21:07,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=479, Unknown=11, NotChecked=44, Total=600 [2023-02-13 23:21:07,238 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 24 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-13 23:21:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:21:08,437 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2023-02-13 23:21:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-13 23:21:08,437 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2023-02-13 23:21:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:21:08,440 INFO L225 Difference]: With dead ends: 132 [2023-02-13 23:21:08,440 INFO L226 Difference]: Without dead ends: 129 [2023-02-13 23:21:08,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=973, Unknown=11, NotChecked=64, Total=1190 [2023-02-13 23:21:08,442 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 219 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-13 23:21:08,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 549 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1217 Invalid, 0 Unknown, 158 Unchecked, 0.8s Time] [2023-02-13 23:21:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-13 23:21:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2023-02-13 23:21:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 86 states have internal predecessors, (97), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:21:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2023-02-13 23:21:08,456 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 40 [2023-02-13 23:21:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:21:08,456 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2023-02-13 23:21:08,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-13 23:21:08,456 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2023-02-13 23:21:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-13 23:21:08,457 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:08,458 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-02-13 23:21:08,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-13 23:21:08,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:08,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash -727961485, now seen corresponding path program 1 times [2023-02-13 23:21:08,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:08,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997389436] [2023-02-13 23:21:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:08,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:21:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:21:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:21:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-13 23:21:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:21:10,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997389436] [2023-02-13 23:21:10,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997389436] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:10,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201282280] [2023-02-13 23:21:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:21:10,008 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) [2023-02-13 23:21:10,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 23:21:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:10,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 85 conjunts are in the unsatisfiable core [2023-02-13 23:21:10,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:21:10,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-13 23:21:10,262 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:21:10,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:21:10,268 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-13 23:21:10,276 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:21:10,293 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 66 treesize of output 19 [2023-02-13 23:21:10,296 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:21:10,429 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-13 23:21:10,429 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 1 case distinctions, treesize of input 24 treesize of output 19 [2023-02-13 23:21:10,472 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:21:10,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2023-02-13 23:21:10,561 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_645 (Array Int Int)) (v_ArrVal_644 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_643 (Array Int Int))) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_643) |chain_node_~node~0#1.base| v_ArrVal_644) |c_chain_node_#in~ppnode#1.base| v_ArrVal_645) |c_#memory_$Pointer$.base|))) is different from true [2023-02-13 23:21:10,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:10,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:10,631 INFO L321 Elim1Store]: treesize reduction 43, result has 47.6 percent of original size [2023-02-13 23:21:10,632 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 57 [2023-02-13 23:21:10,649 INFO L350 Elim1Store]: Elim1 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 6 treesize of output 4 [2023-02-13 23:21:10,716 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 19 treesize of output 21 [2023-02-13 23:21:10,760 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 8 [2023-02-13 23:21:10,864 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_649 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_650 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_649) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_650) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2023-02-13 23:21:10,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:10,925 INFO L321 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2023-02-13 23:21:10,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 101 [2023-02-13 23:21:10,934 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-13 23:21:10,951 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:21:10,967 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:21:11,083 INFO L321 Elim1Store]: treesize reduction 73, result has 19.8 percent of original size [2023-02-13 23:21:11,083 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 64 [2023-02-13 23:21:11,090 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 21 [2023-02-13 23:21:11,123 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2023-02-13 23:21:11,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:21:11,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 42 [2023-02-13 23:21:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2023-02-13 23:21:11,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:21:11,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201282280] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:11,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:21:11,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 29 [2023-02-13 23:21:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217633832] [2023-02-13 23:21:11,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:21:11,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-13 23:21:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:21:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-13 23:21:11,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=671, Unknown=5, NotChecked=106, Total=870 [2023-02-13 23:21:11,453 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 29 states, 23 states have (on average 2.260869565217391) internal successors, (52), 26 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-13 23:21:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:21:12,976 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2023-02-13 23:21:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-13 23:21:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 23 states have (on average 2.260869565217391) internal successors, (52), 26 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2023-02-13 23:21:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:21:12,978 INFO L225 Difference]: With dead ends: 132 [2023-02-13 23:21:12,979 INFO L226 Difference]: Without dead ends: 129 [2023-02-13 23:21:12,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=1446, Unknown=5, NotChecked=158, Total=1806 [2023-02-13 23:21:12,980 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 149 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 54 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:21:12,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 787 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1520 Invalid, 5 Unknown, 256 Unchecked, 1.0s Time] [2023-02-13 23:21:12,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-13 23:21:12,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2023-02-13 23:21:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 86 states have internal predecessors, (96), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:21:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2023-02-13 23:21:12,994 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 42 [2023-02-13 23:21:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:21:12,995 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2023-02-13 23:21:12,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 23 states have (on average 2.260869565217391) internal successors, (52), 26 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-13 23:21:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2023-02-13 23:21:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-13 23:21:12,996 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:12,996 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:21:13,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-13 23:21:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-13 23:21:13,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1343975071, now seen corresponding path program 1 times [2023-02-13 23:21:13,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:13,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770225194] [2023-02-13 23:21:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:21:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:21:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:15,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:21:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-13 23:21:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:21:16,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770225194] [2023-02-13 23:21:16,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770225194] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:16,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153027670] [2023-02-13 23:21:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:16,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:21:16,742 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) [2023-02-13 23:21:16,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-13 23:21:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:16,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 139 conjunts are in the unsatisfiable core [2023-02-13 23:21:16,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:21:16,953 INFO L350 Elim1Store]: Elim1 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 42 [2023-02-13 23:21:17,073 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:21:17,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:21:17,077 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-13 23:21:17,085 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:21:17,122 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2023-02-13 23:21:17,123 INFO L350 Elim1Store]: Elim1 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 66 treesize of output 26 [2023-02-13 23:21:17,125 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 15 [2023-02-13 23:21:17,419 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-02-13 23:21:17,420 INFO L350 Elim1Store]: Elim1 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 74 treesize of output 70 [2023-02-13 23:21:17,437 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:21:17,503 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 4 [2023-02-13 23:21:17,542 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:17,714 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:21:17,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:21:17,725 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 8 treesize of output 7 [2023-02-13 23:21:17,734 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 12 treesize of output 11 [2023-02-13 23:21:17,752 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 42 treesize of output 15 [2023-02-13 23:21:17,756 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:21:17,794 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 22 [2023-02-13 23:21:17,806 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-13 23:21:17,806 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 29 [2023-02-13 23:21:17,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:17,991 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 34 treesize of output 29 [2023-02-13 23:21:17,996 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 13 [2023-02-13 23:21:18,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 23 [2023-02-13 23:21:18,158 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2023-02-13 23:21:18,158 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 45 [2023-02-13 23:21:18,175 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-13 23:21:18,176 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2023-02-13 23:21:18,272 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-02-13 23:21:18,272 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 23 [2023-02-13 23:21:18,280 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:21:18,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 3 [2023-02-13 23:21:18,286 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:18,494 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_982 (Array Int Int)) (|chain_node_~node~0#1.offset| Int) (v_ArrVal_983 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_982 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_982) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (= (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_983 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_983) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse1 |c_chain_node_#in~ppnode#1.base| (store (select .cse1 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.offset|))) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:21:18,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:18,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:18,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:18,572 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-02-13 23:21:18,572 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 2 case distinctions, treesize of input 49 treesize of output 57 [2023-02-13 23:21:18,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:18,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:18,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:18,613 INFO L321 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2023-02-13 23:21:18,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 88 [2023-02-13 23:21:18,627 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 10 treesize of output 9 [2023-02-13 23:21:18,635 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 9 [2023-02-13 23:21:18,647 INFO L321 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-02-13 23:21:18,647 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2023-02-13 23:21:18,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 63 treesize of output 48 [2023-02-13 23:21:18,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 20 [2023-02-13 23:21:18,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 56 treesize of output 43 [2023-02-13 23:21:18,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2023-02-13 23:21:19,395 INFO L321 Elim1Store]: treesize reduction 16, result has 82.8 percent of original size [2023-02-13 23:21:19,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 241 [2023-02-13 23:21:21,903 INFO L321 Elim1Store]: treesize reduction 80, result has 79.8 percent of original size [2023-02-13 23:21:21,903 INFO L350 Elim1Store]: Elim1 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 13 new quantified variables, introduced 36 case distinctions, treesize of input 190 treesize of output 406 [2023-02-13 23:21:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 2 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-13 23:21:25,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:21:26,183 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~node~0#1.offset_10| Int) (|v_chain_node_~node~0#1.base_10| Int) (v_ArrVal_1013 (Array Int Int)) (v_ArrVal_1012 (Array Int Int))) (or (not (= (select |c_#valid| |v_chain_node_~node~0#1.base_10|) 0)) (not (= (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_10| (store v_ArrVal_1012 |v_chain_node_~node~0#1.offset_10| (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_10| v_ArrVal_1012) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))))) (store .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| |v_chain_node_~node~0#1.base_10|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_10| (store v_ArrVal_1013 |v_chain_node_~node~0#1.offset_10| (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_10| v_ArrVal_1013) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))))) (store .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| |v_chain_node_~node~0#1.offset_10|))) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) 0)) (not (< |v_chain_node_~node~0#1.base_10| |c_#StackHeapBarrier|)))) is different from false [2023-02-13 23:21:26,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153027670] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:26,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:21:26,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 40 [2023-02-13 23:21:26,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538457714] [2023-02-13 23:21:26,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:21:26,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-13 23:21:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:21:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-13 23:21:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1694, Unknown=7, NotChecked=166, Total=1980 [2023-02-13 23:21:26,189 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-13 23:21:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:21:34,742 INFO L93 Difference]: Finished difference Result 201 states and 250 transitions. [2023-02-13 23:21:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-13 23:21:34,743 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2023-02-13 23:21:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:21:34,745 INFO L225 Difference]: With dead ends: 201 [2023-02-13 23:21:34,745 INFO L226 Difference]: Without dead ends: 198 [2023-02-13 23:21:34,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=365, Invalid=4042, Unknown=23, NotChecked=262, Total=4692 [2023-02-13 23:21:34,748 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 344 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 127 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-02-13 23:21:34,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 1021 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2577 Invalid, 28 Unknown, 194 Unchecked, 3.3s Time] [2023-02-13 23:21:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-13 23:21:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 102. [2023-02-13 23:21:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.2375) internal successors, (99), 88 states have internal predecessors, (99), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:21:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2023-02-13 23:21:34,786 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 46 [2023-02-13 23:21:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:21:34,786 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2023-02-13 23:21:34,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-13 23:21:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2023-02-13 23:21:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-13 23:21:34,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:34,788 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:21:34,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-13 23:21:34,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:34,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:34,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2055778686, now seen corresponding path program 1 times [2023-02-13 23:21:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:34,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787634296] [2023-02-13 23:21:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:34,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:36,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:21:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:21:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:36,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:21:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-13 23:21:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-13 23:21:38,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:21:38,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787634296] [2023-02-13 23:21:38,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787634296] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:38,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779438749] [2023-02-13 23:21:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:38,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:38,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:21:38,254 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) [2023-02-13 23:21:38,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-13 23:21:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:38,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 132 conjunts are in the unsatisfiable core [2023-02-13 23:21:38,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:21:38,471 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 12 [2023-02-13 23:21:38,558 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 [2023-02-13 23:21:38,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:38,605 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 17 [2023-02-13 23:21:38,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:38,612 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 17 [2023-02-13 23:21:38,690 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-13 23:21:38,691 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 61 [2023-02-13 23:21:38,696 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2023-02-13 23:21:38,723 INFO L321 Elim1Store]: treesize reduction 17, result has 56.4 percent of original size [2023-02-13 23:21:38,723 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 71 [2023-02-13 23:21:38,748 INFO L321 Elim1Store]: treesize reduction 47, result has 33.8 percent of original size [2023-02-13 23:21:38,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 56 treesize of output 85 [2023-02-13 23:21:38,774 INFO L321 Elim1Store]: treesize reduction 46, result has 34.3 percent of original size [2023-02-13 23:21:38,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 55 treesize of output 84 [2023-02-13 23:21:38,782 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 8 treesize of output 7 [2023-02-13 23:21:38,819 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2023-02-13 23:21:38,839 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-02-13 23:21:38,846 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:38,860 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 28 [2023-02-13 23:21:38,878 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 28 [2023-02-13 23:21:38,912 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2023-02-13 23:21:38,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 91 [2023-02-13 23:21:38,991 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:21:38,991 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 36 treesize of output 35 [2023-02-13 23:21:39,046 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2023-02-13 23:21:39,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 104 treesize of output 125 [2023-02-13 23:21:39,080 INFO L321 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-02-13 23:21:39,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 85 [2023-02-13 23:21:39,134 INFO L321 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2023-02-13 23:21:39,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 103 [2023-02-13 23:21:39,158 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-02-13 23:21:39,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2023-02-13 23:21:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,326 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-13 23:21:41,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,333 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 46 [2023-02-13 23:21:41,337 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 12 treesize of output 11 [2023-02-13 23:21:41,342 INFO L350 Elim1Store]: Elim1 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 68 treesize of output 54 [2023-02-13 23:21:41,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,448 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2023-02-13 23:21:41,454 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:21:41,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 18 [2023-02-13 23:21:41,458 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:41,619 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1337 (Array Int Int)) (v_ArrVal_1335 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_1340 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1340) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1337)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_1335 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_1335) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:21:41,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,668 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2023-02-13 23:21:41,669 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 68 [2023-02-13 23:21:41,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:41,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2023-02-13 23:21:41,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 33 treesize of output 26 [2023-02-13 23:21:41,698 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 12 treesize of output 11 [2023-02-13 23:21:41,702 INFO L350 Elim1Store]: Elim1 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 49 treesize of output 37 [2023-02-13 23:21:41,713 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-13 23:21:41,713 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 15 treesize of output 15 [2023-02-13 23:21:42,563 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:21:42,565 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:21:42,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 47 [2023-02-13 23:21:42,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:42,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:42,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:42,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:42,582 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:21:42,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 24 [2023-02-13 23:21:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-02-13 23:21:42,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:21:42,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779438749] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:42,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:21:42,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2023-02-13 23:21:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073854578] [2023-02-13 23:21:42,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:21:42,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-13 23:21:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:21:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-13 23:21:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=728, Unknown=1, NotChecked=54, Total=870 [2023-02-13 23:21:42,965 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand has 28 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 7 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-13 23:21:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:21:46,097 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2023-02-13 23:21:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-13 23:21:46,101 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 7 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 50 [2023-02-13 23:21:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:21:46,102 INFO L225 Difference]: With dead ends: 200 [2023-02-13 23:21:46,102 INFO L226 Difference]: Without dead ends: 197 [2023-02-13 23:21:46,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=217, Invalid=1676, Unknown=3, NotChecked=84, Total=1980 [2023-02-13 23:21:46,104 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 146 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:21:46,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 676 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1687 Invalid, 1 Unknown, 164 Unchecked, 2.0s Time] [2023-02-13 23:21:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-13 23:21:46,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2023-02-13 23:21:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 110 states have internal predecessors, (125), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-13 23:21:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 154 transitions. [2023-02-13 23:21:46,135 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 154 transitions. Word has length 50 [2023-02-13 23:21:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:21:46,135 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 154 transitions. [2023-02-13 23:21:46,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 7 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-13 23:21:46,136 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2023-02-13 23:21:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-13 23:21:46,137 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:46,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1] [2023-02-13 23:21:46,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-13 23:21:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:46,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:46,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1969592115, now seen corresponding path program 1 times [2023-02-13 23:21:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:46,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702877359] [2023-02-13 23:21:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:46,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:21:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:48,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:21:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:21:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-13 23:21:51,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:21:51,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702877359] [2023-02-13 23:21:51,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702877359] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:51,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940165308] [2023-02-13 23:21:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:51,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:51,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:21:51,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:21:51,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-13 23:21:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:21:51,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 185 conjunts are in the unsatisfiable core [2023-02-13 23:21:51,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:21:51,274 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:21:51,274 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 23 treesize of output 19 [2023-02-13 23:21:51,428 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:21:51,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:21:51,449 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:21:51,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:21:51,454 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 8 treesize of output 7 [2023-02-13 23:21:51,461 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 12 treesize of output 11 [2023-02-13 23:21:51,467 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 8 treesize of output 7 [2023-02-13 23:21:51,473 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 8 treesize of output 7 [2023-02-13 23:21:51,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:21:51,517 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2023-02-13 23:21:51,520 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:51,527 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2023-02-13 23:21:51,529 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:21:51,734 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 18 [2023-02-13 23:21:51,747 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 15 [2023-02-13 23:21:51,822 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-13 23:21:51,825 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-02-13 23:21:51,865 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-02-13 23:21:52,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-02-13 23:21:52,240 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 23 [2023-02-13 23:21:52,245 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 16 treesize of output 15 [2023-02-13 23:21:52,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 32 treesize of output 27 [2023-02-13 23:21:52,267 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 16 treesize of output 15 [2023-02-13 23:21:52,525 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-02-13 23:21:52,526 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 58 [2023-02-13 23:21:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2023-02-13 23:21:52,671 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-13 23:21:52,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 33 [2023-02-13 23:21:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2023-02-13 23:21:52,686 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:21:52,888 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1697 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_1695 (Array Int Int)) (v_ArrVal_1694 (Array Int Int)) (v_ArrVal_1692 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_1692 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_1692) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_1694) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1697) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1695) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:21:52,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,938 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2023-02-13 23:21:52,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 92 [2023-02-13 23:21:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:52,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 58 [2023-02-13 23:21:52,962 INFO L350 Elim1Store]: Elim1 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 70 treesize of output 54 [2023-02-13 23:21:52,969 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 10 treesize of output 9 [2023-02-13 23:21:52,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 23 treesize of output 18 [2023-02-13 23:21:52,993 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-13 23:21:52,993 INFO L350 Elim1Store]: Elim1 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 15 treesize of output 15 [2023-02-13 23:21:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:54,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:54,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:54,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:21:54,091 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:21:54,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 39 [2023-02-13 23:21:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2023-02-13 23:21:54,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:21:54,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940165308] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:21:54,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:21:54,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23] total 41 [2023-02-13 23:21:54,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402892268] [2023-02-13 23:21:54,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:21:54,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-13 23:21:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:21:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-13 23:21:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1593, Unknown=1, NotChecked=80, Total=1806 [2023-02-13 23:21:54,768 INFO L87 Difference]: Start difference. First operand 127 states and 154 transitions. Second operand has 41 states, 34 states have (on average 2.411764705882353) internal successors, (82), 36 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-13 23:21:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:21:58,433 INFO L93 Difference]: Finished difference Result 251 states and 308 transitions. [2023-02-13 23:21:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-13 23:21:58,434 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 34 states have (on average 2.411764705882353) internal successors, (82), 36 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2023-02-13 23:21:58,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:21:58,435 INFO L225 Difference]: With dead ends: 251 [2023-02-13 23:21:58,435 INFO L226 Difference]: Without dead ends: 181 [2023-02-13 23:21:58,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=265, Invalid=2818, Unknown=1, NotChecked=108, Total=3192 [2023-02-13 23:21:58,437 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 183 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-13 23:21:58,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 860 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2009 Invalid, 0 Unknown, 170 Unchecked, 2.5s Time] [2023-02-13 23:21:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-13 23:21:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2023-02-13 23:21:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 128 states have internal predecessors, (144), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-13 23:21:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 179 transitions. [2023-02-13 23:21:58,469 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 179 transitions. Word has length 50 [2023-02-13 23:21:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:21:58,470 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 179 transitions. [2023-02-13 23:21:58,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 34 states have (on average 2.411764705882353) internal successors, (82), 36 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-13 23:21:58,470 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 179 transitions. [2023-02-13 23:21:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-13 23:21:58,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:21:58,471 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:21:58,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-13 23:21:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:21:58,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:21:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:21:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1808852267, now seen corresponding path program 1 times [2023-02-13 23:21:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:21:58,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523362471] [2023-02-13 23:21:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:21:58,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:21:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:22:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:22:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:22:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:22:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:22:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:22:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:22:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-13 23:22:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:22:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-13 23:22:04,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:22:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523362471] [2023-02-13 23:22:04,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523362471] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:22:04,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182307253] [2023-02-13 23:22:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:22:04,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:22:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:22:04,757 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) [2023-02-13 23:22:04,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-13 23:22:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:22:04,990 WARN L261 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 231 conjunts are in the unsatisfiable core [2023-02-13 23:22:04,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:22:05,036 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-13 23:22:05,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 102 treesize of output 99 [2023-02-13 23:22:05,156 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 10 [2023-02-13 23:22:05,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:05,271 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 [2023-02-13 23:22:05,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:05,285 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 [2023-02-13 23:22:05,390 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-13 23:22:05,390 INFO L350 Elim1Store]: Elim1 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 62 treesize of output 61 [2023-02-13 23:22:05,419 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2023-02-13 23:22:05,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 48 treesize of output 73 [2023-02-13 23:22:05,459 INFO L321 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2023-02-13 23:22:05,459 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 3 case distinctions, treesize of input 43 treesize of output 45 [2023-02-13 23:22:05,468 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-13 23:22:05,501 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2023-02-13 23:22:05,528 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 28 [2023-02-13 23:22:05,559 INFO L321 Elim1Store]: treesize reduction 14, result has 56.3 percent of original size [2023-02-13 23:22:05,560 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 104 [2023-02-13 23:22:05,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:22:05,619 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 85 treesize of output 87 [2023-02-13 23:22:05,860 INFO L321 Elim1Store]: treesize reduction 264, result has 13.4 percent of original size [2023-02-13 23:22:05,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 168 [2023-02-13 23:22:05,883 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:22:05,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 20 [2023-02-13 23:22:06,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:22:06,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 59 [2023-02-13 23:22:06,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2023-02-13 23:22:06,181 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 87 treesize of output 63 [2023-02-13 23:22:06,336 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:22:06,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 38 [2023-02-13 23:22:06,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-02-13 23:22:06,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-13 23:22:06,566 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2050 (Array Int Int)) (v_ArrVal_2045 Int) (v_ArrVal_2049 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2046 (Array Int Int)) (v_ArrVal_2056 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_2046 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2046) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2050)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_2045)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2049) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2056) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:22:06,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,613 INFO L321 Elim1Store]: treesize reduction 52, result has 8.8 percent of original size [2023-02-13 23:22:06,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 83 [2023-02-13 23:22:06,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 43 [2023-02-13 23:22:06,629 INFO L350 Elim1Store]: Elim1 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 69 treesize of output 51 [2023-02-13 23:22:06,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-13 23:22:06,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,660 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-02-13 23:22:06,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 57 [2023-02-13 23:22:06,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 18 treesize of output 15 [2023-02-13 23:22:06,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2023-02-13 23:22:06,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:06,986 INFO L321 Elim1Store]: treesize reduction 31, result has 13.9 percent of original size [2023-02-13 23:22:06,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 84 [2023-02-13 23:22:07,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:22:07,166 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 83 treesize of output 42 [2023-02-13 23:22:07,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2023-02-13 23:22:07,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-13 23:22:07,360 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2060 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2068 (Array Int Int)) (v_ArrVal_2066 (Array Int Int)) (v_ArrVal_2065 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_2060 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2060) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2066)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2068) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2065) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:22:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 55 [2023-02-13 23:22:07,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,432 INFO L321 Elim1Store]: treesize reduction 74, result has 16.9 percent of original size [2023-02-13 23:22:07,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 98 [2023-02-13 23:22:07,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:07,458 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-13 23:22:07,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2023-02-13 23:22:07,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 18 treesize of output 15 [2023-02-13 23:22:07,471 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 10 treesize of output 9 [2023-02-13 23:22:07,475 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:22:07,480 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:22:08,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:08,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:22:08,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:22:08,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:22:08,973 INFO L321 Elim1Store]: treesize reduction 28, result has 22.2 percent of original size [2023-02-13 23:22:08,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 125 treesize of output 62 [2023-02-13 23:22:08,982 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:22:08,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 24 [2023-02-13 23:22:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 3 times theorem prover too weak. 1 trivial. 6 not checked. [2023-02-13 23:22:08,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:22:28,381 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-13 23:22:42,000 WARN L233 SmtUtils]: Spent 10.12s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-13 23:22:52,374 WARN L233 SmtUtils]: Spent 10.21s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-13 23:22:53,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182307253] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:22:53,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:22:53,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 49 [2023-02-13 23:22:53,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444734299] [2023-02-13 23:22:53,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:22:53,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-13 23:22:53,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:22:53,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-13 23:22:53,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2852, Unknown=7, NotChecked=218, Total=3306 [2023-02-13 23:22:53,121 INFO L87 Difference]: Start difference. First operand 148 states and 179 transitions. Second operand has 49 states, 41 states have (on average 2.073170731707317) internal successors, (85), 45 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:23:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:23:04,002 INFO L93 Difference]: Finished difference Result 322 states and 399 transitions. [2023-02-13 23:23:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-13 23:23:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 41 states have (on average 2.073170731707317) internal successors, (85), 45 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2023-02-13 23:23:04,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:23:04,005 INFO L225 Difference]: With dead ends: 322 [2023-02-13 23:23:04,005 INFO L226 Difference]: Without dead ends: 319 [2023-02-13 23:23:04,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=634, Invalid=6677, Unknown=7, NotChecked=338, Total=7656 [2023-02-13 23:23:04,007 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 596 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 232 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 382 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-02-13 23:23:04,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 987 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3137 Invalid, 1 Unknown, 382 Unchecked, 5.3s Time] [2023-02-13 23:23:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-02-13 23:23:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 147. [2023-02-13 23:23:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 127 states have internal predecessors, (143), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-13 23:23:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 177 transitions. [2023-02-13 23:23:04,054 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 177 transitions. Word has length 53 [2023-02-13 23:23:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:23:04,054 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 177 transitions. [2023-02-13 23:23:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 41 states have (on average 2.073170731707317) internal successors, (85), 45 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:23:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 177 transitions. [2023-02-13 23:23:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-13 23:23:04,055 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:23:04,055 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:23:04,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-13 23:23:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:23:04,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:23:04,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:23:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 992893756, now seen corresponding path program 1 times [2023-02-13 23:23:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:23:04,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189855127] [2023-02-13 23:23:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:23:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:23:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:23:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:23:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:07,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:23:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-13 23:23:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-13 23:23:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-13 23:23:10,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:23:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189855127] [2023-02-13 23:23:10,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189855127] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:23:10,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424434288] [2023-02-13 23:23:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:23:10,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:23:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:23:10,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:23:10,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-13 23:23:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:10,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 171 conjunts are in the unsatisfiable core [2023-02-13 23:23:10,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:23:10,975 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 12 [2023-02-13 23:23:11,077 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 [2023-02-13 23:23:11,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:11,141 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 17 [2023-02-13 23:23:11,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:11,146 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 17 [2023-02-13 23:23:11,232 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-13 23:23:11,233 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 61 [2023-02-13 23:23:11,262 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2023-02-13 23:23:11,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 48 treesize of output 73 [2023-02-13 23:23:11,293 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-13 23:23:11,294 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 61 [2023-02-13 23:23:11,336 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2023-02-13 23:23:11,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 48 treesize of output 73 [2023-02-13 23:23:11,350 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 8 treesize of output 7 [2023-02-13 23:23:11,364 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 8 treesize of output 7 [2023-02-13 23:23:11,403 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-02-13 23:23:11,409 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:23:11,426 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 28 [2023-02-13 23:23:11,464 INFO L321 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-02-13 23:23:11,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 70 [2023-02-13 23:23:11,510 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2023-02-13 23:23:11,546 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 27 treesize of output 24 [2023-02-13 23:23:11,565 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:23:11,566 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 7 [2023-02-13 23:23:11,596 INFO L321 Elim1Store]: treesize reduction 65, result has 7.1 percent of original size [2023-02-13 23:23:11,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 152 [2023-02-13 23:23:11,745 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2023-02-13 23:23:11,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 88 treesize of output 106 [2023-02-13 23:23:11,799 INFO L321 Elim1Store]: treesize reduction 53, result has 37.6 percent of original size [2023-02-13 23:23:11,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 79 treesize of output 127 [2023-02-13 23:23:11,819 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-02-13 23:23:11,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 60 [2023-02-13 23:23:11,855 INFO L350 Elim1Store]: Elim1 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 74 treesize of output 58 [2023-02-13 23:23:11,881 INFO L350 Elim1Store]: Elim1 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 98 treesize of output 78 [2023-02-13 23:23:12,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:23:12,157 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2023-02-13 23:23:12,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,165 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-13 23:23:12,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:23:12,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 25 [2023-02-13 23:23:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,262 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-02-13 23:23:12,265 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:23:12,470 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2506 (Array Int Int)) (v_ArrVal_2505 (Array Int Int)) (v_ArrVal_2503 (Array Int Int)) (v_ArrVal_2501 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2505) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2503) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2501) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2506) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:23:12,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2023-02-13 23:23:12,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 14 treesize of output 11 [2023-02-13 23:23:12,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,539 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2023-02-13 23:23:12,540 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 59 [2023-02-13 23:23:12,549 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:23:12,570 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-02-13 23:23:12,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-02-13 23:23:12,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:23:12,763 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 26 [2023-02-13 23:23:12,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 22 treesize of output 10 [2023-02-13 23:23:12,774 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-13 23:23:12,942 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2513 (Array Int Int)) (v_ArrVal_2511 (Array Int Int)) (v_ArrVal_2510 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2507 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_2507 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2507) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2511)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2510) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2513) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:23:12,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2023-02-13 23:23:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:12,996 INFO L321 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2023-02-13 23:23:12,996 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 67 treesize of output 67 [2023-02-13 23:23:13,023 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-13 23:23:13,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-13 23:23:13,027 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 12 [2023-02-13 23:23:13,030 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 8 treesize of output 7 [2023-02-13 23:23:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:23:13,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:23:13,601 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 42 [2023-02-13 23:23:13,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:13,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:13,610 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:23:13,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-02-13 23:23:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2023-02-13 23:23:13,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:23:14,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424434288] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:23:14,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:23:14,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2023-02-13 23:23:14,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086309931] [2023-02-13 23:23:14,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:23:14,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-13 23:23:14,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:23:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-13 23:23:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1132, Unknown=3, NotChecked=138, Total=1406 [2023-02-13 23:23:14,064 INFO L87 Difference]: Start difference. First operand 147 states and 177 transitions. Second operand has 36 states, 32 states have (on average 2.78125) internal successors, (89), 34 states have internal predecessors, (89), 9 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-13 23:23:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:23:18,890 INFO L93 Difference]: Finished difference Result 211 states and 253 transitions. [2023-02-13 23:23:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-13 23:23:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 2.78125) internal successors, (89), 34 states have internal predecessors, (89), 9 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 59 [2023-02-13 23:23:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:23:18,893 INFO L225 Difference]: With dead ends: 211 [2023-02-13 23:23:18,893 INFO L226 Difference]: Without dead ends: 208 [2023-02-13 23:23:18,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=250, Invalid=1916, Unknown=4, NotChecked=182, Total=2352 [2023-02-13 23:23:18,894 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 161 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 62 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-13 23:23:18,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 613 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1643 Invalid, 3 Unknown, 278 Unchecked, 2.5s Time] [2023-02-13 23:23:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-02-13 23:23:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 121. [2023-02-13 23:23:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 104 states have internal predecessors, (116), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-13 23:23:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2023-02-13 23:23:18,933 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 59 [2023-02-13 23:23:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:23:18,933 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2023-02-13 23:23:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 2.78125) internal successors, (89), 34 states have internal predecessors, (89), 9 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-13 23:23:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2023-02-13 23:23:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-13 23:23:18,935 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:23:18,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:23:18,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-13 23:23:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:23:19,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:23:19,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:23:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1079080327, now seen corresponding path program 1 times [2023-02-13 23:23:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:23:19,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108757126] [2023-02-13 23:23:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:23:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:23:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:23:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:23:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:23:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-13 23:23:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-13 23:23:26,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:23:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108757126] [2023-02-13 23:23:26,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108757126] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:23:26,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483886463] [2023-02-13 23:23:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:23:26,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:23:26,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:23:26,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:23:26,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-13 23:23:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:27,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 235 conjunts are in the unsatisfiable core [2023-02-13 23:23:27,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:23:27,106 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-13 23:23:27,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2023-02-13 23:23:27,224 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:23:27,477 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:23:27,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:23:27,514 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:23:27,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:23:27,521 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 8 treesize of output 7 [2023-02-13 23:23:27,527 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 12 treesize of output 11 [2023-02-13 23:23:27,533 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 8 treesize of output 7 [2023-02-13 23:23:27,539 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 8 treesize of output 7 [2023-02-13 23:23:27,562 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2023-02-13 23:23:27,566 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:23:27,592 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2023-02-13 23:23:27,597 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:23:27,762 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-13 23:23:27,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 68 [2023-02-13 23:23:27,810 INFO L321 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-02-13 23:23:27,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 12 [2023-02-13 23:23:28,185 INFO L321 Elim1Store]: treesize reduction 23, result has 43.9 percent of original size [2023-02-13 23:23:28,186 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 90 [2023-02-13 23:23:28,211 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:23:28,264 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 12 treesize of output 11 [2023-02-13 23:23:28,284 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 18 [2023-02-13 23:23:28,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-02-13 23:23:28,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 [2023-02-13 23:23:28,486 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:23:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-02-13 23:23:28,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-02-13 23:23:28,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 28 treesize of output 23 [2023-02-13 23:23:28,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:28,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 25 treesize of output 21 [2023-02-13 23:23:28,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 32 treesize of output 27 [2023-02-13 23:23:28,999 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 16 treesize of output 15 [2023-02-13 23:23:29,006 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 16 treesize of output 15 [2023-02-13 23:23:29,264 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-02-13 23:23:29,265 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2023-02-13 23:23:29,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2023-02-13 23:23:29,420 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-13 23:23:29,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 36 [2023-02-13 23:23:29,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2023-02-13 23:23:29,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,437 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-13 23:23:29,698 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2948 Int) (v_ArrVal_2955 (Array Int Int)) (v_ArrVal_2953 (Array Int Int)) (v_ArrVal_2952 (Array Int Int)) (v_ArrVal_2951 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2953) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2951) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2955) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2952)) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| v_ArrVal_2948)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:23:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 55 [2023-02-13 23:23:29,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,766 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2023-02-13 23:23:29,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 78 treesize of output 79 [2023-02-13 23:23:29,775 INFO L350 Elim1Store]: Elim1 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 57 treesize of output 45 [2023-02-13 23:23:29,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:29,807 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-02-13 23:23:29,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 26 treesize of output 37 [2023-02-13 23:23:29,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 14 treesize of output 11 [2023-02-13 23:23:30,069 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-02-13 23:23:30,070 INFO L350 Elim1Store]: Elim1 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 58 treesize of output 33 [2023-02-13 23:23:30,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2023-02-13 23:23:30,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,095 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-13 23:23:30,319 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2957 (Array Int Int)) (v_ArrVal_2966 (Array Int Int)) (v_ArrVal_2963 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_2957 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2957) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2966) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2963)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:23:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,365 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2023-02-13 23:23:30,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 88 [2023-02-13 23:23:30,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 60 [2023-02-13 23:23:30,388 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 10 treesize of output 9 [2023-02-13 23:23:30,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 23 treesize of output 18 [2023-02-13 23:23:30,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:30,405 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-13 23:23:30,405 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 18 [2023-02-13 23:23:31,710 INFO L321 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2023-02-13 23:23:31,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 114 treesize of output 64 [2023-02-13 23:23:31,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:31,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:31,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:31,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:31,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:31,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:31,744 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:23:31,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-02-13 23:23:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 18 refuted. 2 times theorem prover too weak. 4 trivial. 10 not checked. [2023-02-13 23:23:31,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:23:32,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483886463] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:23:32,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:23:32,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 54 [2023-02-13 23:23:32,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145882053] [2023-02-13 23:23:32,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:23:32,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-13 23:23:32,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:23:32,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-13 23:23:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2872, Unknown=4, NotChecked=218, Total=3306 [2023-02-13 23:23:32,513 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand has 54 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 49 states have internal predecessors, (95), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:23:39,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:23:44,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:23:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:23:45,099 INFO L93 Difference]: Finished difference Result 239 states and 289 transitions. [2023-02-13 23:23:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-13 23:23:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 49 states have internal predecessors, (95), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 59 [2023-02-13 23:23:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:23:45,101 INFO L225 Difference]: With dead ends: 239 [2023-02-13 23:23:45,101 INFO L226 Difference]: Without dead ends: 170 [2023-02-13 23:23:45,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=362, Invalid=4324, Unknown=14, NotChecked=270, Total=4970 [2023-02-13 23:23:45,103 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 279 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 101 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-02-13 23:23:45,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 942 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2346 Invalid, 28 Unknown, 330 Unchecked, 8.7s Time] [2023-02-13 23:23:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-13 23:23:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 121. [2023-02-13 23:23:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 104 states have internal predecessors, (116), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-13 23:23:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 145 transitions. [2023-02-13 23:23:45,141 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 145 transitions. Word has length 59 [2023-02-13 23:23:45,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:23:45,141 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 145 transitions. [2023-02-13 23:23:45,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 49 states have internal predecessors, (95), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:23:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2023-02-13 23:23:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-13 23:23:45,142 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:23:45,142 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:23:45,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-13 23:23:45,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-13 23:23:45,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:23:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:23:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1740102043, now seen corresponding path program 1 times [2023-02-13 23:23:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:23:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582813422] [2023-02-13 23:23:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:23:45,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:23:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:23:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:23:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-13 23:23:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-13 23:23:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-13 23:23:50,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:23:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582813422] [2023-02-13 23:23:50,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582813422] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:23:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117644977] [2023-02-13 23:23:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:23:50,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:23:50,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:23:50,678 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:23:50,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-13 23:23:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:23:50,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 190 conjunts are in the unsatisfiable core [2023-02-13 23:23:50,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:23:50,981 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2023-02-13 23:23:50,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 27 [2023-02-13 23:23:51,065 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:23:51,066 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 7 [2023-02-13 23:23:51,243 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:23:51,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:23:51,248 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-02-13 23:23:51,253 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:23:51,286 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-02-13 23:23:51,287 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 42 [2023-02-13 23:23:51,289 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 22 [2023-02-13 23:23:51,474 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-13 23:23:51,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2023-02-13 23:23:51,664 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 53 treesize of output 47 [2023-02-13 23:23:51,674 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:23:51,804 INFO L350 Elim1Store]: Elim1 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 18 treesize of output 10 [2023-02-13 23:23:51,809 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:23:51,809 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:23:52,051 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:23:52,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:23:52,060 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 8 treesize of output 7 [2023-02-13 23:23:52,067 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 12 treesize of output 11 [2023-02-13 23:23:52,118 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 39 [2023-02-13 23:23:52,124 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 35 [2023-02-13 23:23:52,163 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-13 23:23:54,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:54,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:54,466 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 43 treesize of output 36 [2023-02-13 23:23:54,472 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 13 [2023-02-13 23:23:54,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 35 treesize of output 28 [2023-02-13 23:23:54,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:54,504 INFO L321 Elim1Store]: treesize reduction 82, result has 31.7 percent of original size [2023-02-13 23:23:54,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 61 [2023-02-13 23:23:54,771 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-02-13 23:23:54,771 INFO L350 Elim1Store]: Elim1 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 105 treesize of output 44 [2023-02-13 23:23:54,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:54,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-02-13 23:23:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:54,785 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:23:54,785 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 16 treesize of output 10 [2023-02-13 23:23:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 85 [2023-02-13 23:23:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,353 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2023-02-13 23:23:55,354 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 85 treesize of output 68 [2023-02-13 23:23:55,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 65 treesize of output 54 [2023-02-13 23:23:55,370 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 70 treesize of output 55 [2023-02-13 23:23:55,383 INFO L350 Elim1Store]: Elim1 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 46 treesize of output 38 [2023-02-13 23:23:55,392 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 12 treesize of output 11 [2023-02-13 23:23:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,443 INFO L321 Elim1Store]: treesize reduction 108, result has 32.1 percent of original size [2023-02-13 23:23:55,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 77 [2023-02-13 23:23:55,459 INFO L350 Elim1Store]: Elim1 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 12 treesize of output 11 [2023-02-13 23:23:55,828 INFO L321 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2023-02-13 23:23:55,828 INFO L350 Elim1Store]: Elim1 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 189 treesize of output 83 [2023-02-13 23:23:55,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:55,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 106 [2023-02-13 23:23:56,001 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-02-13 23:23:56,001 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 7 new quantified variables, introduced 5 case distinctions, treesize of input 185 treesize of output 58 [2023-02-13 23:23:56,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,012 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-13 23:23:56,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2023-02-13 23:23:56,026 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-13 23:23:56,230 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3409 (Array Int Int)) (v_ArrVal_3410 (Array Int Int)) (v_ArrVal_3411 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3412 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3411) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3409) |c_#memory_$Pointer$.base|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3412) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3410) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:23:56,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,290 INFO L321 Elim1Store]: treesize reduction 100, result has 9.9 percent of original size [2023-02-13 23:23:56,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 220 treesize of output 152 [2023-02-13 23:23:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 120 [2023-02-13 23:23:56,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:56,337 INFO L321 Elim1Store]: treesize reduction 40, result has 52.9 percent of original size [2023-02-13 23:23:56,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 58 treesize of output 60 [2023-02-13 23:23:56,352 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:23:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:23:57,036 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-13 23:23:57,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 84 [2023-02-13 23:23:57,217 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-02-13 23:23:57,217 INFO L350 Elim1Store]: Elim1 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 122 treesize of output 40 [2023-02-13 23:23:57,221 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 19 refuted. 2 times theorem prover too weak. 1 trivial. 6 not checked. [2023-02-13 23:23:57,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:23:57,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117644977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:23:57,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:23:57,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 53 [2023-02-13 23:23:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211519628] [2023-02-13 23:23:57,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:23:57,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-13 23:23:57,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:23:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-13 23:23:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2588, Unknown=8, NotChecked=102, Total=2862 [2023-02-13 23:23:57,457 INFO L87 Difference]: Start difference. First operand 121 states and 145 transitions. Second operand has 53 states, 45 states have (on average 2.088888888888889) internal successors, (94), 47 states have internal predecessors, (94), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:24:01,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:04,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:07,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:09,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:11,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:16,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:20,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:23,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-13 23:24:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:24:27,106 INFO L93 Difference]: Finished difference Result 236 states and 289 transitions. [2023-02-13 23:24:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-13 23:24:27,107 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 45 states have (on average 2.088888888888889) internal successors, (94), 47 states have internal predecessors, (94), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 59 [2023-02-13 23:24:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:24:27,108 INFO L225 Difference]: With dead ends: 236 [2023-02-13 23:24:27,108 INFO L226 Difference]: Without dead ends: 233 [2023-02-13 23:24:27,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=459, Invalid=5524, Unknown=27, NotChecked=152, Total=6162 [2023-02-13 23:24:27,110 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 285 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 5264 mSolverCounterSat, 126 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 5671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 5264 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2023-02-13 23:24:27,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 2671 Invalid, 5671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 5264 Invalid, 35 Unknown, 246 Unchecked, 23.8s Time] [2023-02-13 23:24:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-13 23:24:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 125. [2023-02-13 23:24:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 101 states have (on average 1.198019801980198) internal successors, (121), 108 states have internal predecessors, (121), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-13 23:24:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2023-02-13 23:24:27,155 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 59 [2023-02-13 23:24:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:24:27,155 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2023-02-13 23:24:27,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 45 states have (on average 2.088888888888889) internal successors, (94), 47 states have internal predecessors, (94), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-13 23:24:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2023-02-13 23:24:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-13 23:24:27,156 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:24:27,156 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:24:27,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-13 23:24:27,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-13 23:24:27,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:24:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:24:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1802853032, now seen corresponding path program 1 times [2023-02-13 23:24:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:24:27,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133661155] [2023-02-13 23:24:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:24:27,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:24:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:24:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:24:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-13 23:24:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-13 23:24:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-13 23:24:27,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:24:27,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133661155] [2023-02-13 23:24:27,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133661155] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:24:27,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366111384] [2023-02-13 23:24:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:24:27,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:24:27,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:24:27,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:24:27,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-13 23:24:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:27,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-13 23:24:27,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:24:28,053 INFO L350 Elim1Store]: Elim1 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 17 [2023-02-13 23:24:28,055 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 13 [2023-02-13 23:24:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-13 23:24:28,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:24:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-13 23:24:28,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366111384] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 23:24:28,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 23:24:28,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 12 [2023-02-13 23:24:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682635961] [2023-02-13 23:24:28,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 23:24:28,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-13 23:24:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:24:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-13 23:24:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-13 23:24:28,299 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-13 23:24:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:24:28,858 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2023-02-13 23:24:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-13 23:24:28,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 63 [2023-02-13 23:24:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:24:28,859 INFO L225 Difference]: With dead ends: 152 [2023-02-13 23:24:28,859 INFO L226 Difference]: Without dead ends: 149 [2023-02-13 23:24:28,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-02-13 23:24:28,860 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 72 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-13 23:24:28,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 448 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-13 23:24:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-13 23:24:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-02-13 23:24:28,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 115 states have internal predecessors, (129), 19 states have call successors, (19), 7 states have call predecessors, (19), 5 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-13 23:24:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2023-02-13 23:24:28,899 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 63 [2023-02-13 23:24:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:24:28,899 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2023-02-13 23:24:28,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-13 23:24:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2023-02-13 23:24:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-13 23:24:28,900 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:24:28,900 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 23:24:28,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-13 23:24:29,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-13 23:24:29,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:24:29,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:24:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1473312201, now seen corresponding path program 2 times [2023-02-13 23:24:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:24:29,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862607778] [2023-02-13 23:24:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:24:29,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:24:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-13 23:24:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-13 23:24:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-13 23:24:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-13 23:24:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:24:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-13 23:24:38,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:24:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862607778] [2023-02-13 23:24:38,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862607778] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:24:38,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394952211] [2023-02-13 23:24:38,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 23:24:38,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:24:38,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:24:38,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 23:24:38,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-13 23:24:38,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 23:24:38,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 23:24:38,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 245 conjunts are in the unsatisfiable core [2023-02-13 23:24:38,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:24:38,407 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2023-02-13 23:24:38,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2023-02-13 23:24:38,547 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 10 [2023-02-13 23:24:38,853 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:24:38,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:24:38,885 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-02-13 23:24:38,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-02-13 23:24:38,892 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 8 treesize of output 7 [2023-02-13 23:24:38,901 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 8 treesize of output 7 [2023-02-13 23:24:38,910 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 8 treesize of output 7 [2023-02-13 23:24:38,921 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 12 treesize of output 11 [2023-02-13 23:24:38,968 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 15 [2023-02-13 23:24:38,972 INFO L350 Elim1Store]: Elim1 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 [2023-02-13 23:24:38,994 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2023-02-13 23:24:38,999 INFO L350 Elim1Store]: Elim1 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 9 treesize of output 7 [2023-02-13 23:24:39,307 INFO L321 Elim1Store]: treesize reduction 42, result has 48.8 percent of original size [2023-02-13 23:24:39,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 58 [2023-02-13 23:24:39,595 INFO L350 Elim1Store]: Elim1 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 55 treesize of output 42 [2023-02-13 23:24:39,628 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 18 [2023-02-13 23:24:39,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 51 treesize of output 31 [2023-02-13 23:24:39,797 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 22 [2023-02-13 23:24:39,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-02-13 23:24:40,129 WARN L859 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4127 (Array Int Int)) (v_ArrVal_4128 (Array Int Int))) (and (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_4128 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4128) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_4127 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4127) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse1 |c_chain_node_#in~ppnode#1.base| (store (select .cse1 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2023-02-13 23:24:40,343 INFO L321 Elim1Store]: treesize reduction 153, result has 28.8 percent of original size [2023-02-13 23:24:40,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 133 treesize of output 294 [2023-02-13 23:24:40,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 185 [2023-02-13 23:24:40,724 INFO L321 Elim1Store]: treesize reduction 153, result has 28.8 percent of original size [2023-02-13 23:24:40,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 169 treesize of output 324 [2023-02-13 23:24:40,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 94 treesize of output 78 [2023-02-13 23:24:40,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 261 [2023-02-13 23:24:40,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 35 treesize of output 29 [2023-02-13 23:24:41,251 INFO L321 Elim1Store]: treesize reduction 42, result has 64.4 percent of original size [2023-02-13 23:24:41,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 115 [2023-02-13 23:24:41,564 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-13 23:24:41,829 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 218 treesize of output 318 [2023-02-13 23:24:41,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 318 [2023-02-13 23:24:41,983 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,983 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:41,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 190 treesize of output 143 [2023-02-13 23:24:42,246 INFO L321 Elim1Store]: treesize reduction 148, result has 9.2 percent of original size [2023-02-13 23:24:42,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 338 treesize of output 325 [2023-02-13 23:24:42,547 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:42,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:42,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 28 treesize of output 7 [2023-02-13 23:24:42,642 INFO L350 Elim1Store]: Elim1 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 75 treesize of output 1 [2023-02-13 23:24:43,019 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 86 treesize of output 81 [2023-02-13 23:24:43,099 INFO L321 Elim1Store]: treesize reduction 52, result has 33.3 percent of original size [2023-02-13 23:24:43,100 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 5 case distinctions, treesize of input 415 treesize of output 329 [2023-02-13 23:24:43,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,109 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 342 [2023-02-13 23:24:43,361 INFO L350 Elim1Store]: Elim1 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 7 treesize of output 5 [2023-02-13 23:24:43,421 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 100 treesize of output 103 [2023-02-13 23:24:43,533 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 111 treesize of output 5 [2023-02-13 23:24:43,686 INFO L350 Elim1Store]: Elim1 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 80 treesize of output 70 [2023-02-13 23:24:43,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,913 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:24:43,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 103 treesize of output 15 [2023-02-13 23:24:52,383 WARN L233 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 225 DAG size of output: 165 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-13 23:24:53,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:53,195 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:24:53,196 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 3621 treesize of output 3628 [2023-02-13 23:24:53,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:53,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:24:53,259 INFO L350 Elim1Store]: Elim1 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 4165 treesize of output 3662 [2023-02-13 23:24:53,379 INFO L321 Elim1Store]: treesize reduction 10, result has 86.3 percent of original size [2023-02-13 23:24:53,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 3607 treesize of output 3642 [2023-02-13 23:24:53,454 INFO L350 Elim1Store]: Elim1 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 3579 treesize of output 3565 [2023-02-13 23:24:53,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 16 treesize of output 5 [2023-02-13 23:24:53,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 163 treesize of output 153 [2023-02-13 23:24:53,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 163 treesize of output 153 [2023-02-13 23:24:53,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 16 treesize of output 5 [2023-02-13 23:24:53,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 16 treesize of output 5 [2023-02-13 23:24:53,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 101 treesize of output 97 [2023-02-13 23:24:53,703 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-13 23:24:53,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 163 treesize of output 153 [2023-02-13 23:24:53,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 16 treesize of output 5 [2023-02-13 23:24:54,553 INFO L350 Elim1Store]: Elim1 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 447 treesize of output 431 [2023-02-13 23:24:55,146 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-13 23:24:55,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,900 INFO L321 Elim1Store]: treesize reduction 70, result has 30.0 percent of original size [2023-02-13 23:24:55,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6634 treesize of output 6643 [2023-02-13 23:24:55,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:56,053 INFO L321 Elim1Store]: treesize reduction 42, result has 30.0 percent of original size [2023-02-13 23:24:56,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 7188 treesize of output 6466 [2023-02-13 23:24:56,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:56,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:56,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:24:56,217 INFO L321 Elim1Store]: treesize reduction 114, result has 24.5 percent of original size [2023-02-13 23:24:56,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 6414 treesize of output 6427