./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum_array-2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/loops/sum_array-2-2.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 0cf9175e436d0e00a51b884dabf87739d3176e3315a908e56fcba99730a10796 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:57:28,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:57:28,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:57:28,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:57:28,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:57:28,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:57:28,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:57:28,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:57:28,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:57:28,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:57:28,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:57:28,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:57:28,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:57:28,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:57:28,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:57:28,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:57:28,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:57:28,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:57:28,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:57:28,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:57:28,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:57:28,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:57:28,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:57:28,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:57:28,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:57:28,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:57:28,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:57:28,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:57:28,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:57:28,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:57:28,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:57:28,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:57:28,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:57:28,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:57:28,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:57:28,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:57:28,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:57:28,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:57:28,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:57:28,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:57:28,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:57:28,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:57:28,618 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:57:28,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:57:28,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:57:28,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:57:28,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:57:28,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:57:28,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:57:28,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:57:28,620 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:57:28,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:57:28,621 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:57:28,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:57:28,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:57:28,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:57:28,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:57:28,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:57:28,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:57:28,622 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:57:28,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:57:28,622 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:57:28,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:57:28,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:57:28,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:57:28,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:57:28,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:57:28,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:57:28,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:57:28,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:57:28,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:57:28,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:57:28,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:57:28,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:57:28,625 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:57:28,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:57:28,625 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:57:28,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf9175e436d0e00a51b884dabf87739d3176e3315a908e56fcba99730a10796 [2023-02-15 10:57:28,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:57:28,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:57:28,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:57:28,846 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:57:28,847 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:57:28,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-2-2.i [2023-02-15 10:57:29,754 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:57:29,934 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:57:29,935 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2-2.i [2023-02-15 10:57:29,939 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/681464b2d/4317c108fefa43c4a23d1fa54d5f5e03/FLAGc21e54d12 [2023-02-15 10:57:29,948 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/681464b2d/4317c108fefa43c4a23d1fa54d5f5e03 [2023-02-15 10:57:29,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:57:29,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:57:29,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:57:29,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:57:29,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:57:29,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:57:29" (1/1) ... [2023-02-15 10:57:29,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1025e9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:29, skipping insertion in model container [2023-02-15 10:57:29,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:57:29" (1/1) ... [2023-02-15 10:57:29,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:57:29,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:57:30,061 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/loops/sum_array-2-2.i[940,953] [2023-02-15 10:57:30,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:57:30,076 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:57:30,084 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/loops/sum_array-2-2.i[940,953] [2023-02-15 10:57:30,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:57:30,101 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:57:30,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30 WrapperNode [2023-02-15 10:57:30,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:57:30,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:57:30,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:57:30,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:57:30,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,125 INFO L138 Inliner]: procedures = 18, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2023-02-15 10:57:30,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:57:30,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:57:30,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:57:30,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:57:30,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:57:30,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:57:30,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:57:30,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:57:30,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (1/1) ... [2023-02-15 10:57:30,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:57:30,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:57:30,185 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) [2023-02-15 10:57:30,186 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 [2023-02-15 10:57:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:57:30,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:57:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:57:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:57:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:57:30,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:57:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:57:30,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:57:30,253 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:57:30,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:57:30,444 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:57:30,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:57:30,453 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 10:57:30,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:57:30 BoogieIcfgContainer [2023-02-15 10:57:30,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:57:30,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:57:30,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:57:30,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:57:30,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:57:29" (1/3) ... [2023-02-15 10:57:30,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6542ae74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:57:30, skipping insertion in model container [2023-02-15 10:57:30,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:57:30" (2/3) ... [2023-02-15 10:57:30,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6542ae74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:57:30, skipping insertion in model container [2023-02-15 10:57:30,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:57:30" (3/3) ... [2023-02-15 10:57:30,466 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array-2-2.i [2023-02-15 10:57:30,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:57:30,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:57:30,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:57:30,514 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;@3d3d4256, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:57:30,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:57:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:57:30,525 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:57:30,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:57:30,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:57:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:57:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -385982491, now seen corresponding path program 1 times [2023-02-15 10:57:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:57:30,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461754507] [2023-02-15 10:57:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:57:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:57:30,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:57:30,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461754507] [2023-02-15 10:57:30,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461754507] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:57:30,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:57:30,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:57:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081762055] [2023-02-15 10:57:30,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:57:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:57:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:57:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:57:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:57:30,727 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.625) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:57:30,738 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2023-02-15 10:57:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:57:30,739 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 10:57:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:57:30,744 INFO L225 Difference]: With dead ends: 45 [2023-02-15 10:57:30,744 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 10:57:30,746 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 [2023-02-15 10:57:30,749 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2023-02-15 10:57:30,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:57:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 10:57:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 10:57:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-02-15 10:57:30,772 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2023-02-15 10:57:30,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:57:30,772 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-02-15 10:57:30,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-02-15 10:57:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 10:57:30,773 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:57:30,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:57:30,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:57:30,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:57:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:57:30,774 INFO L85 PathProgramCache]: Analyzing trace with hash -391523617, now seen corresponding path program 1 times [2023-02-15 10:57:30,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:57:30,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270676427] [2023-02-15 10:57:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:57:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:57:31,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:57:31,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270676427] [2023-02-15 10:57:31,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270676427] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:57:31,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:57:31,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:57:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592397405] [2023-02-15 10:57:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:57:31,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:57:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:57:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:57:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:57:31,022 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:57:31,122 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-02-15 10:57:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:57:31,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 10:57:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:57:31,124 INFO L225 Difference]: With dead ends: 58 [2023-02-15 10:57:31,124 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 10:57:31,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:57:31,129 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:57:31,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:57:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 10:57:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2023-02-15 10:57:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-02-15 10:57:31,135 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2023-02-15 10:57:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:57:31,135 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-02-15 10:57:31,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-02-15 10:57:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 10:57:31,136 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:57:31,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:57:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:57:31,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:57:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:57:31,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1083884881, now seen corresponding path program 1 times [2023-02-15 10:57:31,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:57:31,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927539922] [2023-02-15 10:57:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:31,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:57:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:57:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:57:32,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927539922] [2023-02-15 10:57:32,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927539922] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:57:32,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135355042] [2023-02-15 10:57:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:32,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:57:32,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:57:32,710 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) [2023-02-15 10:57:32,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:57:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:32,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-15 10:57:32,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:57:32,821 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 [2023-02-15 10:57:32,926 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:32,927 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 1 case distinctions, treesize of input 21 treesize of output 24 [2023-02-15 10:57:33,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:33,010 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 38 [2023-02-15 10:57:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:57:33,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:57:33,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:33,180 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 199 [2023-02-15 10:57:33,900 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:33,903 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:33,905 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:33,909 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:33,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:33,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 249 treesize of output 249 [2023-02-15 10:57:34,240 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,258 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,262 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,264 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,267 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,271 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,272 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,275 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,278 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,281 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,284 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,286 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,291 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 56 treesize of output 54 [2023-02-15 10:57:34,308 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:57:34,308 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 182 treesize of output 1 [2023-02-15 10:57:34,311 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,323 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 10:57:34,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 605 treesize of output 1 [2023-02-15 10:57:34,327 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,336 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 10:57:34,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 483 treesize of output 1 [2023-02-15 10:57:34,339 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:34,354 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 10:57:34,354 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 186 treesize of output 1 [2023-02-15 10:57:34,364 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 10:57:34,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 312 treesize of output 1 [2023-02-15 10:57:34,494 INFO L321 Elim1Store]: treesize reduction 17, result has 85.0 percent of original size [2023-02-15 10:57:34,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 392 [2023-02-15 10:57:41,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:41,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 420 treesize of output 380 [2023-02-15 10:57:44,653 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:44,656 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:44,689 INFO L321 Elim1Store]: treesize reduction 86, result has 23.9 percent of original size [2023-02-15 10:57:44,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 420 treesize of output 294 [2023-02-15 10:57:44,790 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:44,805 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:44,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2023-02-15 10:57:44,818 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:44,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 1 [2023-02-15 10:57:44,828 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:44,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2023-02-15 10:57:44,836 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:44,844 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:44,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2023-02-15 10:57:44,856 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:44,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2023-02-15 10:57:44,858 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:44,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:44,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 238 treesize of output 236 [2023-02-15 10:57:45,851 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,854 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,857 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,860 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,862 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,868 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,870 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,881 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:45,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 1 [2023-02-15 10:57:45,889 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:45,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2023-02-15 10:57:45,896 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:45,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2023-02-15 10:57:45,910 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,920 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:45,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2023-02-15 10:57:45,928 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:45,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2023-02-15 10:57:45,941 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:45,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 1 [2023-02-15 10:57:45,944 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:45,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:45,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 133 [2023-02-15 10:57:46,183 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,185 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,189 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,191 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:46,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 241 [2023-02-15 10:57:46,912 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,915 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,917 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,919 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,921 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,922 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,925 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,946 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,950 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,954 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,956 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,957 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,959 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,961 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,962 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,964 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,972 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,973 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,975 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,976 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,984 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-15 10:57:46,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 475 treesize of output 1 [2023-02-15 10:57:46,989 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,992 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,993 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,995 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:46,999 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,005 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-15 10:57:47,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 605 treesize of output 1 [2023-02-15 10:57:47,010 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-02-15 10:57:47,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 1 [2023-02-15 10:57:47,020 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-02-15 10:57:47,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 182 treesize of output 1 [2023-02-15 10:57:47,023 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,031 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-15 10:57:47,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 312 treesize of output 1 [2023-02-15 10:57:47,036 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-02-15 10:57:47,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 1 [2023-02-15 10:57:47,039 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,052 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:47,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 475 treesize of output 1 [2023-02-15 10:57:47,055 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,058 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,060 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,064 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,073 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,081 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:47,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 605 treesize of output 1 [2023-02-15 10:57:47,090 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:47,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 312 treesize of output 1 [2023-02-15 10:57:47,099 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:47,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 182 treesize of output 1 [2023-02-15 10:57:47,101 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,108 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:47,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 1 [2023-02-15 10:57:47,115 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2023-02-15 10:57:47,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 1 [2023-02-15 10:57:47,117 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,130 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,132 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,134 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,136 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,137 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,140 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,141 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,144 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,146 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,147 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,153 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,156 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,158 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,163 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,164 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,166 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,168 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,170 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,172 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,173 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,174 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,179 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:47,179 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 104 treesize of output 1 [2023-02-15 10:57:47,181 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,186 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:47,187 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 196 treesize of output 1 [2023-02-15 10:57:47,189 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:47,193 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:47,194 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 104 treesize of output 1 [2023-02-15 10:57:47,198 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:47,198 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 38 treesize of output 1 [2023-02-15 10:57:47,202 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:47,203 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 169 treesize of output 1 [2023-02-15 10:57:47,207 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:47,207 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 261 treesize of output 1 [2023-02-15 10:57:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:57:47,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135355042] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:57:47,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:57:47,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-02-15 10:57:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046114963] [2023-02-15 10:57:47,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:57:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 10:57:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:57:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 10:57:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-02-15 10:57:47,300 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:57:47,607 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-02-15 10:57:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:57:47,607 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-15 10:57:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:57:47,608 INFO L225 Difference]: With dead ends: 39 [2023-02-15 10:57:47,608 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 10:57:47,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-02-15 10:57:47,609 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 98 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:57:47,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 57 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:57:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 10:57:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-02-15 10:57:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-15 10:57:47,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2023-02-15 10:57:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:57:47,613 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-15 10:57:47,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-15 10:57:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 10:57:47,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:57:47,613 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:57:47,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:57:47,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:57:47,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:57:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:57:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash -924768315, now seen corresponding path program 1 times [2023-02-15 10:57:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:57:47,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860314018] [2023-02-15 10:57:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:57:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:57:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:57:47,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860314018] [2023-02-15 10:57:47,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860314018] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:57:47,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284898419] [2023-02-15 10:57:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:47,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:57:47,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:57:47,971 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) [2023-02-15 10:57:47,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:57:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:48,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 10:57:48,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:57:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:57:48,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:57:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:57:48,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284898419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:57:48,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:57:48,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-02-15 10:57:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257157742] [2023-02-15 10:57:48,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:57:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 10:57:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:57:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 10:57:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:57:48,218 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:57:48,365 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2023-02-15 10:57:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 10:57:48,365 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-15 10:57:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:57:48,366 INFO L225 Difference]: With dead ends: 85 [2023-02-15 10:57:48,366 INFO L226 Difference]: Without dead ends: 52 [2023-02-15 10:57:48,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:57:48,367 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:57:48,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 93 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:57:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-15 10:57:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 37. [2023-02-15 10:57:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-02-15 10:57:48,371 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 26 [2023-02-15 10:57:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:57:48,372 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-02-15 10:57:48,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:57:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-02-15 10:57:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 10:57:48,372 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:57:48,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:57:48,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:57:48,577 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,SelfDestructingSolverStorable3 [2023-02-15 10:57:48,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:57:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:57:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash 279637269, now seen corresponding path program 2 times [2023-02-15 10:57:48,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:57:48,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026949304] [2023-02-15 10:57:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:57:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:57:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:57:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:57:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:57:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026949304] [2023-02-15 10:57:50,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026949304] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:57:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641723139] [2023-02-15 10:57:50,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 10:57:50,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:57:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:57:50,800 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) [2023-02-15 10:57:50,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:57:50,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 10:57:50,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:57:50,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 10:57:50,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:57:50,884 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 [2023-02-15 10:57:51,037 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:51,038 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 1 case distinctions, treesize of input 27 treesize of output 30 [2023-02-15 10:57:51,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,186 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 38 [2023-02-15 10:57:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 10:57:51,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:57:51,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,413 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 223 [2023-02-15 10:57:51,672 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,680 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 71 treesize of output 64 [2023-02-15 10:57:51,694 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2023-02-15 10:57:51,695 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 170 treesize of output 130 [2023-02-15 10:57:51,703 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,704 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,713 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-15 10:57:51,714 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 116 treesize of output 91 [2023-02-15 10:57:51,721 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:51,721 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 214 treesize of output 1 [2023-02-15 10:57:51,726 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:51,728 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 44 treesize of output 1 [2023-02-15 10:57:51,737 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:51,737 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 116 treesize of output 1 [2023-02-15 10:57:51,739 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,747 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:51,747 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 285 treesize of output 1 [2023-02-15 10:57:51,749 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,756 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:57:51,756 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 187 treesize of output 1 [2023-02-15 10:57:51,761 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,764 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,765 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,767 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,774 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 125 treesize of output 94 [2023-02-15 10:57:51,779 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,787 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 47 treesize of output 34 [2023-02-15 10:57:51,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,797 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 185 treesize of output 136 [2023-02-15 10:57:51,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,807 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 309 treesize of output 229 [2023-02-15 10:57:51,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:51,818 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 77 treesize of output 55 [2023-02-15 10:57:51,821 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,822 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:51,824 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:52,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:52,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 484 treesize of output 412 [2023-02-15 10:57:56,456 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:56,462 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:56,529 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2023-02-15 10:57:56,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 223 [2023-02-15 10:57:56,839 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:56,842 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:56,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:56,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 203 [2023-02-15 10:57:57,414 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:57,423 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:57,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 374 treesize of output 1 [2023-02-15 10:57:57,440 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:57,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:57:57,452 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:57,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-15 10:57:57,471 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:57,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2023-02-15 10:57:57,480 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:57,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-15 10:57:57,491 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:57,494 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:57,529 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:57,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 264 treesize of output 236 [2023-02-15 10:57:58,173 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,175 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,177 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,178 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,179 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,186 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,189 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,194 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,203 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:58,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:57:58,206 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,209 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:58,218 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:58,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-15 10:57:58,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:58,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 264 treesize of output 236 [2023-02-15 10:57:59,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:57:59,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 281 treesize of output 241 [2023-02-15 10:57:59,589 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,590 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,591 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,594 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,595 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,611 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,613 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,615 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,616 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,618 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,650 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,652 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,653 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,655 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,663 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:57:59,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 1 [2023-02-15 10:57:59,670 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:57:59,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 1 [2023-02-15 10:57:59,672 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,673 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,680 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:57:59,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2023-02-15 10:57:59,686 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:57:59,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-15 10:57:59,692 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:57:59,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 1 [2023-02-15 10:57:59,695 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,702 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:57:59,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-15 10:57:59,707 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,709 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,712 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,714 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,716 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,717 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,719 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,737 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,739 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,741 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,747 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,749 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,757 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,759 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,763 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,770 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:59,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:57:59,773 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,774 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,776 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,778 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,787 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 374 treesize of output 1 [2023-02-15 10:57:59,794 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:59,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:57:59,800 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:59,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-15 10:57:59,808 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:59,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2023-02-15 10:57:59,816 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:57:59,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-15 10:57:59,819 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,820 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,822 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,823 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,824 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,826 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,827 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,844 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,849 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,850 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,851 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,853 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,857 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,858 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,861 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,862 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,863 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,864 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,867 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,869 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,875 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,878 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,886 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-15 10:57:59,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 719 treesize of output 1 [2023-02-15 10:57:59,888 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,891 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,895 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:57:59,901 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-15 10:57:59,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:58:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 10:58:00,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641723139] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:58:00,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:58:00,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 28 [2023-02-15 10:58:00,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009521642] [2023-02-15 10:58:00,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:58:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 10:58:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:58:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 10:58:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-02-15 10:58:00,079 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:58:00,845 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-02-15 10:58:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 10:58:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-15 10:58:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:58:00,846 INFO L225 Difference]: With dead ends: 53 [2023-02-15 10:58:00,846 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 10:58:00,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 10:58:00,847 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 53 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:58:00,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 101 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 10:58:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 10:58:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2023-02-15 10:58:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-02-15 10:58:00,853 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 36 [2023-02-15 10:58:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:58:00,853 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-02-15 10:58:00,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.3214285714285716) internal successors, (93), 28 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-02-15 10:58:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 10:58:00,854 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:58:00,854 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:58:00,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:58:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:58:01,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:58:01,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:58:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1046792405, now seen corresponding path program 3 times [2023-02-15 10:58:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:58:01,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4792124] [2023-02-15 10:58:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:58:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:58:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:58:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 10:58:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:58:01,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4792124] [2023-02-15 10:58:01,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4792124] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:58:01,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915967531] [2023-02-15 10:58:01,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 10:58:01,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:58:01,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:58:01,263 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) [2023-02-15 10:58:01,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 10:58:01,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 10:58:01,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:58:01,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 10:58:01,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:58:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 10:58:01,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:58:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 10:58:01,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915967531] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:58:01,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:58:01,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2023-02-15 10:58:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724661031] [2023-02-15 10:58:01,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:58:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 10:58:01,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:58:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 10:58:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-02-15 10:58:01,553 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:01,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:58:01,761 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2023-02-15 10:58:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:58:01,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-02-15 10:58:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:58:01,762 INFO L225 Difference]: With dead ends: 115 [2023-02-15 10:58:01,762 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 10:58:01,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-02-15 10:58:01,763 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 68 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:58:01,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 153 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:58:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 10:58:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 51. [2023-02-15 10:58:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-02-15 10:58:01,771 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 40 [2023-02-15 10:58:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:58:01,772 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-02-15 10:58:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-02-15 10:58:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 10:58:01,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:58:01,775 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:58:01,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 10:58:01,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:58:01,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:58:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:58:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1454597637, now seen corresponding path program 4 times [2023-02-15 10:58:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:58:01,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39109309] [2023-02-15 10:58:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:58:01,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:58:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:58:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:58:04,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:58:04,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39109309] [2023-02-15 10:58:04,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39109309] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:58:04,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179828137] [2023-02-15 10:58:04,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 10:58:04,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:58:04,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:58:04,312 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) [2023-02-15 10:58:04,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 10:58:04,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 10:58:04,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 10:58:04,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 10:58:04,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:58:04,398 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 [2023-02-15 10:58:04,657 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:58:04,658 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 1 case distinctions, treesize of input 27 treesize of output 30 [2023-02-15 10:58:04,846 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:04,847 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 38 [2023-02-15 10:58:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:58:04,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:58:05,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:05,133 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 223 [2023-02-15 10:58:05,690 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-15 10:58:05,690 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 116 treesize of output 95 [2023-02-15 10:58:05,700 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-15 10:58:05,700 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 214 treesize of output 169 [2023-02-15 10:58:05,713 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:05,713 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 71 treesize of output 64 [2023-02-15 10:58:05,725 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-15 10:58:05,725 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 116 treesize of output 91 [2023-02-15 10:58:05,736 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:58:05,736 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 44 treesize of output 1 [2023-02-15 10:58:05,743 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:58:05,743 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 187 treesize of output 1 [2023-02-15 10:58:05,744 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,746 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,747 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,757 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:58:05,757 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 285 treesize of output 1 [2023-02-15 10:58:05,765 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2023-02-15 10:58:05,765 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 241 treesize of output 185 [2023-02-15 10:58:05,779 INFO L321 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2023-02-15 10:58:05,779 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 170 treesize of output 130 [2023-02-15 10:58:05,789 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-15 10:58:05,789 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 214 treesize of output 1 [2023-02-15 10:58:05,794 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,795 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,797 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:05,803 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 232 treesize of output 170 [2023-02-15 10:58:05,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:05,812 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 77 treesize of output 55 [2023-02-15 10:58:05,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:05,817 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 125 treesize of output 90 [2023-02-15 10:58:05,820 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,821 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,822 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,824 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,826 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,827 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,828 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:05,934 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2023-02-15 10:58:05,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 514 [2023-02-15 10:58:06,594 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:06,602 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:06,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 1 [2023-02-15 10:58:06,609 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:06,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-15 10:58:06,615 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:06,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-15 10:58:06,617 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:06,624 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:06,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-15 10:58:06,626 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:06,657 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2023-02-15 10:58:06,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 484 treesize of output 312 [2023-02-15 10:58:06,843 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:06,852 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:06,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2023-02-15 10:58:06,854 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:06,856 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:06,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:06,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 277 [2023-02-15 10:58:07,393 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,395 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,396 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,398 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,400 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,402 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,403 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,405 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,407 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,409 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,411 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,413 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,418 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,419 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,420 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,422 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,430 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:58:07,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-15 10:58:07,431 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,439 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:58:07,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 1 [2023-02-15 10:58:07,447 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:58:07,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 1 [2023-02-15 10:58:07,455 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:58:07,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 1 [2023-02-15 10:58:07,457 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,458 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,465 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:58:07,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 1 [2023-02-15 10:58:07,471 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2023-02-15 10:58:07,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2023-02-15 10:58:07,474 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,476 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,477 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,478 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,485 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,487 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,489 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,492 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,493 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,493 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,495 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,496 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,498 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:07,567 INFO L321 Elim1Store]: treesize reduction 17, result has 86.0 percent of original size [2023-02-15 10:58:07,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 703 treesize of output 514 [2023-02-15 10:58:09,022 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:09,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 1 [2023-02-15 10:58:09,030 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:09,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 549 treesize of output 1 [2023-02-15 10:58:09,035 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:09,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-15 10:58:09,042 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:09,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-15 10:58:09,068 INFO L321 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2023-02-15 10:58:09,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 103 [2023-02-15 10:58:09,085 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:09,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 212 treesize of output 1 [2023-02-15 10:58:09,122 INFO L321 Elim1Store]: treesize reduction 80, result has 33.9 percent of original size [2023-02-15 10:58:09,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 322 treesize of output 234 [2023-02-15 10:58:09,348 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-02-15 10:58:09,616 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:09,617 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:09,626 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:09,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 366 treesize of output 1 [2023-02-15 10:58:09,630 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:09,632 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:09,664 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:58:09,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 277 [2023-02-15 10:58:10,346 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,348 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,349 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,351 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,352 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,354 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,355 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,357 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,370 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,372 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,374 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,375 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,396 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-15 10:58:10,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 719 treesize of output 1 [2023-02-15 10:58:10,397 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,399 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,401 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,404 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,409 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-15 10:58:10,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:58:10,410 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,415 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-15 10:58:10,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 1 [2023-02-15 10:58:10,420 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-15 10:58:10,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:58:10,426 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-15 10:58:10,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 565 treesize of output 1 [2023-02-15 10:58:10,432 INFO L321 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2023-02-15 10:58:10,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 374 treesize of output 1 [2023-02-15 10:58:10,434 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,437 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,438 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,440 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,443 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,445 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,451 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,452 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,453 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,455 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,456 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,458 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,459 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,461 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,462 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,463 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,464 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,466 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,473 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,477 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,480 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,485 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,488 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,493 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,494 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,495 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,496 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,497 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,500 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,502 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,503 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,505 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,506 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,507 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,509 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,518 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:10,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 374 treesize of output 1 [2023-02-15 10:58:10,526 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:10,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 1 [2023-02-15 10:58:10,533 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:10,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:58:10,535 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,543 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:10,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 719 treesize of output 1 [2023-02-15 10:58:10,550 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:10,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 1 [2023-02-15 10:58:10,557 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-15 10:58:10,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 565 treesize of output 1 [2023-02-15 10:58:10,563 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,565 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,568 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,571 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,574 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-15 10:58:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 10:58:10,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179828137] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:58:10,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:58:10,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 38 [2023-02-15 10:58:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210028154] [2023-02-15 10:58:10,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:58:10,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 10:58:10,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:58:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 10:58:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 10:58:10,858 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:11,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:58:11,981 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-02-15 10:58:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 10:58:11,981 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-02-15 10:58:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:58:11,982 INFO L225 Difference]: With dead ends: 67 [2023-02-15 10:58:11,982 INFO L226 Difference]: Without dead ends: 65 [2023-02-15 10:58:11,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=440, Invalid=2110, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 10:58:11,983 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 102 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:58:11,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 241 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 10:58:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-15 10:58:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2023-02-15 10:58:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2023-02-15 10:58:11,990 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 50 [2023-02-15 10:58:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:58:11,990 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2023-02-15 10:58:11,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 38 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:58:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2023-02-15 10:58:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 10:58:11,990 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:58:11,990 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:58:12,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 10:58:12,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:58:12,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:58:12,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:58:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1506803439, now seen corresponding path program 5 times [2023-02-15 10:58:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:58:12,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576786023] [2023-02-15 10:58:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:58:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:58:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:58:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 10:58:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:58:12,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576786023] [2023-02-15 10:58:12,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576786023] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:58:12,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559474791] [2023-02-15 10:58:12,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 10:58:12,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:58:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:58:12,399 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) [2023-02-15 10:58:12,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process