./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep40-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/sep40-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f09ee736f3dbb8dbc36f75a04671608fd1c3014086677159a28111a32a84bd34 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 10:23:44,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 10:23:44,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 10:23:44,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 10:23:44,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 10:23:44,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 10:23:44,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 10:23:44,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 10:23:44,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 10:23:44,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 10:23:44,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 10:23:44,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 10:23:44,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 10:23:44,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 10:23:44,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 10:23:44,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 10:23:44,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 10:23:44,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 10:23:44,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 10:23:44,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 10:23:44,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 10:23:44,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 10:23:44,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 10:23:44,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 10:23:44,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 10:23:44,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 10:23:44,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 10:23:44,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 10:23:44,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 10:23:44,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 10:23:44,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 10:23:44,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 10:23:44,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 10:23:44,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 10:23:44,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 10:23:44,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 10:23:44,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 10:23:44,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 10:23:44,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 10:23:44,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 10:23:44,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 10:23:44,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 10:23:44,896 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 10:23:44,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 10:23:44,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 10:23:44,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 10:23:44,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 10:23:44,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 10:23:44,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 10:23:44,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 10:23:44,899 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 10:23:44,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 10:23:44,899 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 10:23:44,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 10:23:44,901 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 10:23:44,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 10:23:44,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 10:23:44,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 10:23:44,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 10:23:44,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 10:23:44,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 10:23:44,902 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 10:23:44,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 10:23:44,903 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 10:23:44,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f09ee736f3dbb8dbc36f75a04671608fd1c3014086677159a28111a32a84bd34 [2023-02-18 10:23:45,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 10:23:45,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 10:23:45,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 10:23:45,103 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 10:23:45,104 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 10:23:45,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep40-1.i [2023-02-18 10:23:46,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 10:23:46,252 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 10:23:46,252 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep40-1.i [2023-02-18 10:23:46,256 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e82d00f0/12ac0320b7354de797ddd158aefbee3a/FLAG0b43c446f [2023-02-18 10:23:46,265 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e82d00f0/12ac0320b7354de797ddd158aefbee3a [2023-02-18 10:23:46,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 10:23:46,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 10:23:46,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 10:23:46,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 10:23:46,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 10:23:46,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a205d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46, skipping insertion in model container [2023-02-18 10:23:46,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 10:23:46,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 10:23:46,454 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/reducercommutativity/sep40-1.i[1293,1306] [2023-02-18 10:23:46,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 10:23:46,463 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 10:23:46,477 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/reducercommutativity/sep40-1.i[1293,1306] [2023-02-18 10:23:46,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 10:23:46,486 INFO L208 MainTranslator]: Completed translation [2023-02-18 10:23:46,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46 WrapperNode [2023-02-18 10:23:46,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 10:23:46,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 10:23:46,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 10:23:46,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 10:23:46,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,506 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-02-18 10:23:46,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 10:23:46,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 10:23:46,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 10:23:46,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 10:23:46,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,521 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 10:23:46,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 10:23:46,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 10:23:46,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 10:23:46,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (1/1) ... [2023-02-18 10:23:46,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 10:23:46,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:46,549 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) [2023-02-18 10:23:46,551 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 [2023-02-18 10:23:46,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 10:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 10:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 10:23:46,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 10:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 10:23:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 10:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 10:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 10:23:46,591 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2023-02-18 10:23:46,591 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2023-02-18 10:23:46,660 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 10:23:46,662 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 10:23:46,741 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 10:23:46,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 10:23:46,745 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 10:23:46,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:23:46 BoogieIcfgContainer [2023-02-18 10:23:46,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 10:23:46,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 10:23:46,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 10:23:46,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 10:23:46,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 10:23:46" (1/3) ... [2023-02-18 10:23:46,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cc652f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:23:46, skipping insertion in model container [2023-02-18 10:23:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:23:46" (2/3) ... [2023-02-18 10:23:46,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cc652f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:23:46, skipping insertion in model container [2023-02-18 10:23:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:23:46" (3/3) ... [2023-02-18 10:23:46,752 INFO L112 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2023-02-18 10:23:46,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 10:23:46,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 10:23:46,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 10:23:46,831 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;@46283f70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 10:23:46,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 10:23:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 10:23:46,840 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:46,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:46,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1312709850, now seen corresponding path program 1 times [2023-02-18 10:23:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:46,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798005243] [2023-02-18 10:23:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:46,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 10:23:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 10:23:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-18 10:23:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 10:23:47,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:47,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798005243] [2023-02-18 10:23:47,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798005243] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 10:23:47,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 10:23:47,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 10:23:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214604499] [2023-02-18 10:23:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 10:23:47,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 10:23:47,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 10:23:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 10:23:47,048 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 10:23:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:47,073 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2023-02-18 10:23:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 10:23:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-18 10:23:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:47,080 INFO L225 Difference]: With dead ends: 52 [2023-02-18 10:23:47,080 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 10:23:47,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 10:23:47,084 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:47,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 10:23:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-18 10:23:47,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-02-18 10:23:47,108 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2023-02-18 10:23:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:47,108 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-02-18 10:23:47,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 10:23:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-02-18 10:23:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 10:23:47,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:47,110 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:47,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 10:23:47,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1845794557, now seen corresponding path program 1 times [2023-02-18 10:23:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:47,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869550876] [2023-02-18 10:23:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 10:23:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 10:23:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-18 10:23:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 10:23:47,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869550876] [2023-02-18 10:23:47,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869550876] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917119680] [2023-02-18 10:23:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:47,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:47,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:47,226 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) [2023-02-18 10:23:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 10:23:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 10:23:47,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 10:23:47,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 10:23:47,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917119680] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 10:23:47,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 10:23:47,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-18 10:23:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122638638] [2023-02-18 10:23:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 10:23:47,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 10:23:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 10:23:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 10:23:47,365 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 10:23:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:47,379 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2023-02-18 10:23:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 10:23:47,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-02-18 10:23:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:47,381 INFO L225 Difference]: With dead ends: 45 [2023-02-18 10:23:47,381 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 10:23:47,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 10:23:47,383 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:47,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 10:23:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-02-18 10:23:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-02-18 10:23:47,394 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2023-02-18 10:23:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:47,394 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-02-18 10:23:47,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 10:23:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-02-18 10:23:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 10:23:47,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:47,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:47,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 10:23:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:47,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -701057785, now seen corresponding path program 1 times [2023-02-18 10:23:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:47,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706299501] [2023-02-18 10:23:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 10:23:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-18 10:23:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-18 10:23:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 10:23:47,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:47,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706299501] [2023-02-18 10:23:47,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706299501] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:47,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14488801] [2023-02-18 10:23:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:47,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:47,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:47,768 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) [2023-02-18 10:23:47,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 10:23:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:47,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 10:23:47,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 10:23:47,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 10:23:47,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14488801] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 10:23:47,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 10:23:47,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-02-18 10:23:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289607285] [2023-02-18 10:23:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 10:23:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 10:23:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 10:23:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 10:23:47,832 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 10:23:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:47,839 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-02-18 10:23:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 10:23:47,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-02-18 10:23:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:47,840 INFO L225 Difference]: With dead ends: 41 [2023-02-18 10:23:47,840 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 10:23:47,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 10:23:47,841 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:47,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 10:23:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-02-18 10:23:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-02-18 10:23:47,844 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 39 [2023-02-18 10:23:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:47,845 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-02-18 10:23:47,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 10:23:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-02-18 10:23:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 10:23:47,846 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:47,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:47,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 10:23:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-18 10:23:48,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash -235909079, now seen corresponding path program 1 times [2023-02-18 10:23:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:48,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90690806] [2023-02-18 10:23:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:48,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 10:23:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-18 10:23:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-18 10:23:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 10:23:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90690806] [2023-02-18 10:23:48,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90690806] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:48,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940204308] [2023-02-18 10:23:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:48,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:48,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:48,181 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) [2023-02-18 10:23:48,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 10:23:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 10:23:48,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-18 10:23:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-18 10:23:48,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940204308] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:48,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:48,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2023-02-18 10:23:48,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839562232] [2023-02-18 10:23:48,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:48,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 10:23:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:48,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 10:23:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 10:23:48,283 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 10:23:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:48,319 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2023-02-18 10:23:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 10:23:48,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2023-02-18 10:23:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:48,321 INFO L225 Difference]: With dead ends: 58 [2023-02-18 10:23:48,321 INFO L226 Difference]: Without dead ends: 37 [2023-02-18 10:23:48,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 10:23:48,323 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:48,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-18 10:23:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-02-18 10:23:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-02-18 10:23:48,328 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 41 [2023-02-18 10:23:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:48,328 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-02-18 10:23:48,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 10:23:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-02-18 10:23:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-18 10:23:48,332 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:48,332 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:48,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:48,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:48,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:48,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1946429025, now seen corresponding path program 2 times [2023-02-18 10:23:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:48,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895145240] [2023-02-18 10:23:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-18 10:23:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-18 10:23:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-02-18 10:23:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-02-18 10:23:48,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:48,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895145240] [2023-02-18 10:23:48,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895145240] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:48,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259075987] [2023-02-18 10:23:48,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 10:23:48,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:48,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:48,642 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) [2023-02-18 10:23:48,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 10:23:48,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 10:23:48,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:48,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 10:23:48,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-02-18 10:23:48,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-02-18 10:23:48,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259075987] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:48,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:48,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-02-18 10:23:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992396626] [2023-02-18 10:23:48,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 10:23:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 10:23:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-18 10:23:48,778 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-18 10:23:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:48,811 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2023-02-18 10:23:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 10:23:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-02-18 10:23:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:48,812 INFO L225 Difference]: With dead ends: 74 [2023-02-18 10:23:48,812 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 10:23:48,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-18 10:23:48,813 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:48,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 10:23:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2023-02-18 10:23:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:48,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2023-02-18 10:23:48,818 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 56 [2023-02-18 10:23:48,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:48,818 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2023-02-18 10:23:48,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-18 10:23:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2023-02-18 10:23:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-18 10:23:48,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:48,819 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:48,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 10:23:49,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:49,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1341839115, now seen corresponding path program 3 times [2023-02-18 10:23:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:49,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797978021] [2023-02-18 10:23:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-18 10:23:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-18 10:23:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-18 10:23:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-02-18 10:23:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797978021] [2023-02-18 10:23:49,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797978021] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339992054] [2023-02-18 10:23:49,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 10:23:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:49,289 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) [2023-02-18 10:23:49,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 10:23:49,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 10:23:49,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:49,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 10:23:49,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-02-18 10:23:49,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-02-18 10:23:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339992054] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:49,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:49,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2023-02-18 10:23:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005274281] [2023-02-18 10:23:49,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 10:23:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 10:23:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-02-18 10:23:49,417 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:49,477 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2023-02-18 10:23:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 10:23:49,481 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2023-02-18 10:23:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:49,482 INFO L225 Difference]: With dead ends: 90 [2023-02-18 10:23:49,482 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 10:23:49,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-02-18 10:23:49,483 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:49,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:23:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 10:23:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2023-02-18 10:23:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:49,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2023-02-18 10:23:49,493 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 70 [2023-02-18 10:23:49,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:49,493 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2023-02-18 10:23:49,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:49,494 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2023-02-18 10:23:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-18 10:23:49,494 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:49,495 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 11, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:49,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:49,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:49,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2138241293, now seen corresponding path program 4 times [2023-02-18 10:23:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598230746] [2023-02-18 10:23:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-18 10:23:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-02-18 10:23:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-18 10:23:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-02-18 10:23:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598230746] [2023-02-18 10:23:49,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598230746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139095761] [2023-02-18 10:23:49,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 10:23:49,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:49,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:49,935 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) [2023-02-18 10:23:49,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 10:23:50,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 10:23:50,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:50,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 10:23:50,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-02-18 10:23:50,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-02-18 10:23:50,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139095761] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:50,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:50,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-18 10:23:50,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971188915] [2023-02-18 10:23:50,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:50,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-18 10:23:50,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:50,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-18 10:23:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-02-18 10:23:50,299 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 10:23:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:50,357 INFO L93 Difference]: Finished difference Result 127 states and 159 transitions. [2023-02-18 10:23:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-18 10:23:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 108 [2023-02-18 10:23:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:50,359 INFO L225 Difference]: With dead ends: 127 [2023-02-18 10:23:50,359 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 10:23:50,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 198 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-02-18 10:23:50,361 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:50,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:50,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 10:23:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-02-18 10:23:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 84 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2023-02-18 10:23:50,375 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 108 [2023-02-18 10:23:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:50,376 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2023-02-18 10:23:50,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 10:23:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2023-02-18 10:23:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-18 10:23:50,382 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:50,383 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 18, 18, 18, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:50,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:50,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:50,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:50,589 INFO L85 PathProgramCache]: Analyzing trace with hash 819840039, now seen corresponding path program 5 times [2023-02-18 10:23:50,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:50,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792584452] [2023-02-18 10:23:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:50,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-02-18 10:23:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-02-18 10:23:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-02-18 10:23:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2023-02-18 10:23:51,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:51,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792584452] [2023-02-18 10:23:51,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792584452] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:51,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279443758] [2023-02-18 10:23:51,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 10:23:51,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:51,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:51,129 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:23:51,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 10:23:52,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-02-18 10:23:52,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:52,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 10:23:52,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:52,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2023-02-18 10:23:52,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2023-02-18 10:23:52,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279443758] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:52,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:52,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 9, 9] total 41 [2023-02-18 10:23:52,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269513983] [2023-02-18 10:23:52,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:52,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-18 10:23:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-18 10:23:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=1170, Unknown=0, NotChecked=0, Total=1640 [2023-02-18 10:23:52,475 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 41 states, 41 states have (on average 2.8780487804878048) internal successors, (118), 41 states have internal predecessors, (118), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:52,559 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2023-02-18 10:23:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-18 10:23:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.8780487804878048) internal successors, (118), 41 states have internal predecessors, (118), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 134 [2023-02-18 10:23:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:52,561 INFO L225 Difference]: With dead ends: 154 [2023-02-18 10:23:52,561 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 10:23:52,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=470, Invalid=1170, Unknown=0, NotChecked=0, Total=1640 [2023-02-18 10:23:52,562 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:52,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 194 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:23:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 10:23:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2023-02-18 10:23:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 110 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2023-02-18 10:23:52,567 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 134 [2023-02-18 10:23:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:52,567 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2023-02-18 10:23:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.8780487804878048) internal successors, (118), 41 states have internal predecessors, (118), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2023-02-18 10:23:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-02-18 10:23:52,569 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:52,569 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 25, 25, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:52,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:52,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:52,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:52,778 INFO L85 PathProgramCache]: Analyzing trace with hash 412352681, now seen corresponding path program 6 times [2023-02-18 10:23:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:52,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923040815] [2023-02-18 10:23:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:52,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-18 10:23:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-02-18 10:23:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-18 10:23:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3353 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 2728 trivial. 0 not checked. [2023-02-18 10:23:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:53,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923040815] [2023-02-18 10:23:53,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923040815] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:53,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832619640] [2023-02-18 10:23:53,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 10:23:53,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:53,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:53,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:23:53,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 10:23:53,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-18 10:23:53,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:53,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 10:23:53,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3353 backedges. 1242 proven. 4 refuted. 0 times theorem prover too weak. 2107 trivial. 0 not checked. [2023-02-18 10:23:53,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3353 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3349 trivial. 0 not checked. [2023-02-18 10:23:53,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832619640] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:53,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:53,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5, 5] total 34 [2023-02-18 10:23:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735081510] [2023-02-18 10:23:53,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-18 10:23:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-18 10:23:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=717, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 10:23:53,672 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 34 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:53,739 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2023-02-18 10:23:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-18 10:23:53,739 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 34 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 208 [2023-02-18 10:23:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:53,740 INFO L225 Difference]: With dead ends: 188 [2023-02-18 10:23:53,740 INFO L226 Difference]: Without dead ends: 126 [2023-02-18 10:23:53,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=405, Invalid=717, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 10:23:53,741 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:53,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 199 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:23:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-18 10:23:53,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2023-02-18 10:23:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 120 states have internal predecessors, (137), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2023-02-18 10:23:53,745 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 208 [2023-02-18 10:23:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:53,745 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2023-02-18 10:23:53,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.735294117647059) internal successors, (93), 34 states have internal predecessors, (93), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2023-02-18 10:23:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-02-18 10:23:53,747 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:53,747 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 26, 26, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:53,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:53,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-18 10:23:53,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash 559440675, now seen corresponding path program 7 times [2023-02-18 10:23:53,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071566175] [2023-02-18 10:23:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-02-18 10:23:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-02-18 10:23:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-02-18 10:23:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2023-02-18 10:23:54,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:54,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071566175] [2023-02-18 10:23:54,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071566175] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:54,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268444948] [2023-02-18 10:23:54,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 10:23:54,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:54,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:54,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:23:54,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 10:23:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:54,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-18 10:23:54,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2023-02-18 10:23:55,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3436 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2023-02-18 10:23:55,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268444948] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:55,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:55,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 43 [2023-02-18 10:23:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006398146] [2023-02-18 10:23:55,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:55,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-18 10:23:55,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:55,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-18 10:23:55,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 10:23:55,653 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand has 43 states, 43 states have (on average 2.5348837209302326) internal successors, (109), 43 states have internal predecessors, (109), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 10:23:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:55,729 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2023-02-18 10:23:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-18 10:23:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.5348837209302326) internal successors, (109), 43 states have internal predecessors, (109), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 218 [2023-02-18 10:23:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:55,731 INFO L225 Difference]: With dead ends: 223 [2023-02-18 10:23:55,731 INFO L226 Difference]: Without dead ends: 153 [2023-02-18 10:23:55,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 388 SyntacticMatches, 40 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 10:23:55,732 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:55,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 194 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:23:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-02-18 10:23:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-02-18 10:23:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.114864864864865) internal successors, (165), 148 states have internal predecessors, (165), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2023-02-18 10:23:55,735 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 218 [2023-02-18 10:23:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:55,736 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2023-02-18 10:23:55,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.5348837209302326) internal successors, (109), 43 states have internal predecessors, (109), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 10:23:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2023-02-18 10:23:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-02-18 10:23:55,737 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:55,738 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:55,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:55,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 10:23:55,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1233712961, now seen corresponding path program 8 times [2023-02-18 10:23:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754287430] [2023-02-18 10:23:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:55,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:23:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-02-18 10:23:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-02-18 10:23:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4360 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 2833 trivial. 0 not checked. [2023-02-18 10:23:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:56,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754287430] [2023-02-18 10:23:56,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754287430] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:56,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757236297] [2023-02-18 10:23:56,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 10:23:56,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:56,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:56,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:23:56,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 10:23:56,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 10:23:56,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:56,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 10:23:56,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:56,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4360 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 2837 trivial. 0 not checked. [2023-02-18 10:23:56,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4360 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 2833 trivial. 0 not checked. [2023-02-18 10:23:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757236297] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:56,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:56,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2023-02-18 10:23:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795976638] [2023-02-18 10:23:56,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 10:23:56,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 10:23:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-02-18 10:23:56,898 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand has 32 states, 32 states have (on average 3.625) internal successors, (116), 32 states have internal predecessors, (116), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 10:23:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:56,957 INFO L93 Difference]: Finished difference Result 270 states and 339 transitions. [2023-02-18 10:23:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 10:23:56,957 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.625) internal successors, (116), 32 states have internal predecessors, (116), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 246 [2023-02-18 10:23:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:56,960 INFO L225 Difference]: With dead ends: 270 [2023-02-18 10:23:56,960 INFO L226 Difference]: Without dead ends: 201 [2023-02-18 10:23:56,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 469 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-02-18 10:23:56,961 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 129 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:56,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 150 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 10:23:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-18 10:23:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-02-18 10:23:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 196 states have (on average 1.1683673469387754) internal successors, (229), 196 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2023-02-18 10:23:56,966 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 246 [2023-02-18 10:23:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:56,966 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2023-02-18 10:23:56,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.625) internal successors, (116), 32 states have internal predecessors, (116), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 10:23:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2023-02-18 10:23:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-02-18 10:23:56,969 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:56,969 INFO L195 NwaCegarLoop]: trace histogram [90, 90, 90, 40, 40, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:56,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:57,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 10:23:57,176 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash -428343617, now seen corresponding path program 9 times [2023-02-18 10:23:57,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:57,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192176729] [2023-02-18 10:23:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:57,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:23:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-02-18 10:23:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:58,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-02-18 10:23:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:23:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13936 backedges. 0 proven. 6863 refuted. 0 times theorem prover too weak. 7073 trivial. 0 not checked. [2023-02-18 10:23:58,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:23:58,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192176729] [2023-02-18 10:23:58,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192176729] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:23:58,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268316174] [2023-02-18 10:23:58,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 10:23:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:23:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:23:58,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:23:58,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 10:23:58,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-18 10:23:58,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:23:58,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 10:23:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:23:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13936 backedges. 5530 proven. 36 refuted. 0 times theorem prover too weak. 8370 trivial. 0 not checked. [2023-02-18 10:23:59,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:23:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13936 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 13900 trivial. 0 not checked. [2023-02-18 10:23:59,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268316174] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:23:59,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:23:59,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 9] total 47 [2023-02-18 10:23:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69718700] [2023-02-18 10:23:59,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:23:59,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-18 10:23:59,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:23:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-18 10:23:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 10:23:59,195 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 47 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:23:59,295 INFO L93 Difference]: Finished difference Result 339 states and 419 transitions. [2023-02-18 10:23:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 10:23:59,295 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 47 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 390 [2023-02-18 10:23:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:23:59,296 INFO L225 Difference]: With dead ends: 339 [2023-02-18 10:23:59,296 INFO L226 Difference]: Without dead ends: 222 [2023-02-18 10:23:59,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=647, Invalid=1515, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 10:23:59,298 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:23:59,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 291 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:23:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-02-18 10:23:59,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 220. [2023-02-18 10:23:59,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.158139534883721) internal successors, (249), 215 states have internal predecessors, (249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:23:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 255 transitions. [2023-02-18 10:23:59,303 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 255 transitions. Word has length 390 [2023-02-18 10:23:59,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:23:59,303 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 255 transitions. [2023-02-18 10:23:59,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.1702127659574466) internal successors, (149), 47 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 10:23:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 255 transitions. [2023-02-18 10:23:59,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-02-18 10:23:59,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:23:59,307 INFO L195 NwaCegarLoop]: trace histogram [93, 93, 93, 40, 40, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:23:59,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 10:23:59,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-18 10:23:59,513 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:23:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:23:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash 991955861, now seen corresponding path program 10 times [2023-02-18 10:23:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:23:59,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096376302] [2023-02-18 10:23:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:23:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:23:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:24:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-02-18 10:24:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-02-18 10:24:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14924 backedges. 0 proven. 7324 refuted. 0 times theorem prover too weak. 7600 trivial. 0 not checked. [2023-02-18 10:24:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:24:00,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096376302] [2023-02-18 10:24:00,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096376302] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:24:00,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144088199] [2023-02-18 10:24:00,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 10:24:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:24:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:24:00,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:24:00,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 10:24:01,181 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 10:24:01,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:24:01,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-18 10:24:01,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:24:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14924 backedges. 5894 proven. 1426 refuted. 0 times theorem prover too weak. 7604 trivial. 0 not checked. [2023-02-18 10:24:01,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:24:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14924 backedges. 0 proven. 7324 refuted. 0 times theorem prover too weak. 7600 trivial. 0 not checked. [2023-02-18 10:24:02,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144088199] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:24:02,202 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:24:02,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 42 [2023-02-18 10:24:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189447329] [2023-02-18 10:24:02,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:24:02,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-18 10:24:02,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:24:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-18 10:24:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 10:24:02,205 INFO L87 Difference]: Start difference. First operand 220 states and 255 transitions. Second operand has 42 states, 42 states have (on average 3.5476190476190474) internal successors, (149), 42 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 10:24:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:24:02,286 INFO L93 Difference]: Finished difference Result 383 states and 472 transitions. [2023-02-18 10:24:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-18 10:24:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5476190476190474) internal successors, (149), 42 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 415 [2023-02-18 10:24:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:24:02,288 INFO L225 Difference]: With dead ends: 383 [2023-02-18 10:24:02,288 INFO L226 Difference]: Without dead ends: 247 [2023-02-18 10:24:02,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 773 SyntacticMatches, 55 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 10:24:02,289 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 148 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:24:02,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 170 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:24:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-02-18 10:24:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-02-18 10:24:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.177685950413223) internal successors, (285), 242 states have internal predecessors, (285), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:24:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 291 transitions. [2023-02-18 10:24:02,294 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 291 transitions. Word has length 415 [2023-02-18 10:24:02,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:24:02,294 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 291 transitions. [2023-02-18 10:24:02,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5476190476190474) internal successors, (149), 42 states have internal predecessors, (149), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 10:24:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 291 transitions. [2023-02-18 10:24:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-02-18 10:24:02,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:24:02,299 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 40, 40, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:24:02,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 10:24:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-18 10:24:02,506 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:24:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:24:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1077747567, now seen corresponding path program 11 times [2023-02-18 10:24:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:24:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460639472] [2023-02-18 10:24:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:24:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:24:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:24:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-02-18 10:24:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2023-02-18 10:24:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:24:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 23591 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2023-02-18 10:24:03,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:24:03,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460639472] [2023-02-18 10:24:03,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460639472] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:24:03,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615789868] [2023-02-18 10:24:03,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 10:24:03,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:24:03,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:24:03,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:24:03,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 10:28:41,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2023-02-18 10:28:41,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:28:42,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 10:28:42,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:28:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 23591 backedges. 9770 proven. 196 refuted. 0 times theorem prover too weak. 13625 trivial. 0 not checked. [2023-02-18 10:28:42,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:28:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 23591 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2023-02-18 10:28:42,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615789868] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:28:42,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:28:42,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2023-02-18 10:28:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221173630] [2023-02-18 10:28:42,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:28:42,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 10:28:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:28:42,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 10:28:42,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 10:28:42,366 INFO L87 Difference]: Start difference. First operand 247 states and 291 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 10:28:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:28:42,430 INFO L93 Difference]: Finished difference Result 410 states and 510 transitions. [2023-02-18 10:28:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 10:28:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 496 [2023-02-18 10:28:42,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:28:42,432 INFO L225 Difference]: With dead ends: 410 [2023-02-18 10:28:42,432 INFO L226 Difference]: Without dead ends: 279 [2023-02-18 10:28:42,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 968 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 10:28:42,433 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:28:42,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 118 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:28:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-02-18 10:28:42,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-02-18 10:28:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 274 states have (on average 1.1569343065693432) internal successors, (317), 274 states have internal predecessors, (317), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:28:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 323 transitions. [2023-02-18 10:28:42,438 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 323 transitions. Word has length 496 [2023-02-18 10:28:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:28:42,439 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 323 transitions. [2023-02-18 10:28:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 10:28:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 323 transitions. [2023-02-18 10:28:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-02-18 10:28:42,441 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:28:42,442 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 40, 40, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:28:42,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-18 10:28:42,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-18 10:28:42,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:28:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:28:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash 424049999, now seen corresponding path program 12 times [2023-02-18 10:28:42,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:28:42,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256685456] [2023-02-18 10:28:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:28:42,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:28:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:28:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:28:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:28:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-02-18 10:28:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:28:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2023-02-18 10:28:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:28:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 24295 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2023-02-18 10:28:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:28:44,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256685456] [2023-02-18 10:28:44,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256685456] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:28:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738422123] [2023-02-18 10:28:44,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 10:28:44,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:28:44,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:28:44,069 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:28:44,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 10:29:46,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2023-02-18 10:29:46,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:29:47,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 10:29:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:29:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 24295 backedges. 9849 proven. 900 refuted. 0 times theorem prover too weak. 13546 trivial. 0 not checked. [2023-02-18 10:29:47,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:29:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 24295 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 23395 trivial. 0 not checked. [2023-02-18 10:29:47,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738422123] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:29:47,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:29:47,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 35, 33] total 44 [2023-02-18 10:29:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040592460] [2023-02-18 10:29:47,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:29:47,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-18 10:29:47,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:29:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-18 10:29:47,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=866, Invalid=1026, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 10:29:47,808 INFO L87 Difference]: Start difference. First operand 279 states and 323 transitions. Second operand has 44 states, 44 states have (on average 2.5) internal successors, (110), 44 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 10:29:48,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:29:48,345 INFO L93 Difference]: Finished difference Result 428 states and 521 transitions. [2023-02-18 10:29:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-18 10:29:48,346 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.5) internal successors, (110), 44 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 528 [2023-02-18 10:29:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:29:48,347 INFO L225 Difference]: With dead ends: 428 [2023-02-18 10:29:48,347 INFO L226 Difference]: Without dead ends: 297 [2023-02-18 10:29:48,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1132 GetRequests, 998 SyntacticMatches, 53 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2505, Invalid=4301, Unknown=0, NotChecked=0, Total=6806 [2023-02-18 10:29:48,350 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 88 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 10:29:48,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 94 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 10:29:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-02-18 10:29:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-02-18 10:29:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 292 states have (on average 1.1472602739726028) internal successors, (335), 292 states have internal predecessors, (335), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 10:29:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 341 transitions. [2023-02-18 10:29:48,356 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 341 transitions. Word has length 528 [2023-02-18 10:29:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:29:48,357 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 341 transitions. [2023-02-18 10:29:48,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.5) internal successors, (110), 44 states have internal predecessors, (110), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 10:29:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 341 transitions. [2023-02-18 10:29:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-02-18 10:29:48,385 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:29:48,385 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 40, 40, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:29:48,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 10:29:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:29:48,586 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:29:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:29:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1616784803, now seen corresponding path program 13 times [2023-02-18 10:29:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:29:48,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919874384] [2023-02-18 10:29:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:29:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:29:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:30:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:30:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:30:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-02-18 10:30:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:30:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-02-18 10:30:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:30:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 236 proven. 22189 refuted. 0 times theorem prover too weak. 2491 trivial. 0 not checked. [2023-02-18 10:30:09,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:30:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919874384] [2023-02-18 10:30:09,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919874384] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:30:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042723319] [2023-02-18 10:30:09,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 10:30:09,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:30:09,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:30:09,155 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:30:09,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 10:30:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:30:09,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 289 conjunts are in the unsatisfiable core [2023-02-18 10:30:09,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:30:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 0 proven. 22120 refuted. 0 times theorem prover too weak. 2796 trivial. 0 not checked. [2023-02-18 10:30:24,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:30:30,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 0 proven. 21420 refuted. 0 times theorem prover too weak. 3496 trivial. 0 not checked. [2023-02-18 10:30:30,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042723319] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:30:30,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:30:30,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 60, 50] total 172 [2023-02-18 10:30:30,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667544815] [2023-02-18 10:30:30,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:30:30,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2023-02-18 10:30:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:30:30,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2023-02-18 10:30:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=28884, Unknown=0, NotChecked=0, Total=29412 [2023-02-18 10:30:30,318 INFO L87 Difference]: Start difference. First operand 297 states and 341 transitions. Second operand has 172 states, 170 states have (on average 2.588235294117647) internal successors, (440), 166 states have internal predecessors, (440), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-18 10:30:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:30:49,637 INFO L93 Difference]: Finished difference Result 2706 states and 3823 transitions. [2023-02-18 10:30:49,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-02-18 10:30:49,646 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 170 states have (on average 2.588235294117647) internal successors, (440), 166 states have internal predecessors, (440), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 546 [2023-02-18 10:30:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:30:49,658 INFO L225 Difference]: With dead ends: 2706 [2023-02-18 10:30:49,661 INFO L226 Difference]: Without dead ends: 2702 [2023-02-18 10:30:49,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 936 SyntacticMatches, 145 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14830 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=553, Invalid=29897, Unknown=0, NotChecked=0, Total=30450 [2023-02-18 10:30:49,665 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 395 mSDsluCounter, 18636 mSDsCounter, 0 mSdLazyCounter, 40823 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 18841 SdHoareTripleChecker+Invalid, 41124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 40823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2023-02-18 10:30:49,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 18841 Invalid, 41124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [301 Valid, 40823 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2023-02-18 10:30:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2023-02-18 10:30:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 1744. [2023-02-18 10:30:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1736 states have (on average 1.3024193548387097) internal successors, (2261), 1737 states have internal predecessors, (2261), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-02-18 10:30:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2275 transitions. [2023-02-18 10:30:49,805 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2275 transitions. Word has length 546 [2023-02-18 10:30:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:30:49,806 INFO L495 AbstractCegarLoop]: Abstraction has 1744 states and 2275 transitions. [2023-02-18 10:30:49,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 170 states have (on average 2.588235294117647) internal successors, (440), 166 states have internal predecessors, (440), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-18 10:30:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2275 transitions. [2023-02-18 10:30:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-02-18 10:30:49,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:30:49,815 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 119, 40, 40, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:30:49,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 10:30:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 10:30:50,026 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:30:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:30:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash -936726433, now seen corresponding path program 1 times [2023-02-18 10:30:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:30:50,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251934741] [2023-02-18 10:30:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:30:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:30:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:31:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:31:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:31:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-02-18 10:31:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:31:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-02-18 10:31:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:31:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 9769 proven. 9096 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-02-18 10:31:05,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:31:05,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251934741] [2023-02-18 10:31:05,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251934741] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:31:05,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648614437] [2023-02-18 10:31:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:31:05,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:31:05,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:31:05,548 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:31:05,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 10:31:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:31:06,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 136 conjunts are in the unsatisfiable core [2023-02-18 10:31:06,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:31:06,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 10:31:07,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:31:07,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 10:31:07,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 252 [2023-02-18 10:31:14,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-18 10:31:14,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-02-18 10:31:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 7 proven. 17342 refuted. 0 times theorem prover too weak. 7567 trivial. 0 not checked. [2023-02-18 10:31:19,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 10:31:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 5156 proven. 12071 refuted. 0 times theorem prover too weak. 7689 trivial. 0 not checked. [2023-02-18 10:31:27,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648614437] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 10:31:27,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 10:31:27,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 57, 52] total 190 [2023-02-18 10:31:27,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213987956] [2023-02-18 10:31:27,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 10:31:27,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2023-02-18 10:31:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 10:31:27,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2023-02-18 10:31:27,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=35211, Unknown=0, NotChecked=0, Total=35910 [2023-02-18 10:31:27,389 INFO L87 Difference]: Start difference. First operand 1744 states and 2275 transitions. Second operand has 190 states, 188 states have (on average 2.776595744680851) internal successors, (522), 187 states have internal predecessors, (522), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-18 10:32:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 10:32:51,511 INFO L93 Difference]: Finished difference Result 12259 states and 16641 transitions. [2023-02-18 10:32:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 508 states. [2023-02-18 10:32:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 188 states have (on average 2.776595744680851) internal successors, (522), 187 states have internal predecessors, (522), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 546 [2023-02-18 10:32:51,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 10:32:51,544 INFO L225 Difference]: With dead ends: 12259 [2023-02-18 10:32:51,544 INFO L226 Difference]: Without dead ends: 10284 [2023-02-18 10:32:51,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1883 GetRequests, 1293 SyntacticMatches, 26 SemanticMatches, 564 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 97841 ImplicationChecksByTransitivity, 75.5s TimeCoverageRelationStatistics Valid=6446, Invalid=313344, Unknown=0, NotChecked=0, Total=319790 [2023-02-18 10:32:51,569 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1007 mSDsluCounter, 29490 mSDsCounter, 0 mSdLazyCounter, 46971 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 29749 SdHoareTripleChecker+Invalid, 47051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 46971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2023-02-18 10:32:51,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 29749 Invalid, 47051 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [80 Valid, 46971 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time] [2023-02-18 10:32:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10284 states. [2023-02-18 10:32:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10284 to 6554. [2023-02-18 10:32:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6532 states have (on average 1.3314451928965094) internal successors, (8697), 6538 states have internal predecessors, (8697), 10 states have call successors, (10), 5 states have call predecessors, (10), 11 states have return successors, (34), 10 states have call predecessors, (34), 10 states have call successors, (34) [2023-02-18 10:32:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 8741 transitions. [2023-02-18 10:32:52,158 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 8741 transitions. Word has length 546 [2023-02-18 10:32:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 10:32:52,159 INFO L495 AbstractCegarLoop]: Abstraction has 6554 states and 8741 transitions. [2023-02-18 10:32:52,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 188 states have (on average 2.776595744680851) internal successors, (522), 187 states have internal predecessors, (522), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-18 10:32:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 8741 transitions. [2023-02-18 10:32:52,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-02-18 10:32:52,183 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 10:32:52,183 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 119, 40, 40, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 10:32:52,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 10:32:52,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 10:32:52,398 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 10:32:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 10:32:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1358619365, now seen corresponding path program 2 times [2023-02-18 10:32:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 10:32:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053466834] [2023-02-18 10:32:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 10:32:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 10:32:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:33:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-18 10:33:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:33:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-02-18 10:33:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:33:28,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2023-02-18 10:33:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 10:33:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 9768 proven. 12651 refuted. 0 times theorem prover too weak. 2497 trivial. 0 not checked. [2023-02-18 10:33:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 10:33:30,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053466834] [2023-02-18 10:33:30,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053466834] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 10:33:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124596100] [2023-02-18 10:33:30,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 10:33:30,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 10:33:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 10:33:30,145 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 10:33:30,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 10:33:30,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 10:33:30,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 10:33:30,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 424 conjunts are in the unsatisfiable core [2023-02-18 10:33:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 10:33:31,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-18 10:33:34,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 59 [2023-02-18 10:33:34,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:34,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:34,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:35,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:35,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 10:33:36,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2023-02-18 10:33:37,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 10:33:37,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2023-02-18 10:33:37,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 10:33:37,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 68 [2023-02-18 10:33:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24916 backedges. 9885 proven. 12647 refuted. 0 times theorem prover too weak. 2384 trivial. 0 not checked. [2023-02-18 10:33:42,558 INFO L328 TraceCheckSpWp]: Computing backward predicates...