./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/recursive/MultCommutative-2.c -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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:55:30,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:55:30,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:55:30,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:55:30,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:55:30,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:55:30,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:55:30,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:55:30,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:55:30,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:55:30,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:55:30,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:55:30,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:55:30,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:55:30,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:55:30,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:55:30,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:55:30,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:55:30,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:55:30,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:55:30,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:55:30,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:55:30,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:55:30,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:55:30,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:55:30,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:55:30,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:55:30,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:55:30,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:55:30,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:55:30,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:55:30,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:55:30,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:55:30,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:55:30,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:55:30,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:55:30,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:55:30,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:55:30,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:55:30,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:55:30,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:55:30,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:55:30,848 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:55:30,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:55:30,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:55:30,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:55:30,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:55:30,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:55:30,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:55:30,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:55:30,851 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:55:30,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:55:30,851 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:55:30,852 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:55:30,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:55:30,853 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:55:30,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:55:30,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:55:30,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:55:30,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:55:30,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:55:30,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:55:30,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:55:30,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:55:30,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:55:30,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:55:30,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:55:30,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:55:30,855 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:55:30,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:55:30,855 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:55:30,855 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-16 02:55:31,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:55:31,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:55:31,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:55:31,108 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:55:31,110 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:55:31,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-16 02:55:32,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:55:32,275 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:55:32,275 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-16 02:55:32,283 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c552d91/963e5bc5f7264202ab290d17ec984925/FLAG1a4103718 [2023-02-16 02:55:32,294 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c552d91/963e5bc5f7264202ab290d17ec984925 [2023-02-16 02:55:32,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:55:32,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:55:32,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:55:32,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:55:32,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:55:32,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f56eca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32, skipping insertion in model container [2023-02-16 02:55:32,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:55:32,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:55:32,407 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/recursive/MultCommutative-2.c[970,983] [2023-02-16 02:55:32,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:55:32,418 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:55:32,428 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/recursive/MultCommutative-2.c[970,983] [2023-02-16 02:55:32,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:55:32,442 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:55:32,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32 WrapperNode [2023-02-16 02:55:32,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:55:32,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:55:32,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:55:32,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:55:32,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,461 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-16 02:55:32,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:55:32,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:55:32,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:55:32,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:55:32,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,473 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:55:32,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:55:32,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:55:32,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:55:32,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (1/1) ... [2023-02-16 02:55:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:55:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:32,550 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) [2023-02-16 02:55:32,566 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 [2023-02-16 02:55:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:55:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-16 02:55:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-16 02:55:32,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:55:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:55:32,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:55:32,633 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:55:32,635 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:55:32,738 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:55:32,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:55:32,743 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 02:55:32,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:32 BoogieIcfgContainer [2023-02-16 02:55:32,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:55:32,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:55:32,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:55:32,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:55:32,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:55:32" (1/3) ... [2023-02-16 02:55:32,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e410893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:55:32, skipping insertion in model container [2023-02-16 02:55:32,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:32" (2/3) ... [2023-02-16 02:55:32,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e410893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:55:32, skipping insertion in model container [2023-02-16 02:55:32,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:32" (3/3) ... [2023-02-16 02:55:32,765 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-16 02:55:32,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:55:32,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:55:32,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:55:32,836 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;@4add5ef2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:55:32,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:55:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:55:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 02:55:32,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:32,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:32,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:32,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1513944532, now seen corresponding path program 1 times [2023-02-16 02:55:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:32,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327172302] [2023-02-16 02:55:32,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:32,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 02:55:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 02:55:33,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327172302] [2023-02-16 02:55:33,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327172302] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:33,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:33,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 02:55:33,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580875459] [2023-02-16 02:55:33,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:33,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 02:55:33,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 02:55:33,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 02:55:33,265 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:55:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:33,384 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-02-16 02:55:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:55:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-02-16 02:55:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:33,393 INFO L225 Difference]: With dead ends: 44 [2023-02-16 02:55:33,393 INFO L226 Difference]: Without dead ends: 28 [2023-02-16 02:55:33,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:55:33,399 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:33,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-16 02:55:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-02-16 02:55:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 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) [2023-02-16 02:55:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-02-16 02:55:33,427 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 20 [2023-02-16 02:55:33,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:33,427 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-02-16 02:55:33,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:55:33,428 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-02-16 02:55:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 02:55:33,429 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:33,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:33,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 02:55:33,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash 555960324, now seen corresponding path program 1 times [2023-02-16 02:55:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:33,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381767842] [2023-02-16 02:55:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 02:55:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:55:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381767842] [2023-02-16 02:55:33,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381767842] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540455649] [2023-02-16 02:55:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:33,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:33,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:33,616 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) [2023-02-16 02:55:33,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:55:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:33,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 02:55:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:55:33,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:55:33,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540455649] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:33,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:33,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-02-16 02:55:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399527946] [2023-02-16 02:55:33,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:33,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 02:55:33,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:33,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 02:55:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:55:33,863 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:55:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:34,043 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2023-02-16 02:55:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:55:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2023-02-16 02:55:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:34,045 INFO L225 Difference]: With dead ends: 52 [2023-02-16 02:55:34,045 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 02:55:34,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-16 02:55:34,047 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:34,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:34,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 02:55:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-02-16 02:55:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 02:55:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-02-16 02:55:34,052 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 26 [2023-02-16 02:55:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:34,052 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-02-16 02:55:34,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:55:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-02-16 02:55:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 02:55:34,054 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:34,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:34,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 02:55:34,258 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 [2023-02-16 02:55:34,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2011031750, now seen corresponding path program 1 times [2023-02-16 02:55:34,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:34,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195328780] [2023-02-16 02:55:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 02:55:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-16 02:55:34,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:34,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195328780] [2023-02-16 02:55:34,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195328780] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:34,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:34,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:55:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243843197] [2023-02-16 02:55:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:55:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:55:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:55:34,377 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 02:55:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:34,423 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-16 02:55:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:55:34,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-02-16 02:55:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:34,425 INFO L225 Difference]: With dead ends: 31 [2023-02-16 02:55:34,425 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 02:55:34,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:55:34,426 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:34,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 02:55:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-16 02:55:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 02:55:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-02-16 02:55:34,431 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 27 [2023-02-16 02:55:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:34,431 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-02-16 02:55:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 02:55:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-02-16 02:55:34,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-16 02:55:34,433 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:34,433 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:34,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 02:55:34,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash -760266050, now seen corresponding path program 2 times [2023-02-16 02:55:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:34,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65418160] [2023-02-16 02:55:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:34,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 02:55:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 02:55:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:34,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65418160] [2023-02-16 02:55:34,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65418160] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:34,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278252218] [2023-02-16 02:55:34,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:55:34,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:34,893 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) [2023-02-16 02:55:34,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:55:34,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:55:34,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:34,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-16 02:55:34,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 02:55:35,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 02:55:35,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278252218] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:35,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:35,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 33 [2023-02-16 02:55:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058285660] [2023-02-16 02:55:35,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:35,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-16 02:55:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:35,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-16 02:55:35,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2023-02-16 02:55:35,714 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-16 02:55:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:36,163 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2023-02-16 02:55:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 02:55:36,163 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) Word has length 34 [2023-02-16 02:55:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:36,165 INFO L225 Difference]: With dead ends: 53 [2023-02-16 02:55:36,165 INFO L226 Difference]: Without dead ends: 45 [2023-02-16 02:55:36,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=1759, Unknown=0, NotChecked=0, Total=1980 [2023-02-16 02:55:36,166 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 54 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:36,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 177 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-16 02:55:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2023-02-16 02:55:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (21), 9 states have call predecessors, (21), 6 states have call successors, (21) [2023-02-16 02:55:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 53 transitions. [2023-02-16 02:55:36,173 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 53 transitions. Word has length 34 [2023-02-16 02:55:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:36,173 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 53 transitions. [2023-02-16 02:55:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-16 02:55:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 53 transitions. [2023-02-16 02:55:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 02:55:36,174 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:36,174 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:36,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:36,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-16 02:55:36,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash -757286924, now seen corresponding path program 1 times [2023-02-16 02:55:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:36,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886274377] [2023-02-16 02:55:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 02:55:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 02:55:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-16 02:55:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:36,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886274377] [2023-02-16 02:55:36,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886274377] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:36,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210888212] [2023-02-16 02:55:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:36,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:36,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:36,513 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) [2023-02-16 02:55:36,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:55:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:36,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 02:55:36,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-16 02:55:36,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-16 02:55:36,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210888212] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:36,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:36,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-02-16 02:55:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484250195] [2023-02-16 02:55:36,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:36,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:55:36,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:55:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:55:36,785 INFO L87 Difference]: Start difference. First operand 37 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-16 02:55:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:36,849 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2023-02-16 02:55:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:55:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 47 [2023-02-16 02:55:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:36,851 INFO L225 Difference]: With dead ends: 57 [2023-02-16 02:55:36,864 INFO L226 Difference]: Without dead ends: 23 [2023-02-16 02:55:36,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:55:36,866 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:36,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-16 02:55:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-16 02:55:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 02:55:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-02-16 02:55:36,868 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 47 [2023-02-16 02:55:36,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:36,868 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-02-16 02:55:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-16 02:55:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-02-16 02:55:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 02:55:36,869 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:36,869 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:36,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:37,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:37,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1519724908, now seen corresponding path program 3 times [2023-02-16 02:55:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:37,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174473360] [2023-02-16 02:55:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:37,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 02:55:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-02-16 02:55:37,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:37,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174473360] [2023-02-16 02:55:37,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174473360] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:37,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837991523] [2023-02-16 02:55:37,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:55:37,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:37,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:37,618 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) [2023-02-16 02:55:37,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:55:37,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-16 02:55:37,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:37,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-16 02:55:37,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-02-16 02:55:38,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 51 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-16 02:55:39,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837991523] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:39,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:39,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 36 [2023-02-16 02:55:39,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290755135] [2023-02-16 02:55:39,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:39,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-16 02:55:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-16 02:55:39,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2023-02-16 02:55:39,040 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2023-02-16 02:55:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:39,485 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-02-16 02:55:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 02:55:39,488 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) Word has length 48 [2023-02-16 02:55:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:39,490 INFO L225 Difference]: With dead ends: 36 [2023-02-16 02:55:39,490 INFO L226 Difference]: Without dead ends: 26 [2023-02-16 02:55:39,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=2076, Unknown=0, NotChecked=0, Total=2352 [2023-02-16 02:55:39,493 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:39,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 177 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-16 02:55:39,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-16 02:55:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:55:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-02-16 02:55:39,505 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 48 [2023-02-16 02:55:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:39,506 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-02-16 02:55:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2023-02-16 02:55:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-02-16 02:55:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-16 02:55:39,511 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:39,511 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:39,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 02:55:39,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:39,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:39,716 INFO L85 PathProgramCache]: Analyzing trace with hash -826569506, now seen corresponding path program 4 times [2023-02-16 02:55:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:39,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877523351] [2023-02-16 02:55:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-16 02:55:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 82 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-02-16 02:55:40,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:40,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877523351] [2023-02-16 02:55:40,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877523351] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:40,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850081342] [2023-02-16 02:55:40,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:55:40,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:40,330 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) [2023-02-16 02:55:40,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:55:40,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:55:40,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:40,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-16 02:55:40,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-02-16 02:55:40,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-02-16 02:55:42,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850081342] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:42,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:42,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 21] total 42 [2023-02-16 02:55:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624446847] [2023-02-16 02:55:42,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:42,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-16 02:55:42,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-16 02:55:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2023-02-16 02:55:42,205 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-02-16 02:55:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:42,801 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-02-16 02:55:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-16 02:55:42,801 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) Word has length 62 [2023-02-16 02:55:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:42,803 INFO L225 Difference]: With dead ends: 39 [2023-02-16 02:55:42,803 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 02:55:42,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 102 SyntacticMatches, 20 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2023-02-16 02:55:42,805 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:42,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 218 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 02:55:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-16 02:55:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-16 02:55:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-16 02:55:42,814 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 62 [2023-02-16 02:55:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:42,814 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-16 02:55:42,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-02-16 02:55:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-16 02:55:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 02:55:42,816 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:42,816 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:42,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 02:55:43,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:43,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:43,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash -529248084, now seen corresponding path program 5 times [2023-02-16 02:55:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:43,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263875845] [2023-02-16 02:55:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:43,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 02:55:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 134 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-16 02:55:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:43,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263875845] [2023-02-16 02:55:43,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263875845] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:43,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104931308] [2023-02-16 02:55:43,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 02:55:43,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:43,828 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) [2023-02-16 02:55:43,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:55:43,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-02-16 02:55:43,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:43,883 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 121 conjunts are in the unsatisfiable core [2023-02-16 02:55:43,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 132 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-16 02:55:44,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 197 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-02-16 02:55:45,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104931308] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:45,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:45,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 48 [2023-02-16 02:55:45,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599808727] [2023-02-16 02:55:45,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:45,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-16 02:55:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:45,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-16 02:55:45,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2023-02-16 02:55:45,932 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-16 02:55:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:46,588 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-02-16 02:55:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-16 02:55:46,589 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) Word has length 76 [2023-02-16 02:55:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:46,590 INFO L225 Difference]: With dead ends: 42 [2023-02-16 02:55:46,590 INFO L226 Difference]: Without dead ends: 32 [2023-02-16 02:55:46,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 123 SyntacticMatches, 29 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=412, Invalid=3748, Unknown=0, NotChecked=0, Total=4160 [2023-02-16 02:55:46,591 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:46,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 302 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 02:55:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-16 02:55:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-16 02:55:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-16 02:55:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-02-16 02:55:46,594 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 76 [2023-02-16 02:55:46,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:46,595 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-02-16 02:55:46,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-16 02:55:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-02-16 02:55:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-16 02:55:46,596 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:46,596 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:46,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:46,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:46,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash -495284482, now seen corresponding path program 6 times [2023-02-16 02:55:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:46,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276586294] [2023-02-16 02:55:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-02-16 02:55:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 34 proven. 198 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-02-16 02:55:47,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:47,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276586294] [2023-02-16 02:55:47,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276586294] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:47,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028559458] [2023-02-16 02:55:47,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 02:55:47,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:47,868 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) [2023-02-16 02:55:47,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:55:47,948 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-02-16 02:55:47,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:47,950 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 144 conjunts are in the unsatisfiable core [2023-02-16 02:55:47,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 22 proven. 200 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-02-16 02:55:48,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 309 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-02-16 02:55:50,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028559458] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:50,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:50,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 31] total 59 [2023-02-16 02:55:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633384203] [2023-02-16 02:55:50,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-16 02:55:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-16 02:55:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3187, Unknown=0, NotChecked=0, Total=3422 [2023-02-16 02:55:50,559 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) [2023-02-16 02:55:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:51,103 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-02-16 02:55:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-16 02:55:51,104 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) Word has length 90 [2023-02-16 02:55:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:51,108 INFO L225 Difference]: With dead ends: 45 [2023-02-16 02:55:51,108 INFO L226 Difference]: Without dead ends: 35 [2023-02-16 02:55:51,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 136 SyntacticMatches, 41 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=573, Invalid=5433, Unknown=0, NotChecked=0, Total=6006 [2023-02-16 02:55:51,111 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:51,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 288 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-16 02:55:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-16 02:55:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-16 02:55:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-02-16 02:55:51,135 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 90 [2023-02-16 02:55:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:51,136 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-16 02:55:51,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) [2023-02-16 02:55:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-02-16 02:55:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-16 02:55:51,138 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:51,138 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:51,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:51,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1413185516, now seen corresponding path program 7 times [2023-02-16 02:55:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:51,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102604669] [2023-02-16 02:55:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-16 02:55:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,572 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 42 proven. 274 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-02-16 02:55:52,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:52,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102604669] [2023-02-16 02:55:52,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102604669] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:52,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928792289] [2023-02-16 02:55:52,573 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 02:55:52,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:52,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:52,591 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) [2023-02-16 02:55:52,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 02:55:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:52,663 WARN L261 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 169 conjunts are in the unsatisfiable core [2023-02-16 02:55:52,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 6 proven. 270 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-02-16 02:55:53,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 23 proven. 439 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-02-16 02:55:56,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928792289] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:56,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:56,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 30] total 60 [2023-02-16 02:55:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749403232] [2023-02-16 02:55:56,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:56,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-16 02:55:56,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-16 02:55:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2023-02-16 02:55:56,342 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2023-02-16 02:55:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:57,018 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-02-16 02:55:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-16 02:55:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 104 [2023-02-16 02:55:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:57,019 INFO L225 Difference]: With dead ends: 48 [2023-02-16 02:55:57,019 INFO L226 Difference]: Without dead ends: 38 [2023-02-16 02:55:57,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 173 SyntacticMatches, 39 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=564, Invalid=5916, Unknown=0, NotChecked=0, Total=6480 [2023-02-16 02:55:57,021 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 101 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:57,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 262 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-16 02:55:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-16 02:55:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-16 02:55:57,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-02-16 02:55:57,024 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 104 [2023-02-16 02:55:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:57,024 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-02-16 02:55:57,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2023-02-16 02:55:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-02-16 02:55:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-02-16 02:55:57,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:57,025 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:57,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:57,225 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,SelfDestructingSolverStorable9 [2023-02-16 02:55:57,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1686718750, now seen corresponding path program 8 times [2023-02-16 02:55:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:57,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924018895] [2023-02-16 02:55:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:57,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:57,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-02-16 02:55:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 50 proven. 362 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-02-16 02:55:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:58,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924018895] [2023-02-16 02:55:58,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924018895] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:58,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149316028] [2023-02-16 02:55:58,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:55:58,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:58,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:58,675 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) [2023-02-16 02:55:58,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 02:55:58,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:55:58,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:58,756 WARN L261 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 193 conjunts are in the unsatisfiable core [2023-02-16 02:55:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 7 proven. 357 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-02-16 02:55:59,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 26 proven. 596 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-02-16 02:56:03,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149316028] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:03,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:03,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 33] total 66 [2023-02-16 02:56:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306038629] [2023-02-16 02:56:03,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:03,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-02-16 02:56:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:03,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-02-16 02:56:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4042, Unknown=0, NotChecked=0, Total=4290 [2023-02-16 02:56:03,513 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2023-02-16 02:56:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:04,393 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-02-16 02:56:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-16 02:56:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 118 [2023-02-16 02:56:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:04,394 INFO L225 Difference]: With dead ends: 51 [2023-02-16 02:56:04,394 INFO L226 Difference]: Without dead ends: 41 [2023-02-16 02:56:04,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 197 SyntacticMatches, 45 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=646, Invalid=7186, Unknown=0, NotChecked=0, Total=7832 [2023-02-16 02:56:04,396 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:04,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 424 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 02:56:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-16 02:56:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-02-16 02:56:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 9 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-16 02:56:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-02-16 02:56:04,399 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 118 [2023-02-16 02:56:04,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:04,399 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-02-16 02:56:04,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2023-02-16 02:56:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-02-16 02:56:04,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-02-16 02:56:04,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:04,400 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:04,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:04,606 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:04,606 INFO L85 PathProgramCache]: Analyzing trace with hash 80066348, now seen corresponding path program 9 times [2023-02-16 02:56:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970162547] [2023-02-16 02:56:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:56:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-16 02:56:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 58 proven. 462 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-02-16 02:56:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:06,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970162547] [2023-02-16 02:56:06,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970162547] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:06,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244199762] [2023-02-16 02:56:06,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:56:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:06,425 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) [2023-02-16 02:56:06,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 02:56:06,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-02-16 02:56:06,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:06,566 WARN L261 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 217 conjunts are in the unsatisfiable core [2023-02-16 02:56:06,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 8 proven. 456 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-02-16 02:56:07,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 29 proven. 777 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-02-16 02:56:11,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244199762] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:11,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:11,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 36] total 72 [2023-02-16 02:56:11,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659568402] [2023-02-16 02:56:11,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:11,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-16 02:56:11,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:11,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-16 02:56:11,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4840, Unknown=0, NotChecked=0, Total=5112 [2023-02-16 02:56:11,956 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2023-02-16 02:56:13,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:13,028 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-02-16 02:56:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 02:56:13,029 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) Word has length 132 [2023-02-16 02:56:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:13,029 INFO L225 Difference]: With dead ends: 54 [2023-02-16 02:56:13,029 INFO L226 Difference]: Without dead ends: 44 [2023-02-16 02:56:13,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 221 SyntacticMatches, 51 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=732, Invalid=8580, Unknown=0, NotChecked=0, Total=9312 [2023-02-16 02:56:13,032 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:13,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 349 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 02:56:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-16 02:56:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-16 02:56:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 10 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-16 02:56:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-02-16 02:56:13,035 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 132 [2023-02-16 02:56:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:13,035 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-02-16 02:56:13,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2023-02-16 02:56:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-02-16 02:56:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-02-16 02:56:13,036 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:13,036 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:13,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:13,248 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,SelfDestructingSolverStorable11 [2023-02-16 02:56:13,248 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash 293911358, now seen corresponding path program 10 times [2023-02-16 02:56:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:13,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466179047] [2023-02-16 02:56:13,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:56:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-02-16 02:56:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 66 proven. 574 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-02-16 02:56:15,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466179047] [2023-02-16 02:56:15,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466179047] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:15,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418692589] [2023-02-16 02:56:15,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:56:15,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:15,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:15,370 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) [2023-02-16 02:56:15,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 02:56:15,480 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:56:15,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:15,484 WARN L261 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 241 conjunts are in the unsatisfiable core [2023-02-16 02:56:15,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 9 proven. 567 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-02-16 02:56:16,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 32 proven. 982 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-16 02:56:21,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418692589] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:21,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:21,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 39] total 78 [2023-02-16 02:56:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950680211] [2023-02-16 02:56:21,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:21,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-02-16 02:56:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:21,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-02-16 02:56:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=5710, Unknown=0, NotChecked=0, Total=6006 [2023-02-16 02:56:21,281 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2023-02-16 02:56:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:22,637 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-02-16 02:56:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-16 02:56:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) Word has length 146 [2023-02-16 02:56:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:22,638 INFO L225 Difference]: With dead ends: 57 [2023-02-16 02:56:22,638 INFO L226 Difference]: Without dead ends: 47 [2023-02-16 02:56:22,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 243 SyntacticMatches, 59 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3410 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=822, Invalid=10098, Unknown=0, NotChecked=0, Total=10920 [2023-02-16 02:56:22,639 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 116 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:22,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 603 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 02:56:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-16 02:56:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-02-16 02:56:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-02-16 02:56:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2023-02-16 02:56:22,643 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 146 [2023-02-16 02:56:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:22,645 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2023-02-16 02:56:22,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2023-02-16 02:56:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2023-02-16 02:56:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-02-16 02:56:22,647 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:22,647 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:22,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-16 02:56:22,853 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,SelfDestructingSolverStorable12 [2023-02-16 02:56:22,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1024592276, now seen corresponding path program 11 times [2023-02-16 02:56:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:22,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380333762] [2023-02-16 02:56:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:56:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-16 02:56:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 74 proven. 698 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-02-16 02:56:25,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380333762] [2023-02-16 02:56:25,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380333762] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:25,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546273711] [2023-02-16 02:56:25,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 02:56:25,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:25,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:25,323 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) [2023-02-16 02:56:25,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 02:56:25,461 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-02-16 02:56:25,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:25,466 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 265 conjunts are in the unsatisfiable core [2023-02-16 02:56:25,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 10 proven. 690 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2023-02-16 02:56:27,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 35 proven. 1211 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-02-16 02:56:32,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546273711] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:32,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:32,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 42] total 84 [2023-02-16 02:56:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384113504] [2023-02-16 02:56:32,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:32,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-02-16 02:56:32,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-02-16 02:56:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=6652, Unknown=0, NotChecked=0, Total=6972 [2023-02-16 02:56:32,609 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2023-02-16 02:56:33,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:33,888 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2023-02-16 02:56:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-16 02:56:33,888 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) Word has length 160 [2023-02-16 02:56:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:33,889 INFO L225 Difference]: With dead ends: 60 [2023-02-16 02:56:33,889 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 02:56:33,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 269 SyntacticMatches, 63 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3841 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=916, Invalid=11740, Unknown=0, NotChecked=0, Total=12656 [2023-02-16 02:56:33,891 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:33,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 458 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 02:56:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 02:56:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-16 02:56:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-16 02:56:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-02-16 02:56:33,894 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 160 [2023-02-16 02:56:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:33,895 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-02-16 02:56:33,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2023-02-16 02:56:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-02-16 02:56:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-02-16 02:56:33,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:33,896 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:33,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:34,101 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,SelfDestructingSolverStorable13 [2023-02-16 02:56:34,101 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1140202146, now seen corresponding path program 12 times [2023-02-16 02:56:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:34,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699406294] [2023-02-16 02:56:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:56:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-02-16 02:56:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 82 proven. 834 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2023-02-16 02:56:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:36,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699406294] [2023-02-16 02:56:36,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699406294] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:36,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95822634] [2023-02-16 02:56:36,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 02:56:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:37,010 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) [2023-02-16 02:56:37,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 02:56:37,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-02-16 02:56:37,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:56:37,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 289 conjunts are in the unsatisfiable core [2023-02-16 02:56:37,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 11 proven. 825 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2023-02-16 02:56:38,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 38 proven. 1464 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-02-16 02:56:44,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95822634] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:44,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:44,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 45] total 90 [2023-02-16 02:56:44,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767354692] [2023-02-16 02:56:44,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-02-16 02:56:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-02-16 02:56:44,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=7666, Unknown=0, NotChecked=0, Total=8010 [2023-02-16 02:56:44,258 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2023-02-16 02:56:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:45,352 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-02-16 02:56:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-16 02:56:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) Word has length 174 [2023-02-16 02:56:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:45,355 INFO L225 Difference]: With dead ends: 63 [2023-02-16 02:56:45,355 INFO L226 Difference]: Without dead ends: 53 [2023-02-16 02:56:45,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 291 SyntacticMatches, 71 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4446 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1014, Invalid=13506, Unknown=0, NotChecked=0, Total=14520 [2023-02-16 02:56:45,358 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 293 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:45,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 526 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 02:56:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-16 02:56:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-16 02:56:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 13 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-02-16 02:56:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-02-16 02:56:45,370 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 174 [2023-02-16 02:56:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:45,370 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-02-16 02:56:45,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2023-02-16 02:56:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-02-16 02:56:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-02-16 02:56:45,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:45,376 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:45,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:45,582 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,SelfDestructingSolverStorable14 [2023-02-16 02:56:45,582 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 831471020, now seen corresponding path program 13 times [2023-02-16 02:56:45,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972577414] [2023-02-16 02:56:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:56:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-16 02:56:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 90 proven. 982 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2023-02-16 02:56:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:56:49,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972577414] [2023-02-16 02:56:49,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972577414] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:56:49,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76938590] [2023-02-16 02:56:49,077 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 02:56:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:56:49,085 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) [2023-02-16 02:56:49,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 02:56:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:49,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 313 conjunts are in the unsatisfiable core [2023-02-16 02:56:49,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:56:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 12 proven. 972 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2023-02-16 02:56:50,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:56:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 41 proven. 1741 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2023-02-16 02:56:56,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76938590] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:56:56,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:56:56,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 96 [2023-02-16 02:56:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671285973] [2023-02-16 02:56:56,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:56:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-16 02:56:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:56:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-16 02:56:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=8752, Unknown=0, NotChecked=0, Total=9120 [2023-02-16 02:56:56,846 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2023-02-16 02:56:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:56:58,629 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-02-16 02:56:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-16 02:56:58,629 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) Word has length 188 [2023-02-16 02:56:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:56:58,630 INFO L225 Difference]: With dead ends: 66 [2023-02-16 02:56:58,630 INFO L226 Difference]: Without dead ends: 56 [2023-02-16 02:56:58,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 312 SyntacticMatches, 80 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5292 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1116, Invalid=15396, Unknown=0, NotChecked=0, Total=16512 [2023-02-16 02:56:58,632 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 91 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 02:56:58,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 602 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 02:56:58,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-16 02:56:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-16 02:56:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2023-02-16 02:56:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-02-16 02:56:58,634 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 188 [2023-02-16 02:56:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:56:58,635 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-02-16 02:56:58,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2023-02-16 02:56:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-02-16 02:56:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-02-16 02:56:58,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:56:58,635 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:56:58,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-16 02:56:58,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:56:58,845 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:56:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:56:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash -55195778, now seen corresponding path program 14 times [2023-02-16 02:56:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:56:58,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074463194] [2023-02-16 02:56:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:56:58,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:56:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:59,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:56:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:56:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:56:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-02-16 02:57:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 98 proven. 1142 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-02-16 02:57:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:57:02,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074463194] [2023-02-16 02:57:02,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074463194] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:57:02,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790961917] [2023-02-16 02:57:02,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:57:02,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:57:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:57:02,914 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) [2023-02-16 02:57:02,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 02:57:03,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:57:03,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:57:03,132 WARN L261 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 337 conjunts are in the unsatisfiable core [2023-02-16 02:57:03,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:57:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 13 proven. 1131 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2023-02-16 02:57:04,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:57:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 44 proven. 2042 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-02-16 02:57:13,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790961917] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:57:13,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:57:13,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 51] total 102 [2023-02-16 02:57:13,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572649812] [2023-02-16 02:57:13,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:57:13,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-02-16 02:57:13,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:57:13,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-02-16 02:57:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=9910, Unknown=0, NotChecked=0, Total=10302 [2023-02-16 02:57:13,257 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) [2023-02-16 02:57:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:57:14,954 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2023-02-16 02:57:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-16 02:57:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) Word has length 202 [2023-02-16 02:57:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:57:14,955 INFO L225 Difference]: With dead ends: 69 [2023-02-16 02:57:14,955 INFO L226 Difference]: Without dead ends: 59 [2023-02-16 02:57:14,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 340 SyntacticMatches, 82 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5725 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1222, Invalid=17410, Unknown=0, NotChecked=0, Total=18632 [2023-02-16 02:57:14,957 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 336 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 02:57:14,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 923 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 02:57:14,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-16 02:57:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-16 02:57:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 15 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2023-02-16 02:57:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-02-16 02:57:14,967 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 202 [2023-02-16 02:57:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:57:14,967 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-02-16 02:57:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) [2023-02-16 02:57:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-02-16 02:57:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-02-16 02:57:14,968 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:57:14,969 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:57:14,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-16 02:57:15,176 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,SelfDestructingSolverStorable16 [2023-02-16 02:57:15,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:57:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:57:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 361008364, now seen corresponding path program 15 times [2023-02-16 02:57:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:57:15,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937761470] [2023-02-16 02:57:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:57:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:57:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:57:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:17,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-02-16 02:57:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 106 proven. 1314 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2023-02-16 02:57:20,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:57:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937761470] [2023-02-16 02:57:20,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937761470] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:57:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166953182] [2023-02-16 02:57:20,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:57:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:57:20,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:57:20,418 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) [2023-02-16 02:57:20,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-16 02:57:20,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2023-02-16 02:57:20,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:57:20,712 WARN L261 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 361 conjunts are in the unsatisfiable core [2023-02-16 02:57:20,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:57:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 14 proven. 1302 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2023-02-16 02:57:22,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:57:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 47 proven. 2367 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-02-16 02:57:31,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166953182] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:57:31,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:57:31,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 54] total 108 [2023-02-16 02:57:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741649329] [2023-02-16 02:57:31,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:57:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-02-16 02:57:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:57:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-02-16 02:57:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=11140, Unknown=0, NotChecked=0, Total=11556 [2023-02-16 02:57:31,681 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) [2023-02-16 02:57:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:57:33,918 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2023-02-16 02:57:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-16 02:57:33,918 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) Word has length 216 [2023-02-16 02:57:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:57:33,919 INFO L225 Difference]: With dead ends: 72 [2023-02-16 02:57:33,919 INFO L226 Difference]: Without dead ends: 62 [2023-02-16 02:57:33,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 361 SyntacticMatches, 91 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6639 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1332, Invalid=19548, Unknown=0, NotChecked=0, Total=20880 [2023-02-16 02:57:33,921 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 549 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 02:57:33,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 923 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 02:57:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-16 02:57:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-16 02:57:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 16 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-02-16 02:57:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-02-16 02:57:33,924 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 216 [2023-02-16 02:57:33,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:57:33,926 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-02-16 02:57:33,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) [2023-02-16 02:57:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-02-16 02:57:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-02-16 02:57:33,928 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:57:33,928 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:57:33,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-16 02:57:34,134 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,SelfDestructingSolverStorable17 [2023-02-16 02:57:34,135 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:57:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:57:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash -500866658, now seen corresponding path program 16 times [2023-02-16 02:57:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:57:34,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070423092] [2023-02-16 02:57:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:57:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:57:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:57:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-16 02:57:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:38,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 114 proven. 1498 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2023-02-16 02:57:39,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:57:39,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070423092] [2023-02-16 02:57:39,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070423092] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:57:39,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844596108] [2023-02-16 02:57:39,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:57:39,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:57:39,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:57:39,715 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) [2023-02-16 02:57:39,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-16 02:57:40,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:57:40,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:57:40,038 WARN L261 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 385 conjunts are in the unsatisfiable core [2023-02-16 02:57:40,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:57:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 15 proven. 1485 refuted. 0 times theorem prover too weak. 1850 trivial. 0 not checked. [2023-02-16 02:57:42,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:57:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 50 proven. 2716 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-02-16 02:57:51,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844596108] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:57:51,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:57:51,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 57] total 114 [2023-02-16 02:57:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297934804] [2023-02-16 02:57:51,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:57:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-02-16 02:57:51,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:57:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-02-16 02:57:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=12442, Unknown=0, NotChecked=0, Total=12882 [2023-02-16 02:57:51,998 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) [2023-02-16 02:57:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:57:53,916 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2023-02-16 02:57:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-16 02:57:53,917 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) Word has length 230 [2023-02-16 02:57:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:57:53,918 INFO L225 Difference]: With dead ends: 75 [2023-02-16 02:57:53,918 INFO L226 Difference]: Without dead ends: 65 [2023-02-16 02:57:53,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 386 SyntacticMatches, 96 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7315 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1446, Invalid=21810, Unknown=0, NotChecked=0, Total=23256 [2023-02-16 02:57:53,921 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 319 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 02:57:53,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 915 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 02:57:53,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-16 02:57:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-02-16 02:57:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-02-16 02:57:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-02-16 02:57:53,931 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 230 [2023-02-16 02:57:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:57:53,931 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-02-16 02:57:53,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) [2023-02-16 02:57:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-02-16 02:57:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-02-16 02:57:53,936 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:57:53,936 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:57:53,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-16 02:57:54,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:57:54,142 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:57:54,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:57:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1515658196, now seen corresponding path program 17 times [2023-02-16 02:57:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:57:54,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246094690] [2023-02-16 02:57:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:57:54,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:57:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:57:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-02-16 02:57:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:57:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:57:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 122 proven. 1694 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2023-02-16 02:58:00,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:58:00,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246094690] [2023-02-16 02:58:00,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246094690] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:58:00,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786419142] [2023-02-16 02:58:00,528 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 02:58:00,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:58:00,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:58:00,533 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:58:00,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-16 02:58:00,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2023-02-16 02:58:00,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:58:00,903 WARN L261 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 409 conjunts are in the unsatisfiable core [2023-02-16 02:58:00,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:58:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 16 proven. 1680 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2023-02-16 02:58:02,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:58:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 53 proven. 3089 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2023-02-16 02:58:13,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786419142] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:58:13,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:58:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 60] total 120 [2023-02-16 02:58:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024827953] [2023-02-16 02:58:13,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:58:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-02-16 02:58:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:58:13,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-02-16 02:58:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=13816, Unknown=0, NotChecked=0, Total=14280 [2023-02-16 02:58:13,676 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) [2023-02-16 02:58:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:58:16,072 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-02-16 02:58:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-16 02:58:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) Word has length 244 [2023-02-16 02:58:16,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:58:16,078 INFO L225 Difference]: With dead ends: 78 [2023-02-16 02:58:16,078 INFO L226 Difference]: Without dead ends: 68 [2023-02-16 02:58:16,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 412 SyntacticMatches, 100 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7944 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1564, Invalid=24196, Unknown=0, NotChecked=0, Total=25760 [2023-02-16 02:58:16,081 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 327 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:58:16,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1382 Invalid, 3405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3241 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-16 02:58:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-16 02:58:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-16 02:58:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-02-16 02:58:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-02-16 02:58:16,084 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 244 [2023-02-16 02:58:16,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:58:16,085 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-02-16 02:58:16,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) [2023-02-16 02:58:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-02-16 02:58:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-02-16 02:58:16,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:58:16,086 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:58:16,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-16 02:58:16,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:58:16,292 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:58:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:58:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1594510402, now seen corresponding path program 18 times [2023-02-16 02:58:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:58:16,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185114795] [2023-02-16 02:58:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:58:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:58:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:58:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:19,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-02-16 02:58:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:21,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:22,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 130 proven. 1902 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2023-02-16 02:58:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:58:23,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185114795] [2023-02-16 02:58:23,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185114795] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:58:23,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502204053] [2023-02-16 02:58:23,725 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 02:58:23,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:58:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:58:23,727 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:58:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-16 02:58:24,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-02-16 02:58:24,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:58:24,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 433 conjunts are in the unsatisfiable core [2023-02-16 02:58:24,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:58:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 17 proven. 1887 refuted. 0 times theorem prover too weak. 2368 trivial. 0 not checked. [2023-02-16 02:58:26,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:58:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 56 proven. 3486 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-02-16 02:58:39,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502204053] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:58:39,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:58:39,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 63] total 126 [2023-02-16 02:58:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407142820] [2023-02-16 02:58:39,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:58:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-02-16 02:58:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:58:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-02-16 02:58:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=15262, Unknown=0, NotChecked=0, Total=15750 [2023-02-16 02:58:39,417 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 126 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 69 states have internal predecessors, (168), 24 states have call successors, (24), 1 states have call predecessors, (24), 37 states have return successors, (58), 57 states have call predecessors, (58), 24 states have call successors, (58) [2023-02-16 02:58:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:58:41,887 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2023-02-16 02:58:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-02-16 02:58:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 69 states have internal predecessors, (168), 24 states have call successors, (24), 1 states have call predecessors, (24), 37 states have return successors, (58), 57 states have call predecessors, (58), 24 states have call successors, (58) Word has length 258 [2023-02-16 02:58:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:58:41,888 INFO L225 Difference]: With dead ends: 81 [2023-02-16 02:58:41,888 INFO L226 Difference]: Without dead ends: 71 [2023-02-16 02:58:41,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 432 SyntacticMatches, 110 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9051 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1686, Invalid=26706, Unknown=0, NotChecked=0, Total=28392 [2023-02-16 02:58:41,891 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 421 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 3351 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:58:41,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1656 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3351 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-16 02:58:41,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-16 02:58:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-02-16 02:58:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-02-16 02:58:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-02-16 02:58:41,894 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 258 [2023-02-16 02:58:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:58:41,894 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-02-16 02:58:41,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 69 states have internal predecessors, (168), 24 states have call successors, (24), 1 states have call predecessors, (24), 37 states have return successors, (58), 57 states have call predecessors, (58), 24 states have call successors, (58) [2023-02-16 02:58:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-02-16 02:58:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-02-16 02:58:41,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:58:41,896 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:58:41,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-16 02:58:42,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:58:42,103 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:58:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:58:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -623426708, now seen corresponding path program 19 times [2023-02-16 02:58:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:58:42,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614705993] [2023-02-16 02:58:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:58:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:58:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:58:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-02-16 02:58:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:49,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:58:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 138 proven. 2122 refuted. 0 times theorem prover too weak. 2515 trivial. 0 not checked. [2023-02-16 02:58:50,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:58:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614705993] [2023-02-16 02:58:50,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614705993] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:58:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607010079] [2023-02-16 02:58:50,558 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 02:58:50,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:58:50,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:58:50,569 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:58:50,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-16 02:58:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:58:51,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 457 conjunts are in the unsatisfiable core [2023-02-16 02:58:51,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:58:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 18 proven. 2106 refuted. 0 times theorem prover too weak. 2651 trivial. 0 not checked. [2023-02-16 02:58:53,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:59:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 59 proven. 3907 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2023-02-16 02:59:06,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607010079] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:59:06,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:59:06,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 66] total 132 [2023-02-16 02:59:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675100053] [2023-02-16 02:59:06,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:59:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2023-02-16 02:59:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:59:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2023-02-16 02:59:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=16780, Unknown=0, NotChecked=0, Total=17292 [2023-02-16 02:59:06,118 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2023-02-16 02:59:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:59:08,835 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2023-02-16 02:59:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-02-16 02:59:08,836 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) Word has length 272 [2023-02-16 02:59:08,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:59:08,842 INFO L225 Difference]: With dead ends: 84 [2023-02-16 02:59:08,842 INFO L226 Difference]: Without dead ends: 74 [2023-02-16 02:59:08,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 454 SyntacticMatches, 118 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10060 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1812, Invalid=29340, Unknown=0, NotChecked=0, Total=31152 [2023-02-16 02:59:08,848 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 728 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:59:08,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1703 Invalid, 3646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-16 02:59:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-16 02:59:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-02-16 02:59:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2023-02-16 02:59:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-02-16 02:59:08,864 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 272 [2023-02-16 02:59:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:59:08,864 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-02-16 02:59:08,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2023-02-16 02:59:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-02-16 02:59:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-02-16 02:59:08,866 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:59:08,866 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:59:08,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-16 02:59:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-16 02:59:09,072 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:59:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:59:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1136901598, now seen corresponding path program 20 times [2023-02-16 02:59:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:59:09,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996673479] [2023-02-16 02:59:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:59:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:59:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:59:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:11,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:11,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:12,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-02-16 02:59:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:17,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 146 proven. 2354 refuted. 0 times theorem prover too weak. 2806 trivial. 0 not checked. [2023-02-16 02:59:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:59:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996673479] [2023-02-16 02:59:18,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996673479] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:59:18,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859478770] [2023-02-16 02:59:18,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:59:18,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:59:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:59:18,785 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:59:18,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-16 02:59:19,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:59:19,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:59:19,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 481 conjunts are in the unsatisfiable core [2023-02-16 02:59:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:59:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 19 proven. 2337 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2023-02-16 02:59:21,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:59:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 62 proven. 4352 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2023-02-16 02:59:36,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859478770] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:59:36,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:59:36,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 69] total 138 [2023-02-16 02:59:36,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856183515] [2023-02-16 02:59:36,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:59:36,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2023-02-16 02:59:36,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:59:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2023-02-16 02:59:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=18370, Unknown=0, NotChecked=0, Total=18906 [2023-02-16 02:59:36,166 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) [2023-02-16 02:59:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:59:38,427 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2023-02-16 02:59:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-02-16 02:59:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) Word has length 286 [2023-02-16 02:59:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:59:38,428 INFO L225 Difference]: With dead ends: 87 [2023-02-16 02:59:38,428 INFO L226 Difference]: Without dead ends: 77 [2023-02-16 02:59:38,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 483 SyntacticMatches, 119 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10660 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1942, Invalid=32098, Unknown=0, NotChecked=0, Total=34040 [2023-02-16 02:59:38,431 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 258 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 02:59:38,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1077 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 02:59:38,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-16 02:59:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-16 02:59:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 21 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-02-16 02:59:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-02-16 02:59:38,435 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 286 [2023-02-16 02:59:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:59:38,435 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-02-16 02:59:38,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) [2023-02-16 02:59:38,435 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-02-16 02:59:38,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-02-16 02:59:38,436 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:59:38,436 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 40, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:59:38,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-16 02:59:38,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-02-16 02:59:38,644 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:59:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:59:38,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1075139924, now seen corresponding path program 21 times [2023-02-16 02:59:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:59:38,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189609295] [2023-02-16 02:59:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:59:38,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:59:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:59:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:45,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-02-16 02:59:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:59:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:59:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 154 proven. 2598 refuted. 0 times theorem prover too weak. 3113 trivial. 0 not checked. [2023-02-16 02:59:49,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:59:49,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189609295] [2023-02-16 02:59:49,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189609295] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:59:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491774184] [2023-02-16 02:59:49,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:59:49,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:59:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:59:49,635 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:59:49,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-16 02:59:50,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2023-02-16 02:59:50,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:59:50,266 WARN L261 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 505 conjunts are in the unsatisfiable core [2023-02-16 02:59:50,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:59:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5865 backedges. 20 proven. 2580 refuted. 0 times theorem prover too weak. 3265 trivial. 0 not checked. [2023-02-16 02:59:53,071 INFO L328 TraceCheckSpWp]: Computing backward predicates...