./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/recHanoi01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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/recHanoi01.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 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 13:04:12,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 13:04:12,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 13:04:12,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 13:04:12,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 13:04:12,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 13:04:12,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 13:04:12,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 13:04:12,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 13:04:12,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 13:04:12,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 13:04:12,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 13:04:12,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 13:04:12,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 13:04:12,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 13:04:12,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 13:04:12,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 13:04:12,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 13:04:12,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 13:04:12,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 13:04:12,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 13:04:12,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 13:04:12,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 13:04:12,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 13:04:12,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 13:04:12,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 13:04:12,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 13:04:12,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 13:04:12,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 13:04:12,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 13:04:12,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 13:04:12,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 13:04:12,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 13:04:12,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 13:04:12,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 13:04:12,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 13:04:12,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 13:04:12,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 13:04:12,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 13:04:12,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 13:04:12,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 13:04:12,422 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 13:04:12,449 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 13:04:12,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 13:04:12,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 13:04:12,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 13:04:12,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 13:04:12,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 13:04:12,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 13:04:12,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 13:04:12,465 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 13:04:12,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 13:04:12,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 13:04:12,467 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 13:04:12,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 13:04:12,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 13:04:12,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:04:12,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 13:04:12,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 13:04:12,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 13:04:12,469 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 13:04:12,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 13:04:12,469 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 13:04:12,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2023-02-14 13:04:12,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 13:04:12,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 13:04:12,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 13:04:12,670 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 13:04:12,670 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 13:04:12,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi01.c [2023-02-14 13:04:13,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 13:04:13,851 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 13:04:13,852 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.c [2023-02-14 13:04:13,858 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546dfd82d/d8dd8145a8624891bbbae0cd5413f907/FLAGe7bfeb7af [2023-02-14 13:04:13,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546dfd82d/d8dd8145a8624891bbbae0cd5413f907 [2023-02-14 13:04:13,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 13:04:13,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 13:04:13,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 13:04:13,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 13:04:13,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 13:04:13,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:04:13" (1/1) ... [2023-02-14 13:04:13,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23904b74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:13, skipping insertion in model container [2023-02-14 13:04:13,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:04:13" (1/1) ... [2023-02-14 13:04:13,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 13:04:13,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 13:04:14,015 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/recHanoi01.c[1213,1226] [2023-02-14 13:04:14,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:04:14,025 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 13:04:14,044 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/recHanoi01.c[1213,1226] [2023-02-14 13:04:14,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:04:14,056 INFO L208 MainTranslator]: Completed translation [2023-02-14 13:04:14,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14 WrapperNode [2023-02-14 13:04:14,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 13:04:14,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 13:04:14,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 13:04:14,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 13:04:14,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,080 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-02-14 13:04:14,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 13:04:14,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 13:04:14,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 13:04:14,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 13:04:14,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 13:04:14,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 13:04:14,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 13:04:14,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 13:04:14,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (1/1) ... [2023-02-14 13:04:14,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:04:14,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:14,143 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) [2023-02-14 13:04:14,164 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 [2023-02-14 13:04:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 13:04:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2023-02-14 13:04:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2023-02-14 13:04:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-02-14 13:04:14,176 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-02-14 13:04:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 13:04:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 13:04:14,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 13:04:14,226 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 13:04:14,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 13:04:14,387 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 13:04:14,391 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 13:04:14,392 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 13:04:14,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:04:14 BoogieIcfgContainer [2023-02-14 13:04:14,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 13:04:14,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 13:04:14,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 13:04:14,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 13:04:14,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:04:13" (1/3) ... [2023-02-14 13:04:14,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775ee67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:04:14, skipping insertion in model container [2023-02-14 13:04:14,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:04:14" (2/3) ... [2023-02-14 13:04:14,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775ee67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:04:14, skipping insertion in model container [2023-02-14 13:04:14,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:04:14" (3/3) ... [2023-02-14 13:04:14,415 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2023-02-14 13:04:14,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 13:04:14,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 13:04:14,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 13:04:14,484 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;@2d93ffc4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 13:04:14,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 13:04:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 13:04:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 13:04:14,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:14,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:14,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -424312916, now seen corresponding path program 1 times [2023-02-14 13:04:14,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:14,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048698499] [2023-02-14 13:04:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 13:04:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:04:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:14,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048698499] [2023-02-14 13:04:14,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048698499] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:04:14,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:04:14,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 13:04:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751671930] [2023-02-14 13:04:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:04:14,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 13:04:14,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 13:04:14,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 13:04:14,760 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 13:04:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:14,873 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-02-14 13:04:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 13:04:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-14 13:04:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:14,882 INFO L225 Difference]: With dead ends: 43 [2023-02-14 13:04:14,883 INFO L226 Difference]: Without dead ends: 23 [2023-02-14 13:04:14,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-14 13:04:14,895 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:14,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 58 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:04:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-14 13:04:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-14 13:04:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-14 13:04:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-14 13:04:14,925 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2023-02-14 13:04:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:14,926 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-14 13:04:14,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 13:04:14,926 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-14 13:04:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 13:04:14,927 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:14,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:14,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 13:04:14,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2103389423, now seen corresponding path program 1 times [2023-02-14 13:04:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:14,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937832902] [2023-02-14 13:04:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 13:04:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-14 13:04:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:15,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937832902] [2023-02-14 13:04:15,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937832902] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:15,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847776038] [2023-02-14 13:04:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:15,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:15,307 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) [2023-02-14 13:04:15,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 13:04:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:15,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 13:04:15,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-14 13:04:15,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 13:04:15,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847776038] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:15,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:15,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2023-02-14 13:04:15,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287614918] [2023-02-14 13:04:15,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:15,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 13:04:15,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:15,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 13:04:15,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-02-14 13:04:15,799 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-02-14 13:04:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:16,178 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-02-14 13:04:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 13:04:16,179 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 26 [2023-02-14 13:04:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:16,180 INFO L225 Difference]: With dead ends: 74 [2023-02-14 13:04:16,184 INFO L226 Difference]: Without dead ends: 68 [2023-02-14 13:04:16,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-02-14 13:04:16,186 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 68 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:16,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 104 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:04:16,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-14 13:04:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2023-02-14 13:04:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 34 states have internal predecessors, (36), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (33), 16 states have call predecessors, (33), 14 states have call successors, (33) [2023-02-14 13:04:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2023-02-14 13:04:16,213 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 26 [2023-02-14 13:04:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:16,213 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2023-02-14 13:04:16,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-02-14 13:04:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2023-02-14 13:04:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-14 13:04:16,215 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:16,215 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:16,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 13:04:16,422 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 [2023-02-14 13:04:16,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash 365687158, now seen corresponding path program 2 times [2023-02-14 13:04:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:16,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335248412] [2023-02-14 13:04:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 13:04:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 13:04:16,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335248412] [2023-02-14 13:04:16,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335248412] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915044661] [2023-02-14 13:04:16,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:04:16,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:16,694 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) [2023-02-14 13:04:16,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 13:04:16,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 13:04:16,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:16,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 13:04:16,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-14 13:04:16,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 13:04:17,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915044661] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:17,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:17,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 18 [2023-02-14 13:04:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816952661] [2023-02-14 13:04:17,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:17,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 13:04:17,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 13:04:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-14 13:04:17,115 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-02-14 13:04:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:17,358 INFO L93 Difference]: Finished difference Result 108 states and 169 transitions. [2023-02-14 13:04:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 13:04:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 36 [2023-02-14 13:04:17,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:17,363 INFO L225 Difference]: With dead ends: 108 [2023-02-14 13:04:17,363 INFO L226 Difference]: Without dead ends: 74 [2023-02-14 13:04:17,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-02-14 13:04:17,366 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:17,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 125 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:04:17,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-14 13:04:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2023-02-14 13:04:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2023-02-14 13:04:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2023-02-14 13:04:17,387 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 36 [2023-02-14 13:04:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:17,387 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2023-02-14 13:04:17,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-02-14 13:04:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2023-02-14 13:04:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-14 13:04:17,393 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:17,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:17,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:17,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-14 13:04:17,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:17,598 INFO L85 PathProgramCache]: Analyzing trace with hash -787037173, now seen corresponding path program 1 times [2023-02-14 13:04:17,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:17,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366672197] [2023-02-14 13:04:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:17,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 13:04:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 13:04:17,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:17,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366672197] [2023-02-14 13:04:17,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366672197] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:17,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801110877] [2023-02-14 13:04:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:17,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:17,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:17,738 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) [2023-02-14 13:04:17,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 13:04:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:17,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 13:04:17,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-14 13:04:17,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-14 13:04:18,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801110877] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:18,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:18,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 20 [2023-02-14 13:04:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46609949] [2023-02-14 13:04:18,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 13:04:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:18,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 13:04:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-02-14 13:04:18,037 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 13:04:18,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:18,200 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2023-02-14 13:04:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 13:04:18,202 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) Word has length 32 [2023-02-14 13:04:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:18,205 INFO L225 Difference]: With dead ends: 62 [2023-02-14 13:04:18,206 INFO L226 Difference]: Without dead ends: 50 [2023-02-14 13:04:18,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2023-02-14 13:04:18,208 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:18,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 81 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:04:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-14 13:04:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2023-02-14 13:04:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2023-02-14 13:04:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2023-02-14 13:04:18,223 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 32 [2023-02-14 13:04:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:18,223 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2023-02-14 13:04:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 13:04:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-02-14 13:04:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-14 13:04:18,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:18,227 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:18,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:18,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:18,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash 464974891, now seen corresponding path program 2 times [2023-02-14 13:04:18,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:18,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322542202] [2023-02-14 13:04:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:18,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-14 13:04:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-02-14 13:04:18,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322542202] [2023-02-14 13:04:18,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322542202] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722898854] [2023-02-14 13:04:18,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:04:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:18,830 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) [2023-02-14 13:04:18,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 13:04:18,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 13:04:18,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:18,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-14 13:04:18,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-02-14 13:04:19,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 13:04:19,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722898854] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:19,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:19,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 18] total 31 [2023-02-14 13:04:19,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925290315] [2023-02-14 13:04:19,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:19,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-14 13:04:19,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:19,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-14 13:04:19,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2023-02-14 13:04:19,575 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2023-02-14 13:04:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:20,620 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2023-02-14 13:04:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-14 13:04:20,621 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) Word has length 52 [2023-02-14 13:04:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:20,622 INFO L225 Difference]: With dead ends: 101 [2023-02-14 13:04:20,622 INFO L226 Difference]: Without dead ends: 97 [2023-02-14 13:04:20,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=401, Invalid=2461, Unknown=0, NotChecked=0, Total=2862 [2023-02-14 13:04:20,624 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 98 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:20,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 206 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 13:04:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-14 13:04:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2023-02-14 13:04:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 18 states have call successors, (18), 10 states have call predecessors, (18), 16 states have return successors, (44), 24 states have call predecessors, (44), 18 states have call successors, (44) [2023-02-14 13:04:20,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2023-02-14 13:04:20,634 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 52 [2023-02-14 13:04:20,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:20,634 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2023-02-14 13:04:20,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2023-02-14 13:04:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2023-02-14 13:04:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-14 13:04:20,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:20,636 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:20,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:20,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:20,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1359329167, now seen corresponding path program 3 times [2023-02-14 13:04:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:20,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923019040] [2023-02-14 13:04:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-14 13:04:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-14 13:04:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923019040] [2023-02-14 13:04:21,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923019040] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:21,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674666469] [2023-02-14 13:04:21,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 13:04:21,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:21,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:21,082 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) [2023-02-14 13:04:21,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 13:04:21,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-14 13:04:21,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:21,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 13:04:21,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-14 13:04:21,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-14 13:04:21,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674666469] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:21,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:21,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-02-14 13:04:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869932323] [2023-02-14 13:04:21,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:21,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 13:04:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 13:04:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-02-14 13:04:21,662 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2023-02-14 13:04:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:21,897 INFO L93 Difference]: Finished difference Result 142 states and 220 transitions. [2023-02-14 13:04:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 13:04:21,898 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 58 [2023-02-14 13:04:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:21,899 INFO L225 Difference]: With dead ends: 142 [2023-02-14 13:04:21,899 INFO L226 Difference]: Without dead ends: 76 [2023-02-14 13:04:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 114 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 13:04:21,901 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:21,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 96 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:04:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-14 13:04:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2023-02-14 13:04:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (35), 21 states have call predecessors, (35), 17 states have call successors, (35) [2023-02-14 13:04:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2023-02-14 13:04:21,910 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 58 [2023-02-14 13:04:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:21,910 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2023-02-14 13:04:21,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2023-02-14 13:04:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2023-02-14 13:04:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-14 13:04:21,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:21,911 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:21,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-14 13:04:22,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:22,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash 296645163, now seen corresponding path program 4 times [2023-02-14 13:04:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:22,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546479690] [2023-02-14 13:04:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:22,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-14 13:04:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 42 proven. 135 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-02-14 13:04:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546479690] [2023-02-14 13:04:22,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546479690] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:22,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729356716] [2023-02-14 13:04:22,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 13:04:22,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:22,431 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) [2023-02-14 13:04:22,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 13:04:22,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 13:04:22,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:22,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 13:04:22,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 125 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-02-14 13:04:22,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 135 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2023-02-14 13:04:23,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729356716] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:23,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:23,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-02-14 13:04:23,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301073239] [2023-02-14 13:04:23,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 13:04:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 13:04:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-02-14 13:04:23,075 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-14 13:04:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:23,343 INFO L93 Difference]: Finished difference Result 117 states and 174 transitions. [2023-02-14 13:04:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 13:04:23,344 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) Word has length 92 [2023-02-14 13:04:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:23,345 INFO L225 Difference]: With dead ends: 117 [2023-02-14 13:04:23,345 INFO L226 Difference]: Without dead ends: 71 [2023-02-14 13:04:23,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 196 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2023-02-14 13:04:23,346 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:23,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 104 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:04:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-14 13:04:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-14 13:04:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (32), 19 states have call predecessors, (32), 17 states have call successors, (32) [2023-02-14 13:04:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2023-02-14 13:04:23,353 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 92 [2023-02-14 13:04:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:23,353 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2023-02-14 13:04:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-14 13:04:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2023-02-14 13:04:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-14 13:04:23,354 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:23,354 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:23,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:23,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:23,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1624983153, now seen corresponding path program 5 times [2023-02-14 13:04:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:23,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802062172] [2023-02-14 13:04:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:23,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-14 13:04:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 161 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-02-14 13:04:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:24,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802062172] [2023-02-14 13:04:24,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802062172] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:24,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48325149] [2023-02-14 13:04:24,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 13:04:24,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:24,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:24,371 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) [2023-02-14 13:04:24,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 13:04:24,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-02-14 13:04:24,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:24,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 91 conjunts are in the unsatisfiable core [2023-02-14 13:04:24,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-02-14 13:04:24,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-02-14 13:04:26,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48325149] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:26,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:26,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 32] total 51 [2023-02-14 13:04:26,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23258520] [2023-02-14 13:04:26,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:26,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-14 13:04:26,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:26,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-14 13:04:26,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2365, Unknown=0, NotChecked=0, Total=2550 [2023-02-14 13:04:26,323 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2023-02-14 13:04:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:31,398 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2023-02-14 13:04:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-14 13:04:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) Word has length 98 [2023-02-14 13:04:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:31,400 INFO L225 Difference]: With dead ends: 222 [2023-02-14 13:04:31,400 INFO L226 Difference]: Without dead ends: 218 [2023-02-14 13:04:31,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 202 SyntacticMatches, 12 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3331 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1686, Invalid=11196, Unknown=0, NotChecked=0, Total=12882 [2023-02-14 13:04:31,403 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 367 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 1015 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1015 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:31,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 498 Invalid, 4197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1015 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-14 13:04:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-14 13:04:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 179. [2023-02-14 13:04:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 97 states have internal predecessors, (105), 47 states have call successors, (47), 27 states have call predecessors, (47), 33 states have return successors, (104), 54 states have call predecessors, (104), 47 states have call successors, (104) [2023-02-14 13:04:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 256 transitions. [2023-02-14 13:04:31,440 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 256 transitions. Word has length 98 [2023-02-14 13:04:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:31,442 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 256 transitions. [2023-02-14 13:04:31,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2023-02-14 13:04:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 256 transitions. [2023-02-14 13:04:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-14 13:04:31,448 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:31,448 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:31,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:31,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:31,653 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250389, now seen corresponding path program 6 times [2023-02-14 13:04:31,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:31,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438027641] [2023-02-14 13:04:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:31,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-14 13:04:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-02-14 13:04:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438027641] [2023-02-14 13:04:31,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438027641] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313188941] [2023-02-14 13:04:31,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 13:04:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:31,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:31,966 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) [2023-02-14 13:04:31,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 13:04:32,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-14 13:04:32,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:32,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 13:04:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 72 proven. 113 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-02-14 13:04:32,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 72 proven. 132 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-02-14 13:04:32,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313188941] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:32,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:32,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-02-14 13:04:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579286172] [2023-02-14 13:04:32,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 13:04:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 13:04:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2023-02-14 13:04:32,880 INFO L87 Difference]: Start difference. First operand 179 states and 256 transitions. Second operand has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2023-02-14 13:04:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:33,217 INFO L93 Difference]: Finished difference Result 291 states and 470 transitions. [2023-02-14 13:04:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 13:04:33,217 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) Word has length 104 [2023-02-14 13:04:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:33,219 INFO L225 Difference]: With dead ends: 291 [2023-02-14 13:04:33,220 INFO L226 Difference]: Without dead ends: 181 [2023-02-14 13:04:33,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2023-02-14 13:04:33,221 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:33,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 115 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:04:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-14 13:04:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2023-02-14 13:04:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 45 states have call successors, (45), 22 states have call predecessors, (45), 29 states have return successors, (88), 52 states have call predecessors, (88), 45 states have call successors, (88) [2023-02-14 13:04:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2023-02-14 13:04:33,236 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 104 [2023-02-14 13:04:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:33,236 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2023-02-14 13:04:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2023-02-14 13:04:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2023-02-14 13:04:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-02-14 13:04:33,237 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:33,238 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:33,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:33,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-14 13:04:33,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:33,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1313628785, now seen corresponding path program 7 times [2023-02-14 13:04:33,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:33,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576729530] [2023-02-14 13:04:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:04:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-02-14 13:04:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 229 proven. 262 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2023-02-14 13:04:33,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:33,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576729530] [2023-02-14 13:04:33,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576729530] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:33,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291351642] [2023-02-14 13:04:33,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-14 13:04:33,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:33,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:33,917 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) [2023-02-14 13:04:33,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 13:04:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:34,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 13:04:34,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 268 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2023-02-14 13:04:34,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 281 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2023-02-14 13:04:34,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291351642] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:34,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:34,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 23 [2023-02-14 13:04:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117496402] [2023-02-14 13:04:34,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:34,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 13:04:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 13:04:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-02-14 13:04:34,909 INFO L87 Difference]: Start difference. First operand 157 states and 220 transitions. Second operand has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2023-02-14 13:04:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:35,212 INFO L93 Difference]: Finished difference Result 248 states and 371 transitions. [2023-02-14 13:04:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 13:04:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) Word has length 138 [2023-02-14 13:04:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:35,214 INFO L225 Difference]: With dead ends: 248 [2023-02-14 13:04:35,215 INFO L226 Difference]: Without dead ends: 178 [2023-02-14 13:04:35,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 308 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2023-02-14 13:04:35,216 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:35,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 115 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:04:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-14 13:04:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2023-02-14 13:04:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (80), 49 states have call predecessors, (80), 45 states have call successors, (80) [2023-02-14 13:04:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2023-02-14 13:04:35,230 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 138 [2023-02-14 13:04:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:35,230 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2023-02-14 13:04:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2023-02-14 13:04:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2023-02-14 13:04:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-02-14 13:04:35,232 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:35,232 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:35,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-14 13:04:35,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 149752433, now seen corresponding path program 8 times [2023-02-14 13:04:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:35,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710476358] [2023-02-14 13:04:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:04:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-14 13:04:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2023-02-14 13:04:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:35,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710476358] [2023-02-14 13:04:35,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710476358] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:35,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008336334] [2023-02-14 13:04:35,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:04:35,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:35,874 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) [2023-02-14 13:04:35,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 13:04:36,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 13:04:36,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 13:04:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 396 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2023-02-14 13:04:36,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 416 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2023-02-14 13:04:36,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008336334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:36,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:36,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-02-14 13:04:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601179321] [2023-02-14 13:04:36,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:36,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 13:04:36,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 13:04:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2023-02-14 13:04:36,965 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2023-02-14 13:04:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:04:37,328 INFO L93 Difference]: Finished difference Result 174 states and 237 transitions. [2023-02-14 13:04:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 13:04:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) Word has length 178 [2023-02-14 13:04:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:04:37,329 INFO L225 Difference]: With dead ends: 174 [2023-02-14 13:04:37,330 INFO L226 Difference]: Without dead ends: 170 [2023-02-14 13:04:37,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 398 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2023-02-14 13:04:37,331 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:04:37,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 145 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:04:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-14 13:04:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2023-02-14 13:04:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 45 states have call successors, (45), 23 states have call predecessors, (45), 28 states have return successors, (81), 50 states have call predecessors, (81), 45 states have call successors, (81) [2023-02-14 13:04:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2023-02-14 13:04:37,342 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 178 [2023-02-14 13:04:37,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:04:37,343 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2023-02-14 13:04:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2023-02-14 13:04:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2023-02-14 13:04:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-02-14 13:04:37,344 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:04:37,344 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:04:37,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 13:04:37,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-14 13:04:37,550 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:04:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:04:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2072776725, now seen corresponding path program 9 times [2023-02-14 13:04:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:04:37,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547991034] [2023-02-14 13:04:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:04:37,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:04:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:04:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:04:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:04:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:04:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:04:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-14 13:04:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:04:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:04:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 44 proven. 705 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2023-02-14 13:04:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:04:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547991034] [2023-02-14 13:04:39,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547991034] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:04:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867294026] [2023-02-14 13:04:39,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 13:04:39,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:04:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:04:39,475 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) [2023-02-14 13:04:39,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 13:04:39,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-14 13:04:39,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:04:39,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 175 conjunts are in the unsatisfiable core [2023-02-14 13:04:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:04:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2023-02-14 13:04:40,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:04:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-14 13:04:43,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867294026] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:04:43,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:04:43,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 58] total 83 [2023-02-14 13:04:43,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017396656] [2023-02-14 13:04:43,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:04:43,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-02-14 13:04:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:04:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-02-14 13:04:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6505, Unknown=0, NotChecked=0, Total=6806 [2023-02-14 13:04:43,692 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2023-02-14 13:05:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:05:09,626 INFO L93 Difference]: Finished difference Result 524 states and 792 transitions. [2023-02-14 13:05:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-02-14 13:05:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) Word has length 184 [2023-02-14 13:05:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:05:09,630 INFO L225 Difference]: With dead ends: 524 [2023-02-14 13:05:09,630 INFO L226 Difference]: Without dead ends: 520 [2023-02-14 13:05:09,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 394 SyntacticMatches, 20 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16454 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=7719, Invalid=49641, Unknown=0, NotChecked=0, Total=57360 [2023-02-14 13:05:09,638 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1407 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 10290 mSolverCounterSat, 4658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 14948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4658 IncrementalHoareTripleChecker+Valid, 10290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-02-14 13:05:09,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1343 Invalid, 14948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4658 Valid, 10290 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-14 13:05:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-02-14 13:05:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 437. [2023-02-14 13:05:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 236 states have (on average 1.0593220338983051) internal successors, (250), 232 states have internal predecessors, (250), 125 states have call successors, (125), 74 states have call predecessors, (125), 75 states have return successors, (256), 130 states have call predecessors, (256), 125 states have call successors, (256) [2023-02-14 13:05:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 631 transitions. [2023-02-14 13:05:09,683 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 631 transitions. Word has length 184 [2023-02-14 13:05:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:05:09,684 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 631 transitions. [2023-02-14 13:05:09,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2023-02-14 13:05:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 631 transitions. [2023-02-14 13:05:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-02-14 13:05:09,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:05:09,687 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:05:09,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 13:05:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-14 13:05:09,894 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:05:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:05:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1729878095, now seen corresponding path program 10 times [2023-02-14 13:05:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:05:09,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578990239] [2023-02-14 13:05:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:05:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:05:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:05:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:05:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-14 13:05:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 107 proven. 431 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2023-02-14 13:05:10,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:05:10,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578990239] [2023-02-14 13:05:10,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578990239] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:05:10,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412565379] [2023-02-14 13:05:10,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 13:05:10,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:05:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:05:10,356 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) [2023-02-14 13:05:10,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 13:05:10,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 13:05:10,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:05:10,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 13:05:10,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:05:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 415 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2023-02-14 13:05:10,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:05:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 447 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2023-02-14 13:05:11,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412565379] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:05:11,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:05:11,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-02-14 13:05:11,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437750133] [2023-02-14 13:05:11,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:05:11,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-14 13:05:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:05:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-14 13:05:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2023-02-14 13:05:11,761 INFO L87 Difference]: Start difference. First operand 437 states and 631 transitions. Second operand has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2023-02-14 13:05:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:05:12,227 INFO L93 Difference]: Finished difference Result 683 states and 1088 transitions. [2023-02-14 13:05:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-14 13:05:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) Word has length 190 [2023-02-14 13:05:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:05:12,231 INFO L225 Difference]: With dead ends: 683 [2023-02-14 13:05:12,231 INFO L226 Difference]: Without dead ends: 467 [2023-02-14 13:05:12,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 422 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=503, Invalid=2253, Unknown=0, NotChecked=0, Total=2756 [2023-02-14 13:05:12,233 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:05:12,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 179 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:05:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-14 13:05:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 394. [2023-02-14 13:05:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 201 states have (on average 1.0597014925373134) internal successors, (213), 201 states have internal predecessors, (213), 119 states have call successors, (119), 59 states have call predecessors, (119), 73 states have return successors, (219), 133 states have call predecessors, (219), 119 states have call successors, (219) [2023-02-14 13:05:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 551 transitions. [2023-02-14 13:05:12,290 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 551 transitions. Word has length 190 [2023-02-14 13:05:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:05:12,290 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 551 transitions. [2023-02-14 13:05:12,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2023-02-14 13:05:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 551 transitions. [2023-02-14 13:05:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-02-14 13:05:12,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:05:12,294 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:05:12,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-14 13:05:12,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-14 13:05:12,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:05:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:05:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1351583765, now seen corresponding path program 11 times [2023-02-14 13:05:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:05:12,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45581896] [2023-02-14 13:05:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:05:12,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:05:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:05:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:12,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:05:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-14 13:05:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:05:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-02-14 13:05:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 244 proven. 1105 refuted. 0 times theorem prover too weak. 7423 trivial. 0 not checked. [2023-02-14 13:05:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:05:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45581896] [2023-02-14 13:05:13,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45581896] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:05:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622598993] [2023-02-14 13:05:13,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 13:05:13,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:05:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:05:13,403 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) [2023-02-14 13:05:13,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-14 13:05:13,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2023-02-14 13:05:13,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:05:13,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 13:05:13,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:05:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 839 proven. 501 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2023-02-14 13:05:13,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:05:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 842 proven. 533 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2023-02-14 13:05:15,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622598993] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:05:15,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:05:15,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-02-14 13:05:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88042995] [2023-02-14 13:05:15,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:05:15,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-14 13:05:15,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:05:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-14 13:05:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2023-02-14 13:05:15,370 INFO L87 Difference]: Start difference. First operand 394 states and 551 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2023-02-14 13:05:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:05:15,839 INFO L93 Difference]: Finished difference Result 529 states and 786 transitions. [2023-02-14 13:05:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-14 13:05:15,839 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) Word has length 344 [2023-02-14 13:05:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:05:15,843 INFO L225 Difference]: With dead ends: 529 [2023-02-14 13:05:15,844 INFO L226 Difference]: Without dead ends: 423 [2023-02-14 13:05:15,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 792 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=509, Invalid=2353, Unknown=0, NotChecked=0, Total=2862 [2023-02-14 13:05:15,845 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 70 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:05:15,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 164 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:05:15,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-02-14 13:05:15,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 394. [2023-02-14 13:05:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 202 states have (on average 1.0594059405940595) internal successors, (214), 202 states have internal predecessors, (214), 119 states have call successors, (119), 60 states have call predecessors, (119), 72 states have return successors, (204), 131 states have call predecessors, (204), 119 states have call successors, (204) [2023-02-14 13:05:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 537 transitions. [2023-02-14 13:05:15,888 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 537 transitions. Word has length 344 [2023-02-14 13:05:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:05:15,888 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 537 transitions. [2023-02-14 13:05:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2023-02-14 13:05:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 537 transitions. [2023-02-14 13:05:15,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-02-14 13:05:15,892 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:05:15,893 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:05:15,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-14 13:05:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-14 13:05:16,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 13:05:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:05:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash -430264399, now seen corresponding path program 12 times [2023-02-14 13:05:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:05:16,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907414550] [2023-02-14 13:05:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:05:16,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:05:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 13:05:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:05:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-14 13:05:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 13:05:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 13:05:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 13:05:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 13:05:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-02-14 13:05:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 13:05:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:05:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 92 proven. 2940 refuted. 0 times theorem prover too weak. 5762 trivial. 0 not checked. [2023-02-14 13:05:21,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:05:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907414550] [2023-02-14 13:05:21,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907414550] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:05:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153175334] [2023-02-14 13:05:21,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 13:05:21,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:05:21,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:05:21,917 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) [2023-02-14 13:05:21,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-14 13:05:22,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2023-02-14 13:05:22,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:05:22,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 339 conjunts are in the unsatisfiable core [2023-02-14 13:05:22,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:05:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2023-02-14 13:05:23,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:05:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 8644 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-02-14 13:05:31,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153175334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:05:31,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 13:05:31,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 108] total 139 [2023-02-14 13:05:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671349375] [2023-02-14 13:05:31,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 13:05:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-02-14 13:05:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:05:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-02-14 13:05:31,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=18689, Unknown=0, NotChecked=0, Total=19182 [2023-02-14 13:05:31,865 INFO L87 Difference]: Start difference. First operand 394 states and 537 transitions. Second operand has 139 states, 104 states have (on average 1.7211538461538463) internal successors, (179), 106 states have internal predecessors, (179), 54 states have call successors, (76), 35 states have call predecessors, (76), 68 states have return successors, (91), 70 states have call predecessors, (91), 54 states have call successors, (91)