./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 2329fc70 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-2329fc7 [2023-02-14 01:29:05,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 01:29:05,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 01:29:05,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 01:29:05,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 01:29:05,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 01:29:05,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 01:29:05,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 01:29:05,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 01:29:05,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 01:29:05,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 01:29:05,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 01:29:05,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 01:29:05,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 01:29:05,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 01:29:05,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 01:29:05,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 01:29:05,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 01:29:05,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 01:29:05,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 01:29:05,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 01:29:05,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 01:29:05,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 01:29:05,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 01:29:05,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 01:29:05,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 01:29:05,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 01:29:05,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 01:29:05,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 01:29:05,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 01:29:05,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 01:29:05,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 01:29:05,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 01:29:05,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 01:29:05,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 01:29:05,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 01:29:05,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 01:29:05,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 01:29:05,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 01:29:05,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 01:29:05,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 01:29:05,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 01:29:05,874 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 01:29:05,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 01:29:05,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 01:29:05,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 01:29:05,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 01:29:05,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 01:29:05,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 01:29:05,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 01:29:05,876 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 01:29:05,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 01:29:05,877 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 01:29:05,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 01:29:05,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 01:29:05,879 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 01:29:05,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 01:29:05,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 01:29:05,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 01:29:05,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 01:29:05,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 01:29:05,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 01:29:05,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 01:29:05,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 01:29:05,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 01:29:05,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 01:29:05,880 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 01:29:05,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 01:29:05,881 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 01:29:05,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 01:29:05,881 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 01:29:05,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2023-02-14 01:29:06,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 01:29:06,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 01:29:06,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 01:29:06,069 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 01:29:06,069 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 01:29:06,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi01.c [2023-02-14 01:29:07,029 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 01:29:07,169 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 01:29:07,169 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.c [2023-02-14 01:29:07,173 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb5a3e2a/b7bb5875ef9f4a8a88000502235b92fa/FLAG5e0b3216b [2023-02-14 01:29:07,182 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb5a3e2a/b7bb5875ef9f4a8a88000502235b92fa [2023-02-14 01:29:07,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 01:29:07,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 01:29:07,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 01:29:07,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 01:29:07,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 01:29:07,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc025e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07, skipping insertion in model container [2023-02-14 01:29:07,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 01:29:07,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 01:29:07,306 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 01:29:07,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 01:29:07,320 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 01:29:07,335 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 01:29:07,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 01:29:07,345 INFO L208 MainTranslator]: Completed translation [2023-02-14 01:29:07,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07 WrapperNode [2023-02-14 01:29:07,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 01:29:07,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 01:29:07,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 01:29:07,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 01:29:07,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,368 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-02-14 01:29:07,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 01:29:07,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 01:29:07,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 01:29:07,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 01:29:07,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 01:29:07,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 01:29:07,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 01:29:07,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 01:29:07,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (1/1) ... [2023-02-14 01:29:07,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 01:29:07,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:07,433 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 01:29:07,456 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 01:29:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 01:29:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2023-02-14 01:29:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2023-02-14 01:29:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-02-14 01:29:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-02-14 01:29:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 01:29:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 01:29:07,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 01:29:07,517 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 01:29:07,518 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 01:29:07,616 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 01:29:07,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 01:29:07,623 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 01:29:07,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:29:07 BoogieIcfgContainer [2023-02-14 01:29:07,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 01:29:07,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 01:29:07,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 01:29:07,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 01:29:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:29:07" (1/3) ... [2023-02-14 01:29:07,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2086c40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:29:07, skipping insertion in model container [2023-02-14 01:29:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:07" (2/3) ... [2023-02-14 01:29:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2086c40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:29:07, skipping insertion in model container [2023-02-14 01:29:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:29:07" (3/3) ... [2023-02-14 01:29:07,631 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2023-02-14 01:29:07,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 01:29:07,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 01:29:07,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 01:29:07,692 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;@4d7b9ef3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 01:29:07,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 01:29:07,696 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 01:29:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 01:29:07,703 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:07,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:29:07,705 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash -424312916, now seen corresponding path program 1 times [2023-02-14 01:29:07,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:07,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13554612] [2023-02-14 01:29:07,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:07,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 01:29:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:07,941 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 01:29:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13554612] [2023-02-14 01:29:07,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13554612] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 01:29:07,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 01:29:07,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 01:29:07,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185565970] [2023-02-14 01:29:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 01:29:07,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 01:29:07,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:07,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 01:29:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 01:29:07,997 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 01:29:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:08,120 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-02-14 01:29:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 01:29:08,122 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 01:29:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:08,127 INFO L225 Difference]: With dead ends: 43 [2023-02-14 01:29:08,130 INFO L226 Difference]: Without dead ends: 23 [2023-02-14 01:29:08,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-14 01:29:08,136 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 01:29:08,137 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 01:29:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-14 01:29:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-14 01:29:08,161 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 01:29:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-14 01:29:08,162 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2023-02-14 01:29:08,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:08,162 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-14 01:29:08,162 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 01:29:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-14 01:29:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 01:29:08,164 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:08,164 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 01:29:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 01:29:08,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2103389423, now seen corresponding path program 1 times [2023-02-14 01:29:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:08,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879773051] [2023-02-14 01:29:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:08,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 01:29:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:08,472 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 01:29:08,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:08,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879773051] [2023-02-14 01:29:08,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879773051] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:08,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726603235] [2023-02-14 01:29:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:08,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:08,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:08,477 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 01:29:08,478 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 01:29:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:08,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 01:29:08,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:08,672 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 01:29:08,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:08,871 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 01:29:08,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726603235] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:08,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:08,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2023-02-14 01:29:08,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374228115] [2023-02-14 01:29:08,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:08,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 01:29:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 01:29:08,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-02-14 01:29:08,875 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 01:29:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:09,163 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2023-02-14 01:29:09,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 01:29:09,163 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 01:29:09,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:09,167 INFO L225 Difference]: With dead ends: 74 [2023-02-14 01:29:09,168 INFO L226 Difference]: Without dead ends: 68 [2023-02-14 01:29:09,168 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 01:29:09,169 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 01:29:09,170 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 01:29:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-14 01:29:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2023-02-14 01:29:09,194 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 01:29:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2023-02-14 01:29:09,198 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 26 [2023-02-14 01:29:09,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:09,199 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2023-02-14 01:29:09,199 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 01:29:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2023-02-14 01:29:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-14 01:29:09,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:09,203 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 01:29:09,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 01:29:09,408 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 01:29:09,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 365687158, now seen corresponding path program 2 times [2023-02-14 01:29:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344568635] [2023-02-14 01:29:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:09,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 01:29:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:09,601 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 01:29:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:09,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344568635] [2023-02-14 01:29:09,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344568635] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975917214] [2023-02-14 01:29:09,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 01:29:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:09,605 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 01:29:09,608 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 01:29:09,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 01:29:09,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:09,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 01:29:09,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:09,725 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 01:29:09,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:10,006 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 01:29:10,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975917214] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:10,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:10,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 18 [2023-02-14 01:29:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265424662] [2023-02-14 01:29:10,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:10,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-14 01:29:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-14 01:29:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-14 01:29:10,008 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 01:29:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:10,254 INFO L93 Difference]: Finished difference Result 108 states and 169 transitions. [2023-02-14 01:29:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 01:29:10,255 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 01:29:10,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:10,256 INFO L225 Difference]: With dead ends: 108 [2023-02-14 01:29:10,256 INFO L226 Difference]: Without dead ends: 74 [2023-02-14 01:29:10,256 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 01:29:10,257 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 01:29:10,257 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 01:29:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-14 01:29:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2023-02-14 01:29:10,263 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 01:29:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2023-02-14 01:29:10,264 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 36 [2023-02-14 01:29:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:10,264 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2023-02-14 01:29:10,265 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 01:29:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2023-02-14 01:29:10,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-14 01:29:10,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:10,266 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 01:29:10,287 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 01:29:10,473 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 01:29:10,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:10,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:10,474 INFO L85 PathProgramCache]: Analyzing trace with hash -787037173, now seen corresponding path program 1 times [2023-02-14 01:29:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:10,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200032715] [2023-02-14 01:29:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 01:29:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,628 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 01:29:10,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:10,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200032715] [2023-02-14 01:29:10,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200032715] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:10,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939271042] [2023-02-14 01:29:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:10,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:10,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:10,653 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 01:29:10,654 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 01:29:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:10,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 01:29:10,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:10,742 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 01:29:10,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:10,952 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 01:29:10,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939271042] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:10,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:10,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 20 [2023-02-14 01:29:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406000311] [2023-02-14 01:29:10,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:10,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 01:29:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 01:29:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-02-14 01:29:10,955 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 01:29:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:11,104 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2023-02-14 01:29:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 01:29:11,105 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 01:29:11,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:11,106 INFO L225 Difference]: With dead ends: 62 [2023-02-14 01:29:11,106 INFO L226 Difference]: Without dead ends: 50 [2023-02-14 01:29:11,106 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 01:29:11,107 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 01:29:11,107 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 01:29:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-14 01:29:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2023-02-14 01:29:11,112 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 01:29:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2023-02-14 01:29:11,113 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 32 [2023-02-14 01:29:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:11,113 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2023-02-14 01:29:11,113 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 01:29:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-02-14 01:29:11,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-14 01:29:11,114 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:11,114 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 01:29:11,131 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 01:29:11,323 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 01:29:11,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 464974891, now seen corresponding path program 2 times [2023-02-14 01:29:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000779762] [2023-02-14 01:29:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-14 01:29:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:11,801 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 01:29:11,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:11,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000779762] [2023-02-14 01:29:11,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000779762] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:11,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50591672] [2023-02-14 01:29:11,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 01:29:11,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:11,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:11,803 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 01:29:11,805 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 01:29:11,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 01:29:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:11,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-14 01:29:11,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:12,043 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 01:29:12,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:12,582 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 01:29:12,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50591672] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:12,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:12,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 18] total 31 [2023-02-14 01:29:12,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371811149] [2023-02-14 01:29:12,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-14 01:29:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-14 01:29:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2023-02-14 01:29:12,584 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 01:29:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:13,553 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2023-02-14 01:29:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-14 01:29:13,554 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 01:29:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:13,555 INFO L225 Difference]: With dead ends: 101 [2023-02-14 01:29:13,555 INFO L226 Difference]: Without dead ends: 97 [2023-02-14 01:29:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=401, Invalid=2461, Unknown=0, NotChecked=0, Total=2862 [2023-02-14 01:29:13,556 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 98 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 01:29:13,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 168 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 01:29:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-14 01:29:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2023-02-14 01:29:13,566 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 01:29:13,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2023-02-14 01:29:13,567 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 52 [2023-02-14 01:29:13,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:13,567 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2023-02-14 01:29:13,567 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 01:29:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2023-02-14 01:29:13,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-14 01:29:13,569 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:13,569 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 01:29:13,581 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 01:29:13,774 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 01:29:13,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1359329167, now seen corresponding path program 3 times [2023-02-14 01:29:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:13,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829182002] [2023-02-14 01:29:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-02-14 01:29:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:13,967 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 01:29:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:13,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829182002] [2023-02-14 01:29:13,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829182002] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:13,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151408133] [2023-02-14 01:29:13,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 01:29:13,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:13,968 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 01:29:13,970 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 01:29:14,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-14 01:29:14,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:14,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 01:29:14,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:14,078 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 01:29:14,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:14,449 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 01:29:14,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151408133] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:14,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:14,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-02-14 01:29:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091848635] [2023-02-14 01:29:14,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 01:29:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 01:29:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2023-02-14 01:29:14,451 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 01:29:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:14,689 INFO L93 Difference]: Finished difference Result 142 states and 220 transitions. [2023-02-14 01:29:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 01:29:14,690 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 01:29:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:14,690 INFO L225 Difference]: With dead ends: 142 [2023-02-14 01:29:14,690 INFO L226 Difference]: Without dead ends: 76 [2023-02-14 01:29:14,692 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 01:29:14,692 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 01:29:14,692 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 01:29:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-14 01:29:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2023-02-14 01:29:14,699 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 01:29:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2023-02-14 01:29:14,700 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 58 [2023-02-14 01:29:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:14,700 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2023-02-14 01:29:14,700 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 01:29:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2023-02-14 01:29:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-14 01:29:14,701 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:14,701 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 01:29:14,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 01:29:14,911 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 01:29:14,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 296645163, now seen corresponding path program 4 times [2023-02-14 01:29:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433201728] [2023-02-14 01:29:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-14 01:29:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:15,151 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 01:29:15,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:15,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433201728] [2023-02-14 01:29:15,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433201728] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:15,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348556825] [2023-02-14 01:29:15,152 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 01:29:15,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:15,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:15,153 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 01:29:15,155 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 01:29:15,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 01:29:15,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:15,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 01:29:15,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:15,305 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 01:29:15,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:15,784 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 01:29:15,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348556825] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:15,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:15,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2023-02-14 01:29:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261473731] [2023-02-14 01:29:15,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:15,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 01:29:15,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 01:29:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-02-14 01:29:15,786 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 01:29:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:16,050 INFO L93 Difference]: Finished difference Result 117 states and 174 transitions. [2023-02-14 01:29:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 01:29:16,051 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 01:29:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:16,052 INFO L225 Difference]: With dead ends: 117 [2023-02-14 01:29:16,052 INFO L226 Difference]: Without dead ends: 71 [2023-02-14 01:29:16,053 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 01:29:16,053 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 01:29:16,054 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 01:29:16,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-14 01:29:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-02-14 01:29:16,066 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 01:29:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2023-02-14 01:29:16,067 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 92 [2023-02-14 01:29:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:16,067 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2023-02-14 01:29:16,067 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 01:29:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2023-02-14 01:29:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-14 01:29:16,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:16,068 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 01:29:16,075 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 01:29:16,275 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 01:29:16,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1624983153, now seen corresponding path program 5 times [2023-02-14 01:29:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:16,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046608422] [2023-02-14 01:29:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-14 01:29:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:17,030 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 01:29:17,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:17,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046608422] [2023-02-14 01:29:17,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046608422] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:17,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913720381] [2023-02-14 01:29:17,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 01:29:17,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:17,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:17,032 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 01:29:17,034 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 01:29:17,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-02-14 01:29:17,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:17,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 91 conjunts are in the unsatisfiable core [2023-02-14 01:29:17,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:17,438 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 01:29:17,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:18,871 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 01:29:18,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913720381] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:18,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:18,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 32] total 51 [2023-02-14 01:29:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96660838] [2023-02-14 01:29:18,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:18,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-14 01:29:18,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:18,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-14 01:29:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2365, Unknown=0, NotChecked=0, Total=2550 [2023-02-14 01:29:18,873 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 01:29:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:23,999 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2023-02-14 01:29:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-14 01:29:24,000 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 01:29:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:24,001 INFO L225 Difference]: With dead ends: 222 [2023-02-14 01:29:24,001 INFO L226 Difference]: Without dead ends: 218 [2023-02-14 01:29:24,004 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 01:29:24,004 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 01:29:24,005 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 01:29:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-14 01:29:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 179. [2023-02-14 01:29:24,023 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 01:29:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 256 transitions. [2023-02-14 01:29:24,024 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 256 transitions. Word has length 98 [2023-02-14 01:29:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:24,024 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 256 transitions. [2023-02-14 01:29:24,025 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 01:29:24,025 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 256 transitions. [2023-02-14 01:29:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-14 01:29:24,033 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:24,033 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 01:29:24,050 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 01:29:24,243 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 01:29:24,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250389, now seen corresponding path program 6 times [2023-02-14 01:29:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:24,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455292506] [2023-02-14 01:29:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-02-14 01:29:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:24,515 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 01:29:24,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:24,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455292506] [2023-02-14 01:29:24,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455292506] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428627560] [2023-02-14 01:29:24,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 01:29:24,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:24,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:24,517 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 01:29:24,519 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 01:29:24,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-14 01:29:24,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:24,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 01:29:24,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:24,682 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 01:29:24,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:25,388 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 01:29:25,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428627560] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:25,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:25,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-02-14 01:29:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215588019] [2023-02-14 01:29:25,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 01:29:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 01:29:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2023-02-14 01:29:25,393 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 01:29:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:25,731 INFO L93 Difference]: Finished difference Result 291 states and 470 transitions. [2023-02-14 01:29:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 01:29:25,732 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 01:29:25,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:25,734 INFO L225 Difference]: With dead ends: 291 [2023-02-14 01:29:25,734 INFO L226 Difference]: Without dead ends: 181 [2023-02-14 01:29:25,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2023-02-14 01:29:25,735 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 01:29:25,735 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 01:29:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-14 01:29:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2023-02-14 01:29:25,769 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 01:29:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2023-02-14 01:29:25,770 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 104 [2023-02-14 01:29:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:25,770 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2023-02-14 01:29:25,771 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 01:29:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2023-02-14 01:29:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-02-14 01:29:25,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:25,772 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 01:29:25,781 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 01:29:25,980 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 01:29:25,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:25,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1313628785, now seen corresponding path program 7 times [2023-02-14 01:29:25,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:25,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166510591] [2023-02-14 01:29:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:29:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-02-14 01:29:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,404 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 01:29:26,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:26,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166510591] [2023-02-14 01:29:26,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166510591] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:26,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405373880] [2023-02-14 01:29:26,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-14 01:29:26,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:26,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:26,406 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 01:29:26,409 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 01:29:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:26,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 01:29:26,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:26,615 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 01:29:26,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:27,360 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 01:29:27,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405373880] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:27,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:27,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 23 [2023-02-14 01:29:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554311440] [2023-02-14 01:29:27,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:27,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 01:29:27,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 01:29:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-02-14 01:29:27,362 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 01:29:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:27,660 INFO L93 Difference]: Finished difference Result 248 states and 371 transitions. [2023-02-14 01:29:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 01:29:27,661 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 01:29:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:27,663 INFO L225 Difference]: With dead ends: 248 [2023-02-14 01:29:27,663 INFO L226 Difference]: Without dead ends: 178 [2023-02-14 01:29:27,664 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 01:29:27,664 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 01:29:27,664 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 01:29:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-14 01:29:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2023-02-14 01:29:27,678 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 01:29:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2023-02-14 01:29:27,679 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 138 [2023-02-14 01:29:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:27,680 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2023-02-14 01:29:27,680 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 01:29:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2023-02-14 01:29:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-02-14 01:29:27,692 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:27,692 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 01:29:27,698 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 01:29:27,894 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 01:29:27,894 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash 149752433, now seen corresponding path program 8 times [2023-02-14 01:29:27,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:27,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089391888] [2023-02-14 01:29:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:29:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-14 01:29:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:28,327 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 01:29:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089391888] [2023-02-14 01:29:28,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089391888] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:28,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284312610] [2023-02-14 01:29:28,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 01:29:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:28,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:28,329 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 01:29:28,347 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 01:29:28,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 01:29:28,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:28,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 01:29:28,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:28,545 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 01:29:28,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:29,484 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 01:29:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284312610] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:29,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:29,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2023-02-14 01:29:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522978351] [2023-02-14 01:29:29,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 01:29:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 01:29:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2023-02-14 01:29:29,486 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 01:29:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:29:29,865 INFO L93 Difference]: Finished difference Result 174 states and 237 transitions. [2023-02-14 01:29:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-14 01:29:29,866 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 01:29:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:29:29,867 INFO L225 Difference]: With dead ends: 174 [2023-02-14 01:29:29,867 INFO L226 Difference]: Without dead ends: 170 [2023-02-14 01:29:29,868 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 01:29:29,868 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 01:29:29,868 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 01:29:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-02-14 01:29:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2023-02-14 01:29:29,882 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 01:29:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2023-02-14 01:29:29,883 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 178 [2023-02-14 01:29:29,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:29:29,883 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2023-02-14 01:29:29,883 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 01:29:29,883 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2023-02-14 01:29:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-02-14 01:29:29,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:29:29,886 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 01:29:29,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-14 01:29:30,089 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 01:29:30,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:29:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:29:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2072776725, now seen corresponding path program 9 times [2023-02-14 01:29:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:29:30,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218054232] [2023-02-14 01:29:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:29:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:29:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:30,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:29:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:29:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:29:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:29:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:29:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-14 01:29:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:29:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:29:32,052 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 01:29:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:29:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218054232] [2023-02-14 01:29:32,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218054232] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:29:32,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669568895] [2023-02-14 01:29:32,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 01:29:32,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:29:32,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:29:32,054 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 01:29:32,056 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 01:29:32,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-02-14 01:29:32,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:29:32,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 175 conjunts are in the unsatisfiable core [2023-02-14 01:29:32,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:29:32,803 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 01:29:32,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:29:36,355 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 01:29:36,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669568895] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:29:36,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:29:36,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 58] total 83 [2023-02-14 01:29:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203110831] [2023-02-14 01:29:36,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:29:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-02-14 01:29:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:29:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-02-14 01:29:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6505, Unknown=0, NotChecked=0, Total=6806 [2023-02-14 01:29:36,359 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 01:30:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:30:02,560 INFO L93 Difference]: Finished difference Result 524 states and 792 transitions. [2023-02-14 01:30:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2023-02-14 01:30:02,560 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 01:30:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:30:02,563 INFO L225 Difference]: With dead ends: 524 [2023-02-14 01:30:02,563 INFO L226 Difference]: Without dead ends: 520 [2023-02-14 01:30:02,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 394 SyntacticMatches, 20 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16454 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=7719, Invalid=49641, Unknown=0, NotChecked=0, Total=57360 [2023-02-14 01:30:02,570 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1407 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 10017 mSolverCounterSat, 4754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 14771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4754 IncrementalHoareTripleChecker+Valid, 10017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-02-14 01:30:02,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1154 Invalid, 14771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4754 Valid, 10017 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-14 01:30:02,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-02-14 01:30:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 437. [2023-02-14 01:30:02,613 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 01:30:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 631 transitions. [2023-02-14 01:30:02,615 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 631 transitions. Word has length 184 [2023-02-14 01:30:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:30:02,615 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 631 transitions. [2023-02-14 01:30:02,616 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 01:30:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 631 transitions. [2023-02-14 01:30:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-02-14 01:30:02,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:30:02,619 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 01:30:02,627 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 01:30:02,825 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 01:30:02,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:30:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:30:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1729878095, now seen corresponding path program 10 times [2023-02-14 01:30:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:30:02,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564430825] [2023-02-14 01:30:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:30:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:30:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:02,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:30:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:30:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-02-14 01:30:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:03,287 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 01:30:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:30:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564430825] [2023-02-14 01:30:03,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564430825] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:30:03,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056395000] [2023-02-14 01:30:03,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 01:30:03,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:30:03,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:30:03,289 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 01:30:03,291 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 01:30:03,425 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 01:30:03,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:30:03,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 01:30:03,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:30:03,523 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 01:30:03,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:30:04,645 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 01:30:04,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056395000] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:30:04,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:30:04,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-02-14 01:30:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129927974] [2023-02-14 01:30:04,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:30:04,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-14 01:30:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:30:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-14 01:30:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2023-02-14 01:30:04,647 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 01:30:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:30:05,127 INFO L93 Difference]: Finished difference Result 683 states and 1088 transitions. [2023-02-14 01:30:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-14 01:30:05,128 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 01:30:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:30:05,132 INFO L225 Difference]: With dead ends: 683 [2023-02-14 01:30:05,133 INFO L226 Difference]: Without dead ends: 467 [2023-02-14 01:30:05,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 422 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=2253, Unknown=0, NotChecked=0, Total=2756 [2023-02-14 01:30:05,135 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 01:30:05,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 132 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 01:30:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-14 01:30:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 394. [2023-02-14 01:30:05,198 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 01:30:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 551 transitions. [2023-02-14 01:30:05,200 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 551 transitions. Word has length 190 [2023-02-14 01:30:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:30:05,201 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 551 transitions. [2023-02-14 01:30:05,202 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 01:30:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 551 transitions. [2023-02-14 01:30:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-02-14 01:30:05,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:30:05,205 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 01:30:05,212 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 01:30:05,410 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 01:30:05,410 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:30:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:30:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1910939669, now seen corresponding path program 11 times [2023-02-14 01:30:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:30:05,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015745798] [2023-02-14 01:30:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:30:05,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:30:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:30:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:30:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-14 01:30:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-02-14 01:30:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 640 proven. 804 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2023-02-14 01:30:06,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:30:06,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015745798] [2023-02-14 01:30:06,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015745798] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:30:06,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860967766] [2023-02-14 01:30:06,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 01:30:06,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:30:06,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:30:06,196 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 01:30:06,198 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 01:30:06,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2023-02-14 01:30:06,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:30:06,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-14 01:30:06,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:30:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 868 proven. 595 refuted. 0 times theorem prover too weak. 3397 trivial. 0 not checked. [2023-02-14 01:30:06,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:30:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 870 proven. 619 refuted. 0 times theorem prover too weak. 3371 trivial. 0 not checked. [2023-02-14 01:30:07,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860967766] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:30:07,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:30:07,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 27 [2023-02-14 01:30:07,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502163423] [2023-02-14 01:30:07,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:30:07,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-14 01:30:07,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:30:07,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-14 01:30:07,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2023-02-14 01:30:07,824 INFO L87 Difference]: Start difference. First operand 394 states and 551 transitions. Second operand has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) [2023-02-14 01:30:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:30:08,230 INFO L93 Difference]: Finished difference Result 570 states and 838 transitions. [2023-02-14 01:30:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-14 01:30:08,248 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) Word has length 264 [2023-02-14 01:30:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:30:08,251 INFO L225 Difference]: With dead ends: 570 [2023-02-14 01:30:08,251 INFO L226 Difference]: Without dead ends: 464 [2023-02-14 01:30:08,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 606 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=644, Invalid=2008, Unknown=0, NotChecked=0, Total=2652 [2023-02-14 01:30:08,252 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 69 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 01:30:08,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 150 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 01:30:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-02-14 01:30:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 391. [2023-02-14 01:30:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 119 states have call successors, (119), 60 states have call predecessors, (119), 71 states have return successors, (203), 130 states have call predecessors, (203), 119 states have call successors, (203) [2023-02-14 01:30:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 534 transitions. [2023-02-14 01:30:08,294 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 534 transitions. Word has length 264 [2023-02-14 01:30:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:30:08,294 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 534 transitions. [2023-02-14 01:30:08,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 25 states have internal predecessors, (60), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) [2023-02-14 01:30:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 534 transitions. [2023-02-14 01:30:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-02-14 01:30:08,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:30:08,298 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 01:30:08,305 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 01:30:08,505 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 01:30:08,505 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:30:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:30:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1351583765, now seen corresponding path program 12 times [2023-02-14 01:30:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:30:08,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974058762] [2023-02-14 01:30:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:30:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:30:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:08,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:30:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:30:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-14 01:30:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:30:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-02-14 01:30:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:09,365 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 01:30:09,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:30:09,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974058762] [2023-02-14 01:30:09,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974058762] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:30:09,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297910873] [2023-02-14 01:30:09,366 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 01:30:09,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:30:09,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:30:09,367 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 01:30:09,370 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 01:30:09,571 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2023-02-14 01:30:09,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 01:30:09,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 01:30:09,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:30:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 475 proven. 865 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2023-02-14 01:30:09,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:30:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 479 proven. 896 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2023-02-14 01:30:11,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297910873] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:30:11,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:30:11,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2023-02-14 01:30:11,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721605358] [2023-02-14 01:30:11,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:30:11,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-14 01:30:11,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:30:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-14 01:30:11,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2023-02-14 01:30:11,259 INFO L87 Difference]: Start difference. First operand 391 states and 534 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 01:30:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 01:30:11,811 INFO L93 Difference]: Finished difference Result 427 states and 577 transitions. [2023-02-14 01:30:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-14 01:30:11,812 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 01:30:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 01:30:11,814 INFO L225 Difference]: With dead ends: 427 [2023-02-14 01:30:11,814 INFO L226 Difference]: Without dead ends: 423 [2023-02-14 01:30:11,815 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 01:30:11,815 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 01:30:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 192 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 01:30:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-02-14 01:30:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 394. [2023-02-14 01:30:11,852 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 01:30:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 537 transitions. [2023-02-14 01:30:11,854 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 537 transitions. Word has length 344 [2023-02-14 01:30:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 01:30:11,855 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 537 transitions. [2023-02-14 01:30:11,855 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 01:30:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 537 transitions. [2023-02-14 01:30:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-02-14 01:30:11,859 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 01:30:11,859 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 01:30:11,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-14 01:30:12,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:30:12,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 01:30:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 01:30:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash -430264399, now seen corresponding path program 13 times [2023-02-14 01:30:12,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 01:30:12,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610039143] [2023-02-14 01:30:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 01:30:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 01:30:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 01:30:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:30:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-02-14 01:30:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-14 01:30:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 01:30:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 01:30:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-14 01:30:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-02-14 01:30:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 01:30:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,711 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 01:30:17,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 01:30:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610039143] [2023-02-14 01:30:17,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610039143] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 01:30:17,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419060742] [2023-02-14 01:30:17,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-14 01:30:17,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 01:30:17,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 01:30:17,713 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 01:30:17,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-14 01:30:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 01:30:17,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 339 conjunts are in the unsatisfiable core [2023-02-14 01:30:17,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 01:30:18,919 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 01:30:18,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 01:30:27,727 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 01:30:27,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419060742] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 01:30:27,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 01:30:27,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 108] total 139 [2023-02-14 01:30:27,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785240278] [2023-02-14 01:30:27,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 01:30:27,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-02-14 01:30:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 01:30:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-02-14 01:30:27,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=18689, Unknown=0, NotChecked=0, Total=19182 [2023-02-14 01:30:27,731 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)