./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.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 c9bc953af286e9cfd29d104859de67d32500c9606def6c78f8ad113aab301f45 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:59:33,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:59:33,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:59:33,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:59:33,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:59:33,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:59:33,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:59:33,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:59:33,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:59:33,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:59:33,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:59:33,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:59:33,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:59:33,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:59:33,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:59:33,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:59:33,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:59:33,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:59:33,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:59:33,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:59:33,569 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:59:33,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:59:33,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:59:33,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:59:33,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:59:33,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:59:33,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:59:33,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:59:33,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:59:33,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:59:33,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:59:33,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:59:33,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:59:33,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:59:33,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:59:33,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:59:33,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:59:33,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:59:33,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:59:33,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:59:33,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:59:33,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:59:33,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:59:33,620 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:59:33,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:59:33,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:59:33,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:59:33,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:59:33,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:59:33,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:59:33,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:59:33,623 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:59:33,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:59:33,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:59:33,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:59:33,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:59:33,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:59:33,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:59:33,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:59:33,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:59:33,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:59:33,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:59:33,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:59:33,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:59:33,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:59:33,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:59:33,627 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:59:33,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:59:33,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:59:33,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9bc953af286e9cfd29d104859de67d32500c9606def6c78f8ad113aab301f45 [2022-07-22 17:59:33,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:59:33,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:59:33,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:59:33,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:59:33,839 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:59:33,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2022-07-22 17:59:33,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e23eacfa/49c88c54848d4ffdbafff4a91b312933/FLAG241b962a8 [2022-07-22 17:59:34,246 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:59:34,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2022-07-22 17:59:34,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e23eacfa/49c88c54848d4ffdbafff4a91b312933/FLAG241b962a8 [2022-07-22 17:59:34,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e23eacfa/49c88c54848d4ffdbafff4a91b312933 [2022-07-22 17:59:34,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:59:34,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:59:34,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:59:34,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:59:34,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:59:34,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77597019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34, skipping insertion in model container [2022-07-22 17:59:34,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:59:34,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:59:34,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c[12924,12937] [2022-07-22 17:59:34,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:59:34,874 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:59:34,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c[12924,12937] [2022-07-22 17:59:34,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:59:34,938 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:59:34,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34 WrapperNode [2022-07-22 17:59:34,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:59:34,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:59:34,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:59:34,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:59:34,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,973 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 437 [2022-07-22 17:59:34,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:59:34,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:59:34,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:59:34,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:59:34,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:34,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:59:34,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:59:34,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:59:34,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:59:35,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (1/1) ... [2022-07-22 17:59:35,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:59:35,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:59:35,063 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) [2022-07-22 17:59:35,075 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 [2022-07-22 17:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:59:35,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:59:35,172 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:59:35,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:59:35,582 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:59:35,588 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:59:35,591 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:59:35,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:59:35 BoogieIcfgContainer [2022-07-22 17:59:35,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:59:35,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:59:35,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:59:35,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:59:35,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:59:34" (1/3) ... [2022-07-22 17:59:35,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15364014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:59:35, skipping insertion in model container [2022-07-22 17:59:35,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:59:34" (2/3) ... [2022-07-22 17:59:35,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15364014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:59:35, skipping insertion in model container [2022-07-22 17:59:35,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:59:35" (3/3) ... [2022-07-22 17:59:35,601 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2022-07-22 17:59:35,611 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:59:35,611 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:59:35,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:59:35,650 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c56f1b4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@460c0b1a [2022-07-22 17:59:35,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:59:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 17:59:35,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:35,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:35,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:35,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash -306716250, now seen corresponding path program 1 times [2022-07-22 17:59:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:35,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092888034] [2022-07-22 17:59:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:35,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:35,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092888034] [2022-07-22 17:59:35,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092888034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:35,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:35,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 17:59:35,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654436765] [2022-07-22 17:59:35,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:35,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:59:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:35,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:59:35,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 17:59:35,911 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:35,947 INFO L93 Difference]: Finished difference Result 202 states and 349 transitions. [2022-07-22 17:59:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:59:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-07-22 17:59:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:35,958 INFO L225 Difference]: With dead ends: 202 [2022-07-22 17:59:35,958 INFO L226 Difference]: Without dead ends: 127 [2022-07-22 17:59:35,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 17:59:35,965 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:35,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-22 17:59:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-22 17:59:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.746031746031746) internal successors, (220), 126 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 220 transitions. [2022-07-22 17:59:36,006 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 220 transitions. Word has length 37 [2022-07-22 17:59:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,007 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 220 transitions. [2022-07-22 17:59:36,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 220 transitions. [2022-07-22 17:59:36,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 17:59:36,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:59:36,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1124364700, now seen corresponding path program 1 times [2022-07-22 17:59:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102150002] [2022-07-22 17:59:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102150002] [2022-07-22 17:59:36,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102150002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408325496] [2022-07-22 17:59:36,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:36,170 INFO L87 Difference]: Start difference. First operand 127 states and 220 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,258 INFO L93 Difference]: Finished difference Result 201 states and 342 transitions. [2022-07-22 17:59:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-07-22 17:59:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,261 INFO L225 Difference]: With dead ends: 201 [2022-07-22 17:59:36,262 INFO L226 Difference]: Without dead ends: 127 [2022-07-22 17:59:36,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:59:36,264 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 3 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 842 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-22 17:59:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-22 17:59:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5317460317460319) internal successors, (193), 126 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2022-07-22 17:59:36,280 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2022-07-22 17:59:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,280 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2022-07-22 17:59:36,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2022-07-22 17:59:36,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 17:59:36,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:59:36,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1313145683, now seen corresponding path program 1 times [2022-07-22 17:59:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002373087] [2022-07-22 17:59:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002373087] [2022-07-22 17:59:36,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002373087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:59:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926901674] [2022-07-22 17:59:36,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:59:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:59:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,346 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,378 INFO L93 Difference]: Finished difference Result 258 states and 412 transitions. [2022-07-22 17:59:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:59:36,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-22 17:59:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,388 INFO L225 Difference]: With dead ends: 258 [2022-07-22 17:59:36,388 INFO L226 Difference]: Without dead ends: 188 [2022-07-22 17:59:36,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,389 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 93 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 421 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-22 17:59:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-07-22 17:59:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5567567567567568) internal successors, (288), 185 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 288 transitions. [2022-07-22 17:59:36,412 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 288 transitions. Word has length 63 [2022-07-22 17:59:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,413 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 288 transitions. [2022-07-22 17:59:36,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,413 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 288 transitions. [2022-07-22 17:59:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 17:59:36,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:59:36,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash -255493166, now seen corresponding path program 1 times [2022-07-22 17:59:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953834387] [2022-07-22 17:59:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953834387] [2022-07-22 17:59:36,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953834387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:59:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886699269] [2022-07-22 17:59:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:59:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:59:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,491 INFO L87 Difference]: Start difference. First operand 186 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,513 INFO L93 Difference]: Finished difference Result 313 states and 501 transitions. [2022-07-22 17:59:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:59:36,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-22 17:59:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,517 INFO L225 Difference]: With dead ends: 313 [2022-07-22 17:59:36,517 INFO L226 Difference]: Without dead ends: 243 [2022-07-22 17:59:36,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,519 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-22 17:59:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-07-22 17:59:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5833333333333333) internal successors, (380), 240 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 380 transitions. [2022-07-22 17:59:36,538 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 380 transitions. Word has length 65 [2022-07-22 17:59:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,539 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 380 transitions. [2022-07-22 17:59:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 380 transitions. [2022-07-22 17:59:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 17:59:36,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:59:36,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1395779292, now seen corresponding path program 1 times [2022-07-22 17:59:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48088803] [2022-07-22 17:59:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48088803] [2022-07-22 17:59:36,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48088803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:59:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168831906] [2022-07-22 17:59:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:59:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:59:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,609 INFO L87 Difference]: Start difference. First operand 241 states and 380 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,653 INFO L93 Difference]: Finished difference Result 584 states and 947 transitions. [2022-07-22 17:59:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:59:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-22 17:59:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,658 INFO L225 Difference]: With dead ends: 584 [2022-07-22 17:59:36,658 INFO L226 Difference]: Without dead ends: 402 [2022-07-22 17:59:36,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,659 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 95 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 428 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-22 17:59:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2022-07-22 17:59:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.6040100250626566) internal successors, (640), 399 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 640 transitions. [2022-07-22 17:59:36,675 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 640 transitions. Word has length 65 [2022-07-22 17:59:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,675 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 640 transitions. [2022-07-22 17:59:36,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,676 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 640 transitions. [2022-07-22 17:59:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:59:36,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:59:36,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash -812427391, now seen corresponding path program 1 times [2022-07-22 17:59:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108141196] [2022-07-22 17:59:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108141196] [2022-07-22 17:59:36,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108141196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:59:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974837237] [2022-07-22 17:59:36,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:59:36,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:59:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,726 INFO L87 Difference]: Start difference. First operand 400 states and 640 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,752 INFO L93 Difference]: Finished difference Result 729 states and 1183 transitions. [2022-07-22 17:59:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:59:36,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 17:59:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,754 INFO L225 Difference]: With dead ends: 729 [2022-07-22 17:59:36,754 INFO L226 Difference]: Without dead ends: 547 [2022-07-22 17:59:36,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,757 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 96 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 427 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-07-22 17:59:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2022-07-22 17:59:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.6084558823529411) internal successors, (875), 544 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 875 transitions. [2022-07-22 17:59:36,787 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 875 transitions. Word has length 67 [2022-07-22 17:59:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,789 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 875 transitions. [2022-07-22 17:59:36,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 875 transitions. [2022-07-22 17:59:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 17:59:36,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:59:36,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash 221435787, now seen corresponding path program 1 times [2022-07-22 17:59:36,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102867130] [2022-07-22 17:59:36,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102867130] [2022-07-22 17:59:36,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102867130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:59:36,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347873768] [2022-07-22 17:59:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:59:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:59:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,819 INFO L87 Difference]: Start difference. First operand 545 states and 875 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,862 INFO L93 Difference]: Finished difference Result 1434 states and 2326 transitions. [2022-07-22 17:59:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:59:36,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 17:59:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,865 INFO L225 Difference]: With dead ends: 1434 [2022-07-22 17:59:36,866 INFO L226 Difference]: Without dead ends: 958 [2022-07-22 17:59:36,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,867 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 89 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-07-22 17:59:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2022-07-22 17:59:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 1.6041884816753926) internal successors, (1532), 955 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1532 transitions. [2022-07-22 17:59:36,894 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1532 transitions. Word has length 67 [2022-07-22 17:59:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:36,895 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1532 transitions. [2022-07-22 17:59:36,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1532 transitions. [2022-07-22 17:59:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 17:59:36,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:36,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:36,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:59:36,898 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash 664156592, now seen corresponding path program 1 times [2022-07-22 17:59:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473715511] [2022-07-22 17:59:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:36,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:36,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473715511] [2022-07-22 17:59:36,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473715511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:36,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:36,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:59:36,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503239180] [2022-07-22 17:59:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:36,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:59:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:59:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,936 INFO L87 Difference]: Start difference. First operand 956 states and 1532 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:36,972 INFO L93 Difference]: Finished difference Result 1783 states and 2881 transitions. [2022-07-22 17:59:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:59:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-22 17:59:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:36,976 INFO L225 Difference]: With dead ends: 1783 [2022-07-22 17:59:36,976 INFO L226 Difference]: Without dead ends: 1307 [2022-07-22 17:59:36,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:59:36,977 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 90 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:36,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-07-22 17:59:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1305. [2022-07-22 17:59:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1304 states have (on average 1.5996932515337423) internal successors, (2086), 1304 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 2086 transitions. [2022-07-22 17:59:37,029 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 2086 transitions. Word has length 69 [2022-07-22 17:59:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:37,029 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 2086 transitions. [2022-07-22 17:59:37,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 2086 transitions. [2022-07-22 17:59:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 17:59:37,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:37,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:37,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:59:37,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1757720902, now seen corresponding path program 1 times [2022-07-22 17:59:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:37,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178248907] [2022-07-22 17:59:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:37,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:37,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178248907] [2022-07-22 17:59:37,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178248907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:37,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:37,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504980199] [2022-07-22 17:59:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:37,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:37,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:37,087 INFO L87 Difference]: Start difference. First operand 1305 states and 2086 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:37,326 INFO L93 Difference]: Finished difference Result 6582 states and 10723 transitions. [2022-07-22 17:59:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:59:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-22 17:59:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:37,341 INFO L225 Difference]: With dead ends: 6582 [2022-07-22 17:59:37,341 INFO L226 Difference]: Without dead ends: 5356 [2022-07-22 17:59:37,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:59:37,343 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 774 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:37,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1196 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:59:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2022-07-22 17:59:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 2452. [2022-07-22 17:59:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2451 states have (on average 1.5968992248062015) internal successors, (3914), 2451 states have internal predecessors, (3914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3914 transitions. [2022-07-22 17:59:37,461 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3914 transitions. Word has length 69 [2022-07-22 17:59:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:37,462 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3914 transitions. [2022-07-22 17:59:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3914 transitions. [2022-07-22 17:59:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 17:59:37,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:37,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:37,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:59:37,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:37,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:37,463 INFO L85 PathProgramCache]: Analyzing trace with hash -577605759, now seen corresponding path program 1 times [2022-07-22 17:59:37,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:37,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824385782] [2022-07-22 17:59:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:37,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:37,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824385782] [2022-07-22 17:59:37,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824385782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:37,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:37,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:59:37,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293910566] [2022-07-22 17:59:37,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:59:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:59:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:59:37,490 INFO L87 Difference]: Start difference. First operand 2452 states and 3914 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:37,683 INFO L93 Difference]: Finished difference Result 7943 states and 12835 transitions. [2022-07-22 17:59:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:59:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-22 17:59:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:37,698 INFO L225 Difference]: With dead ends: 7943 [2022-07-22 17:59:37,698 INFO L226 Difference]: Without dead ends: 5570 [2022-07-22 17:59:37,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:37,700 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 338 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:37,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 626 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:37,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2022-07-22 17:59:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 3992. [2022-07-22 17:59:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3991 states have (on average 1.5995990979704335) internal successors, (6384), 3991 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6384 transitions. [2022-07-22 17:59:37,829 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6384 transitions. Word has length 70 [2022-07-22 17:59:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:37,829 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 6384 transitions. [2022-07-22 17:59:37,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6384 transitions. [2022-07-22 17:59:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-22 17:59:37,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:37,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:37,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:59:37,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:37,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1815229649, now seen corresponding path program 1 times [2022-07-22 17:59:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:37,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074886852] [2022-07-22 17:59:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:37,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074886852] [2022-07-22 17:59:37,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074886852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:37,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:37,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:59:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943872373] [2022-07-22 17:59:37,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:37,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:59:37,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:37,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:59:37,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:59:37,859 INFO L87 Difference]: Start difference. First operand 3992 states and 6384 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:38,135 INFO L93 Difference]: Finished difference Result 12755 states and 20495 transitions. [2022-07-22 17:59:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:59:38,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-22 17:59:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:38,159 INFO L225 Difference]: With dead ends: 12755 [2022-07-22 17:59:38,160 INFO L226 Difference]: Without dead ends: 8842 [2022-07-22 17:59:38,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:38,165 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 336 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:38,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 623 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2022-07-22 17:59:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 6388. [2022-07-22 17:59:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6387 states have (on average 1.5913574448097698) internal successors, (10164), 6387 states have internal predecessors, (10164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 10164 transitions. [2022-07-22 17:59:38,415 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 10164 transitions. Word has length 71 [2022-07-22 17:59:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:38,415 INFO L495 AbstractCegarLoop]: Abstraction has 6388 states and 10164 transitions. [2022-07-22 17:59:38,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 10164 transitions. [2022-07-22 17:59:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 17:59:38,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:38,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:59:38,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1147279688, now seen corresponding path program 1 times [2022-07-22 17:59:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:38,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288484273] [2022-07-22 17:59:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:38,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:38,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288484273] [2022-07-22 17:59:38,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288484273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:38,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:38,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:59:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218292389] [2022-07-22 17:59:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:38,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:59:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:59:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:59:38,460 INFO L87 Difference]: Start difference. First operand 6388 states and 10164 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:38,875 INFO L93 Difference]: Finished difference Result 20047 states and 32019 transitions. [2022-07-22 17:59:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:59:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-22 17:59:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:38,898 INFO L225 Difference]: With dead ends: 20047 [2022-07-22 17:59:38,898 INFO L226 Difference]: Without dead ends: 13738 [2022-07-22 17:59:38,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:38,906 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 334 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:38,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 625 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13738 states. [2022-07-22 17:59:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13738 to 10020. [2022-07-22 17:59:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10020 states, 10019 states have (on average 1.582593073160994) internal successors, (15856), 10019 states have internal predecessors, (15856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15856 transitions. [2022-07-22 17:59:39,278 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15856 transitions. Word has length 72 [2022-07-22 17:59:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:39,278 INFO L495 AbstractCegarLoop]: Abstraction has 10020 states and 15856 transitions. [2022-07-22 17:59:39,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15856 transitions. [2022-07-22 17:59:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 17:59:39,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:39,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:39,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:59:39,280 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:39,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash -856706640, now seen corresponding path program 1 times [2022-07-22 17:59:39,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:39,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506117399] [2022-07-22 17:59:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:39,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:39,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:39,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506117399] [2022-07-22 17:59:39,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506117399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:39,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:39,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238292518] [2022-07-22 17:59:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:39,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:39,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:39,364 INFO L87 Difference]: Start difference. First operand 10020 states and 15856 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:39,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:39,741 INFO L93 Difference]: Finished difference Result 19963 states and 31608 transitions. [2022-07-22 17:59:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:39,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-22 17:59:39,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:39,756 INFO L225 Difference]: With dead ends: 19963 [2022-07-22 17:59:39,756 INFO L226 Difference]: Without dead ends: 10022 [2022-07-22 17:59:39,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:59:39,765 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 159 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:39,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 677 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2022-07-22 17:59:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 10020. [2022-07-22 17:59:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10020 states, 10019 states have (on average 1.570116778121569) internal successors, (15731), 10019 states have internal predecessors, (15731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15731 transitions. [2022-07-22 17:59:40,176 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15731 transitions. Word has length 74 [2022-07-22 17:59:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:40,176 INFO L495 AbstractCegarLoop]: Abstraction has 10020 states and 15731 transitions. [2022-07-22 17:59:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15731 transitions. [2022-07-22 17:59:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 17:59:40,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:40,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:40,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:59:40,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:40,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash 251102324, now seen corresponding path program 1 times [2022-07-22 17:59:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:40,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620489016] [2022-07-22 17:59:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:40,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:40,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620489016] [2022-07-22 17:59:40,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620489016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:40,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:40,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483633318] [2022-07-22 17:59:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:40,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:40,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:40,235 INFO L87 Difference]: Start difference. First operand 10020 states and 15731 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:40,725 INFO L93 Difference]: Finished difference Result 28689 states and 45194 transitions. [2022-07-22 17:59:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:40,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-22 17:59:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:40,755 INFO L225 Difference]: With dead ends: 28689 [2022-07-22 17:59:40,756 INFO L226 Difference]: Without dead ends: 18748 [2022-07-22 17:59:40,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:59:40,766 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 243 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:40,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 519 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18748 states. [2022-07-22 17:59:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18748 to 18746. [2022-07-22 17:59:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18746 states, 18745 states have (on average 1.5565750866897838) internal successors, (29178), 18745 states have internal predecessors, (29178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18746 states to 18746 states and 29178 transitions. [2022-07-22 17:59:41,386 INFO L78 Accepts]: Start accepts. Automaton has 18746 states and 29178 transitions. Word has length 77 [2022-07-22 17:59:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:41,386 INFO L495 AbstractCegarLoop]: Abstraction has 18746 states and 29178 transitions. [2022-07-22 17:59:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 18746 states and 29178 transitions. [2022-07-22 17:59:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 17:59:41,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:41,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:59:41,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1234338215, now seen corresponding path program 1 times [2022-07-22 17:59:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:41,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524416921] [2022-07-22 17:59:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:41,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:59:41,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:41,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524416921] [2022-07-22 17:59:41,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524416921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:41,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:41,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:59:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357703845] [2022-07-22 17:59:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:41,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:59:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:59:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:59:41,473 INFO L87 Difference]: Start difference. First operand 18746 states and 29178 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:42,892 INFO L93 Difference]: Finished difference Result 36838 states and 56661 transitions. [2022-07-22 17:59:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:59:42,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-22 17:59:42,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:42,946 INFO L225 Difference]: With dead ends: 36838 [2022-07-22 17:59:42,947 INFO L226 Difference]: Without dead ends: 36836 [2022-07-22 17:59:42,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:59:42,954 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 845 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:42,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1025 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:42,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36836 states. [2022-07-22 17:59:43,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36836 to 19832. [2022-07-22 17:59:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19832 states, 19831 states have (on average 1.5256416721294943) internal successors, (30255), 19831 states have internal predecessors, (30255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19832 states to 19832 states and 30255 transitions. [2022-07-22 17:59:43,765 INFO L78 Accepts]: Start accepts. Automaton has 19832 states and 30255 transitions. Word has length 78 [2022-07-22 17:59:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:43,766 INFO L495 AbstractCegarLoop]: Abstraction has 19832 states and 30255 transitions. [2022-07-22 17:59:43,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:43,766 INFO L276 IsEmpty]: Start isEmpty. Operand 19832 states and 30255 transitions. [2022-07-22 17:59:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 17:59:43,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:43,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:59:43,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:43,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1630330772, now seen corresponding path program 1 times [2022-07-22 17:59:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:43,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610784353] [2022-07-22 17:59:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 17:59:43,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610784353] [2022-07-22 17:59:43,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610784353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:43,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:43,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097774758] [2022-07-22 17:59:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:43,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:43,822 INFO L87 Difference]: Start difference. First operand 19832 states and 30255 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:45,168 INFO L93 Difference]: Finished difference Result 48790 states and 74781 transitions. [2022-07-22 17:59:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:45,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-07-22 17:59:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:45,227 INFO L225 Difference]: With dead ends: 48790 [2022-07-22 17:59:45,227 INFO L226 Difference]: Without dead ends: 39128 [2022-07-22 17:59:45,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:59:45,243 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 415 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:45,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 832 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:59:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39128 states. [2022-07-22 17:59:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39128 to 30524. [2022-07-22 17:59:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30524 states, 30523 states have (on average 1.523539625855912) internal successors, (46503), 30523 states have internal predecessors, (46503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30524 states to 30524 states and 46503 transitions. [2022-07-22 17:59:46,677 INFO L78 Accepts]: Start accepts. Automaton has 30524 states and 46503 transitions. Word has length 103 [2022-07-22 17:59:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:46,677 INFO L495 AbstractCegarLoop]: Abstraction has 30524 states and 46503 transitions. [2022-07-22 17:59:46,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 30524 states and 46503 transitions. [2022-07-22 17:59:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 17:59:46,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:46,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:46,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:59:46,680 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash -743960700, now seen corresponding path program 1 times [2022-07-22 17:59:46,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:46,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531604597] [2022-07-22 17:59:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 17:59:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:46,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531604597] [2022-07-22 17:59:46,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531604597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:46,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:46,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:46,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670771842] [2022-07-22 17:59:46,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:46,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:46,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:46,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:46,726 INFO L87 Difference]: Start difference. First operand 30524 states and 46503 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:48,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:48,398 INFO L93 Difference]: Finished difference Result 54722 states and 83891 transitions. [2022-07-22 17:59:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:48,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-07-22 17:59:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:48,458 INFO L225 Difference]: With dead ends: 54722 [2022-07-22 17:59:48,458 INFO L226 Difference]: Without dead ends: 45320 [2022-07-22 17:59:48,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:59:48,479 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 418 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:48,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 881 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45320 states. [2022-07-22 17:59:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45320 to 41442. [2022-07-22 17:59:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41442 states, 41441 states have (on average 1.525662990757945) internal successors, (63225), 41441 states have internal predecessors, (63225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41442 states to 41442 states and 63225 transitions. [2022-07-22 17:59:50,429 INFO L78 Accepts]: Start accepts. Automaton has 41442 states and 63225 transitions. Word has length 103 [2022-07-22 17:59:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:50,429 INFO L495 AbstractCegarLoop]: Abstraction has 41442 states and 63225 transitions. [2022-07-22 17:59:50,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 41442 states and 63225 transitions. [2022-07-22 17:59:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 17:59:50,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:50,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:50,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:59:50,432 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash 910392184, now seen corresponding path program 1 times [2022-07-22 17:59:50,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:50,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320300095] [2022-07-22 17:59:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:50,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 17:59:50,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:50,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320300095] [2022-07-22 17:59:50,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320300095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:50,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:50,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:59:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769791416] [2022-07-22 17:59:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:50,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:59:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:59:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:59:50,481 INFO L87 Difference]: Start difference. First operand 41442 states and 63225 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:52,303 INFO L93 Difference]: Finished difference Result 58490 states and 89675 transitions. [2022-07-22 17:59:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:59:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-07-22 17:59:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:52,370 INFO L225 Difference]: With dead ends: 58490 [2022-07-22 17:59:52,370 INFO L226 Difference]: Without dead ends: 49088 [2022-07-22 17:59:52,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:59:52,393 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 419 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:52,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 906 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49088 states. [2022-07-22 17:59:54,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49088 to 47530. [2022-07-22 17:59:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47530 states, 47529 states have (on average 1.527846157083044) internal successors, (72617), 47529 states have internal predecessors, (72617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47530 states to 47530 states and 72617 transitions. [2022-07-22 17:59:54,742 INFO L78 Accepts]: Start accepts. Automaton has 47530 states and 72617 transitions. Word has length 103 [2022-07-22 17:59:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:59:54,742 INFO L495 AbstractCegarLoop]: Abstraction has 47530 states and 72617 transitions. [2022-07-22 17:59:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 47530 states and 72617 transitions. [2022-07-22 17:59:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 17:59:54,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:59:54,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:59:54,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:59:54,745 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:59:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:59:54,745 INFO L85 PathProgramCache]: Analyzing trace with hash -923479025, now seen corresponding path program 1 times [2022-07-22 17:59:54,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:59:54,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055203634] [2022-07-22 17:59:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:59:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:59:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:59:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 17:59:54,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:59:54,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055203634] [2022-07-22 17:59:54,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055203634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:59:54,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:59:54,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:59:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793970114] [2022-07-22 17:59:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:59:54,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:59:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:59:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:59:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:59:54,789 INFO L87 Difference]: Start difference. First operand 47530 states and 72617 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 17:59:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:59:57,355 INFO L93 Difference]: Finished difference Result 77643 states and 119316 transitions. [2022-07-22 17:59:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 17:59:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 17:59:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:59:57,436 INFO L225 Difference]: With dead ends: 77643 [2022-07-22 17:59:57,437 INFO L226 Difference]: Without dead ends: 61789 [2022-07-22 17:59:57,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:59:57,462 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 187 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:59:57,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 575 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:59:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61789 states. [2022-07-22 18:00:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61789 to 60233. [2022-07-22 18:00:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60233 states, 60232 states have (on average 1.528240802231372) internal successors, (92049), 60232 states have internal predecessors, (92049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60233 states to 60233 states and 92049 transitions. [2022-07-22 18:00:00,231 INFO L78 Accepts]: Start accepts. Automaton has 60233 states and 92049 transitions. Word has length 104 [2022-07-22 18:00:00,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:00,231 INFO L495 AbstractCegarLoop]: Abstraction has 60233 states and 92049 transitions. [2022-07-22 18:00:00,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 60233 states and 92049 transitions. [2022-07-22 18:00:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:00:00,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:00,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:00,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:00:00,234 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:00,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1887965934, now seen corresponding path program 1 times [2022-07-22 18:00:00,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:00,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214961333] [2022-07-22 18:00:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:00,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 18:00:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:00,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214961333] [2022-07-22 18:00:00,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214961333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:00,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:00,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:00:00,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263528277] [2022-07-22 18:00:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:00:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:00:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:00:00,308 INFO L87 Difference]: Start difference. First operand 60233 states and 92049 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:06,484 INFO L93 Difference]: Finished difference Result 178747 states and 272947 transitions. [2022-07-22 18:00:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:00:06,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-07-22 18:00:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:06,899 INFO L225 Difference]: With dead ends: 178747 [2022-07-22 18:00:06,899 INFO L226 Difference]: Without dead ends: 118523 [2022-07-22 18:00:06,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:00:06,961 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 393 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:06,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 463 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118523 states. [2022-07-22 18:00:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118523 to 118521. [2022-07-22 18:00:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118521 states, 118520 states have (on average 1.5159635504556193) internal successors, (179672), 118520 states have internal predecessors, (179672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118521 states to 118521 states and 179672 transitions. [2022-07-22 18:00:15,253 INFO L78 Accepts]: Start accepts. Automaton has 118521 states and 179672 transitions. Word has length 104 [2022-07-22 18:00:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:15,255 INFO L495 AbstractCegarLoop]: Abstraction has 118521 states and 179672 transitions. [2022-07-22 18:00:15,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 118521 states and 179672 transitions. [2022-07-22 18:00:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 18:00:15,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:15,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:15,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:00:15,259 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1425791198, now seen corresponding path program 1 times [2022-07-22 18:00:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:15,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017246377] [2022-07-22 18:00:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 18:00:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:15,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017246377] [2022-07-22 18:00:15,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017246377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:15,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:15,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:15,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748497844] [2022-07-22 18:00:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:15,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:15,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:15,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:15,281 INFO L87 Difference]: Start difference. First operand 118521 states and 179672 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)