./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_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_lcr.6_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 2e89791a2e8bde62b11f5e3f45edc8f6b1d8831a0e105552a6da22a3ff44c454 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:04:54,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:04:54,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:04:54,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:04:54,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:04:54,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:04:54,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:04:54,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:04:54,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:04:54,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:04:54,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:04:54,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:04:54,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:04:54,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:04:54,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:04:54,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:04:54,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:04:54,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:04:54,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:04:54,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:04:54,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:04:54,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:04:54,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:04:54,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:04:54,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:04:54,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:04:54,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:04:54,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:04:54,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:04:54,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:04:54,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:04:54,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:04:54,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:04:54,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:04:54,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:04:54,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:04:54,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:04:54,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:04:54,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:04:54,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:04:54,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:04:54,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:04:54,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:04:54,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:04:54,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:04:54,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:04:54,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:04:54,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:04:54,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:04:54,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:04:54,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:04:54,601 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:04:54,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:04:54,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:04:54,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:04:54,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:04:54,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:04:54,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:04:54,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:04:54,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:04:54,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:04:54,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:04:54,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:04:54,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:04:54,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:04:54,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:04:54,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:04:54,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:04:54,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:04:54,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:04:54,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:04:54,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:04:54,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:04:54,607 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:04:54,607 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:04:54,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:04:54,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e89791a2e8bde62b11f5e3f45edc8f6b1d8831a0e105552a6da22a3ff44c454 [2022-07-22 18:04:54,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:04:54,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:04:54,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:04:54,879 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:04:54,880 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:04:54,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2022-07-22 18:04:54,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1b9360d/33fd0ec0131543bd8284725d25b15cab/FLAGe477df48a [2022-07-22 18:04:55,373 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:04:55,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2022-07-22 18:04:55,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1b9360d/33fd0ec0131543bd8284725d25b15cab/FLAGe477df48a [2022-07-22 18:04:55,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1b9360d/33fd0ec0131543bd8284725d25b15cab [2022-07-22 18:04:55,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:04:55,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:04:55,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:04:55,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:04:55,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:04:55,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217ae979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55, skipping insertion in model container [2022-07-22 18:04:55,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:04:55,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:04:55,684 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_lcr.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2022-07-22 18:04:55,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:04:55,697 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:04:55,742 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_lcr.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2022-07-22 18:04:55,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:04:55,756 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:04:55,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55 WrapperNode [2022-07-22 18:04:55,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:04:55,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:04:55,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:04:55,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:04:55,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,803 INFO L137 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 388 [2022-07-22 18:04:55,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:04:55,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:04:55,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:04:55,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:04:55,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:04:55,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:04:55,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:04:55,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:04:55,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (1/1) ... [2022-07-22 18:04:55,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:04:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:04:55,905 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 18:04:55,936 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 18:04:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:04:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:04:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:04:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:04:56,078 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:04:56,079 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:04:56,430 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:04:56,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:04:56,438 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:04:56,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:04:56 BoogieIcfgContainer [2022-07-22 18:04:56,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:04:56,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:04:56,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:04:56,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:04:56,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:04:55" (1/3) ... [2022-07-22 18:04:56,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4882a0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:04:56, skipping insertion in model container [2022-07-22 18:04:56,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:04:55" (2/3) ... [2022-07-22 18:04:56,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4882a0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:04:56, skipping insertion in model container [2022-07-22 18:04:56,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:04:56" (3/3) ... [2022-07-22 18:04:56,447 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2022-07-22 18:04:56,460 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:04:56,460 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:04:56,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:04:56,511 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@35f514fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4eef6710 [2022-07-22 18:04:56,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:04:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 109 states have internal predecessors, (188), 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 18:04:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 18:04:56,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:56,523 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 18:04:56,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:56,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1259035486, now seen corresponding path program 1 times [2022-07-22 18:04:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067590797] [2022-07-22 18:04:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:56,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:56,682 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 18:04:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:56,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067590797] [2022-07-22 18:04:56,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067590797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:56,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:56,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:04:56,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166034429] [2022-07-22 18:04:56,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:56,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:04:56,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:04:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:04:56,716 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 109 states have internal predecessors, (188), 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 18:04:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:56,750 INFO L93 Difference]: Finished difference Result 171 states and 287 transitions. [2022-07-22 18:04:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:04:56,753 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 18:04:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:56,764 INFO L225 Difference]: With dead ends: 171 [2022-07-22 18:04:56,764 INFO L226 Difference]: Without dead ends: 106 [2022-07-22 18:04:56,768 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 18:04:56,773 INFO L413 NwaCegarLoop]: 181 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, 181 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 18:04:56,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:04:56,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-22 18:04:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-07-22 18:04:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.723809523809524) internal successors, (181), 105 states have internal predecessors, (181), 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 18:04:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 181 transitions. [2022-07-22 18:04:56,808 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 181 transitions. Word has length 37 [2022-07-22 18:04:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:56,808 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 181 transitions. [2022-07-22 18:04:56,808 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 18:04:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 181 transitions. [2022-07-22 18:04:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-22 18:04:56,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:56,810 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 18:04:56,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:04:56,810 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1533795100, now seen corresponding path program 1 times [2022-07-22 18:04:56,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:56,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875891569] [2022-07-22 18:04:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:56,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:56,938 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 18:04:56,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875891569] [2022-07-22 18:04:56,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875891569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:56,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:56,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:04:56,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266624730] [2022-07-22 18:04:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:04:56,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:04:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:04:56,944 INFO L87 Difference]: Start difference. First operand 106 states and 181 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 18:04:57,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:57,065 INFO L93 Difference]: Finished difference Result 170 states and 280 transitions. [2022-07-22 18:04:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:04:57,066 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 18:04:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:57,067 INFO L225 Difference]: With dead ends: 170 [2022-07-22 18:04:57,068 INFO L226 Difference]: Without dead ends: 106 [2022-07-22 18:04:57,069 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 18:04:57,070 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 3 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:04:57,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 673 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:04:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-22 18:04:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-07-22 18:04:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.3428571428571427) internal successors, (141), 105 states have internal predecessors, (141), 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 18:04:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-07-22 18:04:57,081 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 141 transitions. Word has length 37 [2022-07-22 18:04:57,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:57,081 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-07-22 18:04:57,082 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 18:04:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 141 transitions. [2022-07-22 18:04:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:04:57,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:57,087 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] [2022-07-22 18:04:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:04:57,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:57,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1950823117, now seen corresponding path program 1 times [2022-07-22 18:04:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:57,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591844591] [2022-07-22 18:04:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:57,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:57,266 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 18:04:57,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:57,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591844591] [2022-07-22 18:04:57,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591844591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:57,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:57,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:04:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287304480] [2022-07-22 18:04:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:04:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:04:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:04:57,269 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:57,289 INFO L93 Difference]: Finished difference Result 220 states and 321 transitions. [2022-07-22 18:04:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:04:57,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-07-22 18:04:57,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:57,297 INFO L225 Difference]: With dead ends: 220 [2022-07-22 18:04:57,297 INFO L226 Difference]: Without dead ends: 160 [2022-07-22 18:04:57,297 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 18:04:57,298 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 315 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 18:04:57,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 315 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:04:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-22 18:04:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-07-22 18:04:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4267515923566878) internal successors, (224), 157 states have internal predecessors, (224), 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 18:04:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 224 transitions. [2022-07-22 18:04:57,321 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 224 transitions. Word has length 76 [2022-07-22 18:04:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:57,322 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 224 transitions. [2022-07-22 18:04:57,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 224 transitions. [2022-07-22 18:04:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:04:57,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:57,333 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] [2022-07-22 18:04:57,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:04:57,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash 699917825, now seen corresponding path program 1 times [2022-07-22 18:04:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:57,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569350735] [2022-07-22 18:04:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:57,453 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 18:04:57,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:57,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569350735] [2022-07-22 18:04:57,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569350735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:57,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:57,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:04:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746841850] [2022-07-22 18:04:57,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:04:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:04:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:04:57,457 INFO L87 Difference]: Start difference. First operand 158 states and 224 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:57,490 INFO L93 Difference]: Finished difference Result 370 states and 560 transitions. [2022-07-22 18:04:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:04:57,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-07-22 18:04:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:57,496 INFO L225 Difference]: With dead ends: 370 [2022-07-22 18:04:57,496 INFO L226 Difference]: Without dead ends: 258 [2022-07-22 18:04:57,498 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 18:04:57,499 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 81 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 314 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 18:04:57,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:04:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-22 18:04:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2022-07-22 18:04:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4862745098039216) internal successors, (379), 255 states have internal predecessors, (379), 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 18:04:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 379 transitions. [2022-07-22 18:04:57,519 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 379 transitions. Word has length 76 [2022-07-22 18:04:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:57,520 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 379 transitions. [2022-07-22 18:04:57,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 379 transitions. [2022-07-22 18:04:57,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:04:57,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:57,521 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] [2022-07-22 18:04:57,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:04:57,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash -45664905, now seen corresponding path program 1 times [2022-07-22 18:04:57,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:57,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362225322] [2022-07-22 18:04:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:57,572 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 18:04:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:57,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362225322] [2022-07-22 18:04:57,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362225322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:57,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:57,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:04:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664019770] [2022-07-22 18:04:57,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:04:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:04:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:04:57,574 INFO L87 Difference]: Start difference. First operand 256 states and 379 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:57,596 INFO L93 Difference]: Finished difference Result 652 states and 1005 transitions. [2022-07-22 18:04:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:04:57,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-07-22 18:04:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:57,599 INFO L225 Difference]: With dead ends: 652 [2022-07-22 18:04:57,599 INFO L226 Difference]: Without dead ends: 442 [2022-07-22 18:04:57,600 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 18:04:57,601 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 77 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 313 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 18:04:57,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 313 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:04:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-07-22 18:04:57,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 440. [2022-07-22 18:04:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.5193621867881548) internal successors, (667), 439 states have internal predecessors, (667), 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 18:04:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 667 transitions. [2022-07-22 18:04:57,634 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 667 transitions. Word has length 76 [2022-07-22 18:04:57,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:57,635 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 667 transitions. [2022-07-22 18:04:57,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 667 transitions. [2022-07-22 18:04:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:04:57,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:57,636 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] [2022-07-22 18:04:57,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:04:57,637 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1985695763, now seen corresponding path program 1 times [2022-07-22 18:04:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:57,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795260888] [2022-07-22 18:04:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:57,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:57,698 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 18:04:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:57,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795260888] [2022-07-22 18:04:57,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795260888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:57,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:57,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:04:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067390001] [2022-07-22 18:04:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:04:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:04:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:04:57,701 INFO L87 Difference]: Start difference. First operand 440 states and 667 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:57,748 INFO L93 Difference]: Finished difference Result 1180 states and 1829 transitions. [2022-07-22 18:04:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:04:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-07-22 18:04:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:57,755 INFO L225 Difference]: With dead ends: 1180 [2022-07-22 18:04:57,755 INFO L226 Difference]: Without dead ends: 786 [2022-07-22 18:04:57,756 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 18:04:57,762 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 312 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 18:04:57,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 312 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:04:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-07-22 18:04:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2022-07-22 18:04:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.5312899106002553) internal successors, (1199), 783 states have internal predecessors, (1199), 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 18:04:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1199 transitions. [2022-07-22 18:04:57,815 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1199 transitions. Word has length 76 [2022-07-22 18:04:57,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:57,816 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1199 transitions. [2022-07-22 18:04:57,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:04:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1199 transitions. [2022-07-22 18:04:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:04:57,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:57,818 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] [2022-07-22 18:04:57,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:04:57,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash 714986851, now seen corresponding path program 1 times [2022-07-22 18:04:57,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:57,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231770131] [2022-07-22 18:04:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:57,961 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 18:04:57,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:57,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231770131] [2022-07-22 18:04:57,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231770131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:57,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:57,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:04:57,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953904035] [2022-07-22 18:04:57,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:57,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:04:57,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:57,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:04:57,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:04:57,964 INFO L87 Difference]: Start difference. First operand 784 states and 1199 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 18:04:58,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:58,570 INFO L93 Difference]: Finished difference Result 9640 states and 15035 transitions. [2022-07-22 18:04:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:04:58,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 76 [2022-07-22 18:04:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:58,604 INFO L225 Difference]: With dead ends: 9640 [2022-07-22 18:04:58,604 INFO L226 Difference]: Without dead ends: 8902 [2022-07-22 18:04:58,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:04:58,608 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 2232 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:04:58,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 1240 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:04:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2022-07-22 18:04:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 1520. [2022-07-22 18:04:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 1.5266622778143515) internal successors, (2319), 1519 states have internal predecessors, (2319), 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 18:04:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2319 transitions. [2022-07-22 18:04:58,795 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2319 transitions. Word has length 76 [2022-07-22 18:04:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:58,796 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 2319 transitions. [2022-07-22 18:04:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 18:04:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2319 transitions. [2022-07-22 18:04:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:04:58,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:58,797 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 18:04:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:04:58,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1508096525, now seen corresponding path program 1 times [2022-07-22 18:04:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:58,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569245098] [2022-07-22 18:04:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:58,872 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 18:04:58,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:58,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569245098] [2022-07-22 18:04:58,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569245098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:58,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:58,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:04:58,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57548746] [2022-07-22 18:04:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:58,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:04:58,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:04:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:04:58,876 INFO L87 Difference]: Start difference. First operand 1520 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:04:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:59,055 INFO L93 Difference]: Finished difference Result 3694 states and 5667 transitions. [2022-07-22 18:04:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:04:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:04:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:59,063 INFO L225 Difference]: With dead ends: 3694 [2022-07-22 18:04:59,064 INFO L226 Difference]: Without dead ends: 2220 [2022-07-22 18:04:59,066 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 18:04:59,066 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 57 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:04:59,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 252 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:04:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2022-07-22 18:04:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2218. [2022-07-22 18:04:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.5196211096075778) internal successors, (3369), 2217 states have internal predecessors, (3369), 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 18:04:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3369 transitions. [2022-07-22 18:04:59,220 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3369 transitions. Word has length 78 [2022-07-22 18:04:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:59,221 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3369 transitions. [2022-07-22 18:04:59,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:04:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3369 transitions. [2022-07-22 18:04:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:04:59,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:04:59,222 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 18:04:59,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:04:59,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:04:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:04:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1441603013, now seen corresponding path program 1 times [2022-07-22 18:04:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:04:59,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244181161] [2022-07-22 18:04:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:04:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:04:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:04:59,426 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 18:04:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:04:59,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244181161] [2022-07-22 18:04:59,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244181161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:04:59,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:04:59,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:04:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521052090] [2022-07-22 18:04:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:04:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:04:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:04:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:04:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:04:59,429 INFO L87 Difference]: Start difference. First operand 2218 states and 3369 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 18:04:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:04:59,800 INFO L93 Difference]: Finished difference Result 4390 states and 6691 transitions. [2022-07-22 18:04:59,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:04:59,800 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 18:04:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:04:59,809 INFO L225 Difference]: With dead ends: 4390 [2022-07-22 18:04:59,809 INFO L226 Difference]: Without dead ends: 2220 [2022-07-22 18:04:59,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:04:59,814 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 521 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:04:59,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 632 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:04:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2022-07-22 18:04:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2218. [2022-07-22 18:04:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.5087956698240865) internal successors, (3345), 2217 states have internal predecessors, (3345), 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 18:04:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3345 transitions. [2022-07-22 18:04:59,998 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3345 transitions. Word has length 78 [2022-07-22 18:04:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:04:59,999 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3345 transitions. [2022-07-22 18:04:59,999 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 18:04:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3345 transitions. [2022-07-22 18:05:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:05:00,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:00,001 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 18:05:00,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:05:00,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:00,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 347311063, now seen corresponding path program 1 times [2022-07-22 18:05:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:00,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873976597] [2022-07-22 18:05:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:00,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:00,075 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 18:05:00,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:00,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873976597] [2022-07-22 18:05:00,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873976597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:00,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:00,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:00,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104282864] [2022-07-22 18:05:00,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:00,078 INFO L87 Difference]: Start difference. First operand 2218 states and 3345 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:05:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:00,345 INFO L93 Difference]: Finished difference Result 6270 states and 9459 transitions. [2022-07-22 18:05:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:00,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:05:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:00,362 INFO L225 Difference]: With dead ends: 6270 [2022-07-22 18:05:00,362 INFO L226 Difference]: Without dead ends: 4100 [2022-07-22 18:05:00,367 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 18:05:00,368 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 65 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 302 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 18:05:00,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 302 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2022-07-22 18:05:00,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 4098. [2022-07-22 18:05:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.4920673663656334) internal successors, (6113), 4097 states have internal predecessors, (6113), 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 18:05:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 6113 transitions. [2022-07-22 18:05:00,698 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 6113 transitions. Word has length 78 [2022-07-22 18:05:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:00,699 INFO L495 AbstractCegarLoop]: Abstraction has 4098 states and 6113 transitions. [2022-07-22 18:05:00,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:05:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 6113 transitions. [2022-07-22 18:05:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:05:00,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:00,700 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 18:05:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:05:00,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:00,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1594818679, now seen corresponding path program 1 times [2022-07-22 18:05:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:00,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553343616] [2022-07-22 18:05:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:00,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:00,753 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 18:05:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:00,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553343616] [2022-07-22 18:05:00,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553343616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:00,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:00,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:00,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654080866] [2022-07-22 18:05:00,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:00,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:00,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:00,756 INFO L87 Difference]: Start difference. First operand 4098 states and 6113 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:05:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:01,250 INFO L93 Difference]: Finished difference Result 11622 states and 17283 transitions. [2022-07-22 18:05:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:01,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:05:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:01,280 INFO L225 Difference]: With dead ends: 11622 [2022-07-22 18:05:01,280 INFO L226 Difference]: Without dead ends: 7572 [2022-07-22 18:05:01,288 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 18:05:01,289 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 311 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 18:05:01,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 311 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:01,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7572 states. [2022-07-22 18:05:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7572 to 7570. [2022-07-22 18:05:01,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.4692826000792707) internal successors, (11121), 7569 states have internal predecessors, (11121), 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 18:05:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 11121 transitions. [2022-07-22 18:05:01,838 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 11121 transitions. Word has length 78 [2022-07-22 18:05:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:01,838 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 11121 transitions. [2022-07-22 18:05:01,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:05:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 11121 transitions. [2022-07-22 18:05:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 18:05:01,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:01,840 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, 1] [2022-07-22 18:05:01,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:05:01,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2140223893, now seen corresponding path program 1 times [2022-07-22 18:05:01,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:01,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493144927] [2022-07-22 18:05:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:01,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:01,897 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 18:05:01,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:01,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493144927] [2022-07-22 18:05:01,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493144927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:01,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:01,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:05:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530480872] [2022-07-22 18:05:01,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:01,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:05:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:05:01,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:05:01,900 INFO L87 Difference]: Start difference. First operand 7570 states and 11121 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 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 18:05:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:02,532 INFO L93 Difference]: Finished difference Result 15092 states and 22194 transitions. [2022-07-22 18:05:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:05:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2022-07-22 18:05:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:02,550 INFO L225 Difference]: With dead ends: 15092 [2022-07-22 18:05:02,551 INFO L226 Difference]: Without dead ends: 7570 [2022-07-22 18:05:02,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:02,562 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 508 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 179 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 18:05:02,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 179 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7570 states. [2022-07-22 18:05:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7570 to 7570. [2022-07-22 18:05:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.4523715153917294) internal successors, (10993), 7569 states have internal predecessors, (10993), 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 18:05:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 10993 transitions. [2022-07-22 18:05:03,160 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 10993 transitions. Word has length 79 [2022-07-22 18:05:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:03,161 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 10993 transitions. [2022-07-22 18:05:03,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 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 18:05:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 10993 transitions. [2022-07-22 18:05:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 18:05:03,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:03,162 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, 1] [2022-07-22 18:05:03,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:05:03,162 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1438624019, now seen corresponding path program 1 times [2022-07-22 18:05:03,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:03,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401591681] [2022-07-22 18:05:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:03,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:03,230 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 18:05:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401591681] [2022-07-22 18:05:03,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401591681] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:03,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:03,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:05:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201573007] [2022-07-22 18:05:03,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:03,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:05:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:05:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:05:03,233 INFO L87 Difference]: Start difference. First operand 7570 states and 10993 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 18:05:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:04,146 INFO L93 Difference]: Finished difference Result 14033 states and 20199 transitions. [2022-07-22 18:05:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:05:04,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2022-07-22 18:05:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:04,178 INFO L225 Difference]: With dead ends: 14033 [2022-07-22 18:05:04,179 INFO L226 Difference]: Without dead ends: 14031 [2022-07-22 18:05:04,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:04,184 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 253 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:04,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 584 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14031 states. [2022-07-22 18:05:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14031 to 7954. [2022-07-22 18:05:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7954 states, 7953 states have (on average 1.4265057211115302) internal successors, (11345), 7953 states have internal predecessors, (11345), 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 18:05:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7954 states to 7954 states and 11345 transitions. [2022-07-22 18:05:04,880 INFO L78 Accepts]: Start accepts. Automaton has 7954 states and 11345 transitions. Word has length 79 [2022-07-22 18:05:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:04,881 INFO L495 AbstractCegarLoop]: Abstraction has 7954 states and 11345 transitions. [2022-07-22 18:05:04,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 18:05:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7954 states and 11345 transitions. [2022-07-22 18:05:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 18:05:04,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:04,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2022-07-22 18:05:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:05:04,888 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:04,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1530216785, now seen corresponding path program 1 times [2022-07-22 18:05:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:04,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096586171] [2022-07-22 18:05:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:04,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 18:05:04,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:04,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096586171] [2022-07-22 18:05:04,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096586171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:04,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:04,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:05:04,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815929881] [2022-07-22 18:05:04,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:04,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:05:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:04,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:05:04,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:04,977 INFO L87 Difference]: Start difference. First operand 7954 states and 11345 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:05:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:07,866 INFO L93 Difference]: Finished difference Result 56960 states and 81288 transitions. [2022-07-22 18:05:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:05:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 111 [2022-07-22 18:05:07,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:07,967 INFO L225 Difference]: With dead ends: 56960 [2022-07-22 18:05:07,967 INFO L226 Difference]: Without dead ends: 49054 [2022-07-22 18:05:07,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:05:07,990 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1397 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:07,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 915 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49054 states. [2022-07-22 18:05:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49054 to 15858. [2022-07-22 18:05:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15858 states, 15857 states have (on average 1.421769565491581) internal successors, (22545), 15857 states have internal predecessors, (22545), 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 18:05:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15858 states to 15858 states and 22545 transitions. [2022-07-22 18:05:09,598 INFO L78 Accepts]: Start accepts. Automaton has 15858 states and 22545 transitions. Word has length 111 [2022-07-22 18:05:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:09,598 INFO L495 AbstractCegarLoop]: Abstraction has 15858 states and 22545 transitions. [2022-07-22 18:05:09,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 18:05:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15858 states and 22545 transitions. [2022-07-22 18:05:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 18:05:09,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:09,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2022-07-22 18:05:09,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:05:09,606 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1517242895, now seen corresponding path program 1 times [2022-07-22 18:05:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:09,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767815227] [2022-07-22 18:05:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 18:05:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767815227] [2022-07-22 18:05:09,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767815227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:09,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:09,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:05:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744120785] [2022-07-22 18:05:09,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:09,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:05:09,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:05:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:09,715 INFO L87 Difference]: Start difference. First operand 15858 states and 22545 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 18:05:13,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:13,339 INFO L93 Difference]: Finished difference Result 64864 states and 92488 transitions. [2022-07-22 18:05:13,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:05:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 111 [2022-07-22 18:05:13,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:13,451 INFO L225 Difference]: With dead ends: 64864 [2022-07-22 18:05:13,452 INFO L226 Difference]: Without dead ends: 56958 [2022-07-22 18:05:13,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:05:13,476 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1225 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:13,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 975 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56958 states. [2022-07-22 18:05:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56958 to 27730. [2022-07-22 18:05:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27730 states, 27729 states have (on average 1.416026542608821) internal successors, (39265), 27729 states have internal predecessors, (39265), 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 18:05:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27730 states to 27730 states and 39265 transitions. [2022-07-22 18:05:16,232 INFO L78 Accepts]: Start accepts. Automaton has 27730 states and 39265 transitions. Word has length 111 [2022-07-22 18:05:16,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:16,232 INFO L495 AbstractCegarLoop]: Abstraction has 27730 states and 39265 transitions. [2022-07-22 18:05:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 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 18:05:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 27730 states and 39265 transitions. [2022-07-22 18:05:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 18:05:16,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:16,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 18:05:16,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:05:16,243 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash -47809913, now seen corresponding path program 1 times [2022-07-22 18:05:16,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:16,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673269821] [2022-07-22 18:05:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 18:05:16,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:16,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673269821] [2022-07-22 18:05:16,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673269821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:16,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:16,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:05:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974784442] [2022-07-22 18:05:16,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:16,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:05:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:05:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:16,335 INFO L87 Difference]: Start difference. First operand 27730 states and 39265 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:05:20,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:20,773 INFO L93 Difference]: Finished difference Result 72768 states and 103688 transitions. [2022-07-22 18:05:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:05:20,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 111 [2022-07-22 18:05:20,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:20,892 INFO L225 Difference]: With dead ends: 72768 [2022-07-22 18:05:20,892 INFO L226 Difference]: Without dead ends: 64862 [2022-07-22 18:05:20,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:05:20,929 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1195 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:20,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1033 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64862 states. [2022-07-22 18:05:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64862 to 35634. [2022-07-22 18:05:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35634 states, 35633 states have (on average 1.416243369909915) internal successors, (50465), 35633 states have internal predecessors, (50465), 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 18:05:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35634 states to 35634 states and 50465 transitions. [2022-07-22 18:05:24,550 INFO L78 Accepts]: Start accepts. Automaton has 35634 states and 50465 transitions. Word has length 111 [2022-07-22 18:05:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:24,551 INFO L495 AbstractCegarLoop]: Abstraction has 35634 states and 50465 transitions. [2022-07-22 18:05:24,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:05:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 35634 states and 50465 transitions. [2022-07-22 18:05:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 18:05:24,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:24,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 18:05:24,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:05:24,563 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1283268953, now seen corresponding path program 1 times [2022-07-22 18:05:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:24,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296767050] [2022-07-22 18:05:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 18:05:24,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:24,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296767050] [2022-07-22 18:05:24,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296767050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:24,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:24,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:05:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333437928] [2022-07-22 18:05:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:24,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:05:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:05:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:24,652 INFO L87 Difference]: Start difference. First operand 35634 states and 50465 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 18:05:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:30,394 INFO L93 Difference]: Finished difference Result 80672 states and 114888 transitions. [2022-07-22 18:05:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:05:30,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 111 [2022-07-22 18:05:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:30,529 INFO L225 Difference]: With dead ends: 80672 [2022-07-22 18:05:30,529 INFO L226 Difference]: Without dead ends: 72766 [2022-07-22 18:05:30,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:05:30,564 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1265 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:30,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 1048 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72766 states. [2022-07-22 18:05:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72766 to 43538. [2022-07-22 18:05:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43538 states, 43537 states have (on average 1.4163814686358729) internal successors, (61665), 43537 states have internal predecessors, (61665), 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 18:05:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43538 states to 43538 states and 61665 transitions. [2022-07-22 18:05:35,141 INFO L78 Accepts]: Start accepts. Automaton has 43538 states and 61665 transitions. Word has length 111 [2022-07-22 18:05:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:35,142 INFO L495 AbstractCegarLoop]: Abstraction has 43538 states and 61665 transitions. [2022-07-22 18:05:35,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 18:05:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 43538 states and 61665 transitions. [2022-07-22 18:05:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 18:05:35,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:35,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 18:05:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:05:35,155 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1590702791, now seen corresponding path program 1 times [2022-07-22 18:05:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:35,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56961156] [2022-07-22 18:05:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 18:05:35,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:35,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56961156] [2022-07-22 18:05:35,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56961156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:35,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:35,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:05:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025128071] [2022-07-22 18:05:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:05:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:05:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:05:35,372 INFO L87 Difference]: Start difference. First operand 43538 states and 61665 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 18:05:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:42,409 INFO L93 Difference]: Finished difference Result 88576 states and 126088 transitions. [2022-07-22 18:05:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:05:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 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 111 [2022-07-22 18:05:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:42,549 INFO L225 Difference]: With dead ends: 88576 [2022-07-22 18:05:42,549 INFO L226 Difference]: Without dead ends: 80670 [2022-07-22 18:05:42,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-22 18:05:42,581 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1371 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:42,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1021 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80670 states.