./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.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 b6fdb2b1846dcedb57e8d072ea261769567fc55001417142c985abb5c6635687 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:00:48,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:00:48,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:00:48,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:00:48,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:00:48,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:00:48,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:00:48,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:00:48,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:00:48,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:00:48,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:00:48,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:00:48,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:00:48,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:00:48,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:00:48,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:00:48,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:00:48,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:00:48,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:00:48,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:00:48,754 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:00:48,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:00:48,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:00:48,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:00:48,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:00:48,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:00:48,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:00:48,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:00:48,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:00:48,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:00:48,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:00:48,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:00:48,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:00:48,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:00:48,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:00:48,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:00:48,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:00:48,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:00:48,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:00:48,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:00:48,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:00:48,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:00:48,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:00:48,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:00:48,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:00:48,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:00:48,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:00:48,815 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:00:48,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:00:48,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:00:48,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:00:48,827 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:00:48,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:00:48,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:00:48,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:00:48,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:00:48,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:00:48,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:00:48,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:00:48,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:00:48,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:00:48,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:00:48,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:00:48,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:00:48,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:00:48,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:00:48,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:00:48,832 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:00:48,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:00:48,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:00:48,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6fdb2b1846dcedb57e8d072ea261769567fc55001417142c985abb5c6635687 [2022-07-22 18:00:49,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:00:49,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:00:49,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:00:49,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:00:49,226 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:00:49,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-07-22 18:00:49,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3293942be/3763dcd48ed545b48bd9f810e1f43afa/FLAG39c21f2cc [2022-07-22 18:00:50,077 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:00:50,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-07-22 18:00:50,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3293942be/3763dcd48ed545b48bd9f810e1f43afa/FLAG39c21f2cc [2022-07-22 18:00:50,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3293942be/3763dcd48ed545b48bd9f810e1f43afa [2022-07-22 18:00:50,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:00:50,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:00:50,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:00:50,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:00:50,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:00:50,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:00:50" (1/1) ... [2022-07-22 18:00:50,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba24473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:50, skipping insertion in model container [2022-07-22 18:00:50,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:00:50" (1/1) ... [2022-07-22 18:00:50,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:00:50,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:00:50,970 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c[52017,52030] [2022-07-22 18:00:50,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:00:51,011 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:00:51,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c[52017,52030] [2022-07-22 18:00:51,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:00:51,243 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:00:51,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51 WrapperNode [2022-07-22 18:00:51,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:00:51,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:00:51,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:00:51,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:00:51,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,416 INFO L137 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2011 [2022-07-22 18:00:51,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:00:51,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:00:51,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:00:51,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:00:51,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:00:51,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:00:51,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:00:51,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:00:51,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (1/1) ... [2022-07-22 18:00:51,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:00:51,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:00:51,701 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 18:00:51,743 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 18:00:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:00:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:00:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:00:51,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:00:52,049 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:00:52,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:00:53,729 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:00:53,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:00:53,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:00:53,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:00:53 BoogieIcfgContainer [2022-07-22 18:00:53,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:00:53,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:00:53,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:00:53,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:00:53,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:00:50" (1/3) ... [2022-07-22 18:00:53,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769b3cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:00:53, skipping insertion in model container [2022-07-22 18:00:53,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:00:51" (2/3) ... [2022-07-22 18:00:53,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769b3cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:00:53, skipping insertion in model container [2022-07-22 18:00:53,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:00:53" (3/3) ... [2022-07-22 18:00:53,768 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c [2022-07-22 18:00:53,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:00:53,795 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:00:53,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:00:53,948 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@77be5604, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@282d22cd [2022-07-22 18:00:53,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:00:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 684 states have (on average 1.8464912280701755) internal successors, (1263), 685 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:00:54,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:54,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:54,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1294677134, now seen corresponding path program 1 times [2022-07-22 18:00:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204183187] [2022-07-22 18:00:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:54,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:54,722 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 18:00:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204183187] [2022-07-22 18:00:54,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204183187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:54,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:54,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:00:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842434444] [2022-07-22 18:00:54,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:00:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:00:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:00:54,783 INFO L87 Difference]: Start difference. First operand has 686 states, 684 states have (on average 1.8464912280701755) internal successors, (1263), 685 states have internal predecessors, (1263), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:54,864 INFO L93 Difference]: Finished difference Result 847 states and 1540 transitions. [2022-07-22 18:00:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:00:54,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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 153 [2022-07-22 18:00:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:54,894 INFO L225 Difference]: With dead ends: 847 [2022-07-22 18:00:54,894 INFO L226 Difference]: Without dead ends: 682 [2022-07-22 18:00:54,903 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 18:00:54,908 INFO L413 NwaCegarLoop]: 1260 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, 1260 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 18:00:54,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-07-22 18:00:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-07-22 18:00:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.844346549192364) internal successors, (1256), 681 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1256 transitions. [2022-07-22 18:00:55,055 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1256 transitions. Word has length 153 [2022-07-22 18:00:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:55,057 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1256 transitions. [2022-07-22 18:00:55,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1256 transitions. [2022-07-22 18:00:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:00:55,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:55,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:55,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:00:55,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1804150224, now seen corresponding path program 1 times [2022-07-22 18:00:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:55,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734256904] [2022-07-22 18:00:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:55,369 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 18:00:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734256904] [2022-07-22 18:00:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734256904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:55,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:55,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:00:55,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926344403] [2022-07-22 18:00:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:55,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:00:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:00:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:00:55,388 INFO L87 Difference]: Start difference. First operand 682 states and 1256 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:55,542 INFO L93 Difference]: Finished difference Result 842 states and 1530 transitions. [2022-07-22 18:00:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:00:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-07-22 18:00:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:55,546 INFO L225 Difference]: With dead ends: 842 [2022-07-22 18:00:55,546 INFO L226 Difference]: Without dead ends: 682 [2022-07-22 18:00:55,547 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 18:00:55,549 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 3 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4973 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 18:00:55,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4973 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:00:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-07-22 18:00:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2022-07-22 18:00:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 1.7856093979441998) internal successors, (1216), 681 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1216 transitions. [2022-07-22 18:00:55,582 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1216 transitions. Word has length 153 [2022-07-22 18:00:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:55,600 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1216 transitions. [2022-07-22 18:00:55,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1216 transitions. [2022-07-22 18:00:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-22 18:00:55,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:55,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:55,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:00:55,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash -63327919, now seen corresponding path program 1 times [2022-07-22 18:00:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:55,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414344346] [2022-07-22 18:00:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:55,833 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 18:00:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:55,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414344346] [2022-07-22 18:00:55,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414344346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:55,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:55,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525072916] [2022-07-22 18:00:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:55,837 INFO L87 Difference]: Start difference. First operand 682 states and 1216 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:55,899 INFO L93 Difference]: Finished difference Result 981 states and 1731 transitions. [2022-07-22 18:00:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:55,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 192 [2022-07-22 18:00:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:55,905 INFO L225 Difference]: With dead ends: 981 [2022-07-22 18:00:55,906 INFO L226 Difference]: Without dead ends: 825 [2022-07-22 18:00:55,908 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 18:00:55,912 INFO L413 NwaCegarLoop]: 1425 mSDtfsCounter, 237 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:55,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2597 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-07-22 18:00:55,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 823. [2022-07-22 18:00:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 1.77007299270073) internal successors, (1455), 822 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1455 transitions. [2022-07-22 18:00:55,943 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1455 transitions. Word has length 192 [2022-07-22 18:00:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:55,944 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1455 transitions. [2022-07-22 18:00:55,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:55,944 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1455 transitions. [2022-07-22 18:00:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 18:00:55,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:55,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:55,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:00:55,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:55,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1559342006, now seen corresponding path program 1 times [2022-07-22 18:00:55,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:55,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26452024] [2022-07-22 18:00:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:55,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:56,152 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 18:00:56,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26452024] [2022-07-22 18:00:56,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26452024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:56,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:56,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882787402] [2022-07-22 18:00:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:56,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:56,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:56,169 INFO L87 Difference]: Start difference. First operand 823 states and 1455 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:56,207 INFO L93 Difference]: Finished difference Result 1112 states and 1954 transitions. [2022-07-22 18:00:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2022-07-22 18:00:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:56,211 INFO L225 Difference]: With dead ends: 1112 [2022-07-22 18:00:56,212 INFO L226 Difference]: Without dead ends: 956 [2022-07-22 18:00:56,213 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 18:00:56,218 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 246 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2609 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 18:00:56,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-07-22 18:00:56,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 954. [2022-07-22 18:00:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 953 states have (on average 1.763903462749213) internal successors, (1681), 953 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1681 transitions. [2022-07-22 18:00:56,267 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1681 transitions. Word has length 196 [2022-07-22 18:00:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:56,268 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1681 transitions. [2022-07-22 18:00:56,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1681 transitions. [2022-07-22 18:00:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 18:00:56,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:56,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:56,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:00:56,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2005005805, now seen corresponding path program 1 times [2022-07-22 18:00:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:56,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567736316] [2022-07-22 18:00:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:56,422 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 18:00:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567736316] [2022-07-22 18:00:56,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567736316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:56,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:56,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139155958] [2022-07-22 18:00:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:56,437 INFO L87 Difference]: Start difference. First operand 954 states and 1681 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:56,505 INFO L93 Difference]: Finished difference Result 1773 states and 3084 transitions. [2022-07-22 18:00:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:56,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2022-07-22 18:00:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:56,510 INFO L225 Difference]: With dead ends: 1773 [2022-07-22 18:00:56,510 INFO L226 Difference]: Without dead ends: 1347 [2022-07-22 18:00:56,510 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 18:00:56,523 INFO L413 NwaCegarLoop]: 1413 mSDtfsCounter, 237 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:56,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2594 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-07-22 18:00:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1345. [2022-07-22 18:00:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1344 states have (on average 1.7462797619047619) internal successors, (2347), 1344 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2347 transitions. [2022-07-22 18:00:56,583 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2347 transitions. Word has length 196 [2022-07-22 18:00:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:56,585 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 2347 transitions. [2022-07-22 18:00:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2347 transitions. [2022-07-22 18:00:56,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 18:00:56,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:56,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:00:56,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash 703257958, now seen corresponding path program 1 times [2022-07-22 18:00:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:56,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438565045] [2022-07-22 18:00:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:56,734 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 18:00:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:56,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438565045] [2022-07-22 18:00:56,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438565045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:56,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:56,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:56,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503177938] [2022-07-22 18:00:56,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:56,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:56,736 INFO L87 Difference]: Start difference. First operand 1345 states and 2347 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:56,788 INFO L93 Difference]: Finished difference Result 2138 states and 3706 transitions. [2022-07-22 18:00:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:56,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2022-07-22 18:00:56,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:56,794 INFO L225 Difference]: With dead ends: 2138 [2022-07-22 18:00:56,807 INFO L226 Difference]: Without dead ends: 1712 [2022-07-22 18:00:56,808 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 18:00:56,809 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 238 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2585 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 18:00:56,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 2585 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2022-07-22 18:00:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1710. [2022-07-22 18:00:56,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 1.7366881217086014) internal successors, (2968), 1709 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2968 transitions. [2022-07-22 18:00:56,866 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2968 transitions. Word has length 200 [2022-07-22 18:00:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:56,867 INFO L495 AbstractCegarLoop]: Abstraction has 1710 states and 2968 transitions. [2022-07-22 18:00:56,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2968 transitions. [2022-07-22 18:00:56,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 18:00:56,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:56,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:56,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:00:56,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2120140937, now seen corresponding path program 1 times [2022-07-22 18:00:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650051762] [2022-07-22 18:00:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:57,062 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 18:00:57,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:57,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650051762] [2022-07-22 18:00:57,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650051762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:57,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:57,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537450298] [2022-07-22 18:00:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:57,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:57,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:57,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:57,065 INFO L87 Difference]: Start difference. First operand 1710 states and 2968 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:57,133 INFO L93 Difference]: Finished difference Result 3943 states and 6771 transitions. [2022-07-22 18:00:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2022-07-22 18:00:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:57,142 INFO L225 Difference]: With dead ends: 3943 [2022-07-22 18:00:57,155 INFO L226 Difference]: Without dead ends: 2777 [2022-07-22 18:00:57,158 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 18:00:57,159 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 229 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:57,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2571 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:57,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-07-22 18:00:57,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2775. [2022-07-22 18:00:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 1.7177361211247297) internal successors, (4765), 2774 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4765 transitions. [2022-07-22 18:00:57,265 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4765 transitions. Word has length 200 [2022-07-22 18:00:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:57,265 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4765 transitions. [2022-07-22 18:00:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4765 transitions. [2022-07-22 18:00:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-22 18:00:57,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:57,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:57,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:00:57,268 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1916941442, now seen corresponding path program 1 times [2022-07-22 18:00:57,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:57,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417120427] [2022-07-22 18:00:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:57,348 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 18:00:57,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:57,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417120427] [2022-07-22 18:00:57,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417120427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:57,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:57,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279530438] [2022-07-22 18:00:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:57,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:57,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:57,367 INFO L87 Difference]: Start difference. First operand 2775 states and 4765 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:57,410 INFO L93 Difference]: Finished difference Result 4898 states and 8386 transitions. [2022-07-22 18:00:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:57,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2022-07-22 18:00:57,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:57,422 INFO L225 Difference]: With dead ends: 4898 [2022-07-22 18:00:57,422 INFO L226 Difference]: Without dead ends: 3732 [2022-07-22 18:00:57,425 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 18:00:57,425 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 230 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2561 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 18:00:57,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2561 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2022-07-22 18:00:57,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3730. [2022-07-22 18:00:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3729 states have (on average 1.7106462858675249) internal successors, (6379), 3729 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 6379 transitions. [2022-07-22 18:00:57,498 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 6379 transitions. Word has length 204 [2022-07-22 18:00:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:57,498 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 6379 transitions. [2022-07-22 18:00:57,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 6379 transitions. [2022-07-22 18:00:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-22 18:00:57,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:57,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:57,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:00:57,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:57,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash -111728347, now seen corresponding path program 1 times [2022-07-22 18:00:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73275588] [2022-07-22 18:00:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:57,611 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 18:00:57,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:57,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73275588] [2022-07-22 18:00:57,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73275588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:57,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:57,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:57,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649252285] [2022-07-22 18:00:57,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:57,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:57,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:57,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:57,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:57,613 INFO L87 Difference]: Start difference. First operand 3730 states and 6379 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:57,695 INFO L93 Difference]: Finished difference Result 9773 states and 16578 transitions. [2022-07-22 18:00:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:57,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2022-07-22 18:00:57,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:57,717 INFO L225 Difference]: With dead ends: 9773 [2022-07-22 18:00:57,717 INFO L226 Difference]: Without dead ends: 6603 [2022-07-22 18:00:57,724 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 18:00:57,726 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 221 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:57,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2548 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2022-07-22 18:00:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6601. [2022-07-22 18:00:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6601 states, 6600 states have (on average 1.691969696969697) internal successors, (11167), 6600 states have internal predecessors, (11167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6601 states to 6601 states and 11167 transitions. [2022-07-22 18:00:57,927 INFO L78 Accepts]: Start accepts. Automaton has 6601 states and 11167 transitions. Word has length 204 [2022-07-22 18:00:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:57,928 INFO L495 AbstractCegarLoop]: Abstraction has 6601 states and 11167 transitions. [2022-07-22 18:00:57,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 6601 states and 11167 transitions. [2022-07-22 18:00:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 18:00:57,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:57,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:57,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:00:57,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1237014942, now seen corresponding path program 1 times [2022-07-22 18:00:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:57,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147240446] [2022-07-22 18:00:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:58,012 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 18:00:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:58,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147240446] [2022-07-22 18:00:58,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147240446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:58,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:58,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:58,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760895621] [2022-07-22 18:00:58,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:58,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:58,022 INFO L87 Difference]: Start difference. First operand 6601 states and 11167 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:58,199 INFO L93 Difference]: Finished difference Result 12282 states and 20770 transitions. [2022-07-22 18:00:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 208 [2022-07-22 18:00:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:58,233 INFO L225 Difference]: With dead ends: 12282 [2022-07-22 18:00:58,234 INFO L226 Difference]: Without dead ends: 9112 [2022-07-22 18:00:58,237 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 18:00:58,238 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 222 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2537 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 18:00:58,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2537 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2022-07-22 18:00:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 9110. [2022-07-22 18:00:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9110 states, 9109 states have (on average 1.6860248106268525) internal successors, (15358), 9109 states have internal predecessors, (15358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 15358 transitions. [2022-07-22 18:00:58,488 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 15358 transitions. Word has length 208 [2022-07-22 18:00:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:58,489 INFO L495 AbstractCegarLoop]: Abstraction has 9110 states and 15358 transitions. [2022-07-22 18:00:58,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 15358 transitions. [2022-07-22 18:00:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-22 18:00:58,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:58,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:58,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:00:58,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1536026687, now seen corresponding path program 1 times [2022-07-22 18:00:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:58,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051491036] [2022-07-22 18:00:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:58,575 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 18:00:58,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051491036] [2022-07-22 18:00:58,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051491036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:58,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:58,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:58,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749222249] [2022-07-22 18:00:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:58,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:58,578 INFO L87 Difference]: Start difference. First operand 9110 states and 15358 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:58,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:58,868 INFO L93 Difference]: Finished difference Result 25287 states and 42333 transitions. [2022-07-22 18:00:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:58,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 208 [2022-07-22 18:00:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:58,896 INFO L225 Difference]: With dead ends: 25287 [2022-07-22 18:00:58,896 INFO L226 Difference]: Without dead ends: 16753 [2022-07-22 18:00:58,904 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 18:00:58,905 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 213 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:00:58,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2525 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16753 states. [2022-07-22 18:00:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16753 to 16751. [2022-07-22 18:00:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16751 states, 16750 states have (on average 1.6664477611940298) internal successors, (27913), 16750 states have internal predecessors, (27913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16751 states to 16751 states and 27913 transitions. [2022-07-22 18:00:59,364 INFO L78 Accepts]: Start accepts. Automaton has 16751 states and 27913 transitions. Word has length 208 [2022-07-22 18:00:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:00:59,365 INFO L495 AbstractCegarLoop]: Abstraction has 16751 states and 27913 transitions. [2022-07-22 18:00:59,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 16751 states and 27913 transitions. [2022-07-22 18:00:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-22 18:00:59,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:00:59,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:00:59,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:00:59,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:00:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:00:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash -511882054, now seen corresponding path program 1 times [2022-07-22 18:00:59,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:00:59,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185495986] [2022-07-22 18:00:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:00:59,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:00:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:00:59,437 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 18:00:59,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:00:59,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185495986] [2022-07-22 18:00:59,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185495986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:00:59,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:00:59,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:00:59,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351946414] [2022-07-22 18:00:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:00:59,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:00:59,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:00:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:00:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:59,440 INFO L87 Difference]: Start difference. First operand 16751 states and 27913 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:00:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:00:59,796 INFO L93 Difference]: Finished difference Result 31810 states and 53050 transitions. [2022-07-22 18:00:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:00:59,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 212 [2022-07-22 18:00:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:00:59,854 INFO L225 Difference]: With dead ends: 31810 [2022-07-22 18:00:59,854 INFO L226 Difference]: Without dead ends: 23276 [2022-07-22 18:00:59,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:00:59,867 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 214 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2513 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 18:00:59,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2513 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:00:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23276 states. [2022-07-22 18:01:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23276 to 23274. [2022-07-22 18:01:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23274 states, 23273 states have (on average 1.6598203927297728) internal successors, (38629), 23273 states have internal predecessors, (38629), 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 18:01:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23274 states to 23274 states and 38629 transitions. [2022-07-22 18:01:00,354 INFO L78 Accepts]: Start accepts. Automaton has 23274 states and 38629 transitions. Word has length 212 [2022-07-22 18:01:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:00,354 INFO L495 AbstractCegarLoop]: Abstraction has 23274 states and 38629 transitions. [2022-07-22 18:01:00,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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 18:01:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 23274 states and 38629 transitions. [2022-07-22 18:01:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-22 18:01:00,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:00,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:00,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:01:00,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:00,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:00,358 INFO L85 PathProgramCache]: Analyzing trace with hash -818506659, now seen corresponding path program 1 times [2022-07-22 18:01:00,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:00,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172321125] [2022-07-22 18:01:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:00,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:00,543 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 18:01:00,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:00,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172321125] [2022-07-22 18:01:00,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172321125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:00,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:00,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:01:00,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196756503] [2022-07-22 18:01:00,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:00,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:01:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:00,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:01:00,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:01:00,546 INFO L87 Difference]: Start difference. First operand 23274 states and 38629 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 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 18:01:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:03,050 INFO L93 Difference]: Finished difference Result 180677 states and 301268 transitions. [2022-07-22 18:01:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:01:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 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 212 [2022-07-22 18:01:03,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:03,447 INFO L225 Difference]: With dead ends: 180677 [2022-07-22 18:01:03,447 INFO L226 Difference]: Without dead ends: 157995 [2022-07-22 18:01:03,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:01:03,508 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 2705 mSDsluCounter, 10604 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 11831 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:03,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 11831 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:01:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157995 states. [2022-07-22 18:01:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157995 to 45537. [2022-07-22 18:01:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45537 states, 45536 states have (on average 1.6526923752635279) internal successors, (75257), 45536 states have internal predecessors, (75257), 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 18:01:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45537 states to 45537 states and 75257 transitions. [2022-07-22 18:01:05,609 INFO L78 Accepts]: Start accepts. Automaton has 45537 states and 75257 transitions. Word has length 212 [2022-07-22 18:01:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:05,609 INFO L495 AbstractCegarLoop]: Abstraction has 45537 states and 75257 transitions. [2022-07-22 18:01:05,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 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 18:01:05,610 INFO L276 IsEmpty]: Start isEmpty. Operand 45537 states and 75257 transitions. [2022-07-22 18:01:05,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-22 18:01:05,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:05,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:05,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:01:05,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1870282202, now seen corresponding path program 1 times [2022-07-22 18:01:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:05,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573520048] [2022-07-22 18:01:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:05,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:05,709 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 18:01:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:05,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573520048] [2022-07-22 18:01:05,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573520048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:05,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:05,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138041177] [2022-07-22 18:01:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:05,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:05,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:05,711 INFO L87 Difference]: Start difference. First operand 45537 states and 75257 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 18:01:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:07,932 INFO L93 Difference]: Finished difference Result 150684 states and 250034 transitions. [2022-07-22 18:01:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:01:07,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 213 [2022-07-22 18:01:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:08,127 INFO L225 Difference]: With dead ends: 150684 [2022-07-22 18:01:08,127 INFO L226 Difference]: Without dead ends: 105739 [2022-07-22 18:01:08,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:01:08,180 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 776 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:08,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 3839 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105739 states. [2022-07-22 18:01:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105739 to 75475. [2022-07-22 18:01:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75475 states, 75474 states have (on average 1.6526618438137637) internal successors, (124733), 75474 states have internal predecessors, (124733), 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 18:01:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75475 states to 75475 states and 124733 transitions. [2022-07-22 18:01:10,904 INFO L78 Accepts]: Start accepts. Automaton has 75475 states and 124733 transitions. Word has length 213 [2022-07-22 18:01:10,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:10,905 INFO L495 AbstractCegarLoop]: Abstraction has 75475 states and 124733 transitions. [2022-07-22 18:01:10,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 18:01:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 75475 states and 124733 transitions. [2022-07-22 18:01:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 18:01:10,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:10,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:10,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:01:10,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:10,918 INFO L85 PathProgramCache]: Analyzing trace with hash 53418676, now seen corresponding path program 1 times [2022-07-22 18:01:10,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:10,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173570221] [2022-07-22 18:01:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:10,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:10,989 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 18:01:10,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:10,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173570221] [2022-07-22 18:01:10,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173570221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:10,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:10,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:10,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741999338] [2022-07-22 18:01:10,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:10,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:10,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:10,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:10,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:10,992 INFO L87 Difference]: Start difference. First operand 75475 states and 124733 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 18:01:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:15,160 INFO L93 Difference]: Finished difference Result 248916 states and 411946 transitions. [2022-07-22 18:01:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:01:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 214 [2022-07-22 18:01:15,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:15,584 INFO L225 Difference]: With dead ends: 248916 [2022-07-22 18:01:15,584 INFO L226 Difference]: Without dead ends: 174033 [2022-07-22 18:01:15,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:01:15,724 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 774 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:15,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 3834 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:01:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174033 states. [2022-07-22 18:01:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174033 to 124485. [2022-07-22 18:01:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124485 states, 124484 states have (on average 1.6480752546512) internal successors, (205159), 124484 states have internal predecessors, (205159), 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 18:01:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124485 states to 124485 states and 205159 transitions. [2022-07-22 18:01:21,128 INFO L78 Accepts]: Start accepts. Automaton has 124485 states and 205159 transitions. Word has length 214 [2022-07-22 18:01:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:21,128 INFO L495 AbstractCegarLoop]: Abstraction has 124485 states and 205159 transitions. [2022-07-22 18:01:21,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 18:01:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 124485 states and 205159 transitions. [2022-07-22 18:01:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 18:01:21,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:21,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:01:21,161 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -272391907, now seen corresponding path program 1 times [2022-07-22 18:01:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:21,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984179019] [2022-07-22 18:01:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:21,294 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 18:01:21,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:21,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984179019] [2022-07-22 18:01:21,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984179019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:21,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:21,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872375364] [2022-07-22 18:01:21,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:21,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:21,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:21,298 INFO L87 Difference]: Start difference. First operand 124485 states and 205159 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 18:01:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:01:29,636 INFO L93 Difference]: Finished difference Result 410460 states and 677530 transitions. [2022-07-22 18:01:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:01:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 215 [2022-07-22 18:01:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:01:30,333 INFO L225 Difference]: With dead ends: 410460 [2022-07-22 18:01:30,333 INFO L226 Difference]: Without dead ends: 286567 [2022-07-22 18:01:30,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:01:30,487 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 772 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:01:30,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3836 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:01:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286567 states. [2022-07-22 18:01:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286567 to 205083. [2022-07-22 18:01:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205083 states, 205082 states have (on average 1.6436401049336362) internal successors, (337081), 205082 states have internal predecessors, (337081), 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 18:01:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205083 states to 205083 states and 337081 transitions. [2022-07-22 18:01:38,908 INFO L78 Accepts]: Start accepts. Automaton has 205083 states and 337081 transitions. Word has length 215 [2022-07-22 18:01:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:01:38,908 INFO L495 AbstractCegarLoop]: Abstraction has 205083 states and 337081 transitions. [2022-07-22 18:01:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 18:01:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 205083 states and 337081 transitions. [2022-07-22 18:01:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-22 18:01:38,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:01:38,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:01:38,911 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:01:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:01:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1613581045, now seen corresponding path program 1 times [2022-07-22 18:01:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:01:38,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123165949] [2022-07-22 18:01:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:01:38,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:01:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:01:39,777 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 18:01:39,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:01:39,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123165949] [2022-07-22 18:01:39,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123165949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:01:39,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:01:39,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:01:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447393192] [2022-07-22 18:01:39,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:01:39,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:01:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:01:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:01:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:01:39,788 INFO L87 Difference]: Start difference. First operand 205083 states and 337081 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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)