./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a3df27f87602fca8935d2269a873dfd3f1a5195383d477434680a0bc703d239a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:27:25,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:27:25,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:27:25,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:27:25,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:27:25,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:27:25,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:27:25,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:27:25,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:27:25,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:27:25,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:27:25,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:27:25,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:27:25,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:27:25,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:27:25,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:27:25,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:27:25,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:27:25,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:27:25,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:27:25,921 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:27:25,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:27:25,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:27:25,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:27:25,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:27:25,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:27:25,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:27:25,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:27:25,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:27:25,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:27:25,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:27:25,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:27:25,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:27:25,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:27:25,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:27:25,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:27:25,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:27:25,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:27:25,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:27:25,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:27:25,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:27:25,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:27:25,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:27:25,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:27:25,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:27:25,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:27:25,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:27:25,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:27:25,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:27:25,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:27:25,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:27:25,983 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:27:25,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:27:25,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:27:25,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:27:25,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:27:25,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:27:25,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:27:25,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:27:25,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:27:25,985 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:27:25,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:27:25,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:27:25,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:27:25,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:27:25,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:27:25,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:27:25,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:27:25,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:27:25,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:27:25,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:27:25,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:27:25,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:27:25,988 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:27:25,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:27:25,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:27:25,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3df27f87602fca8935d2269a873dfd3f1a5195383d477434680a0bc703d239a [2022-07-13 18:27:26,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:27:26,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:27:26,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:27:26,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:27:26,269 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:27:26,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2022-07-13 18:27:26,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de28ede8/5fd39d0ba6b141c7a472e65422b02873/FLAG30df4b706 [2022-07-13 18:27:26,831 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:27:26,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2022-07-13 18:27:26,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de28ede8/5fd39d0ba6b141c7a472e65422b02873/FLAG30df4b706 [2022-07-13 18:27:27,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de28ede8/5fd39d0ba6b141c7a472e65422b02873 [2022-07-13 18:27:27,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:27:27,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:27:27,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:27:27,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:27:27,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:27:27,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f727a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27, skipping insertion in model container [2022-07-13 18:27:27,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:27:27,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:27:27,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2022-07-13 18:27:27,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:27:27,524 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:27:27,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2022-07-13 18:27:27,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:27:27,609 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:27:27,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27 WrapperNode [2022-07-13 18:27:27,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:27:27,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:27:27,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:27:27,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:27:27,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,660 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 523 [2022-07-13 18:27:27,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:27:27,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:27:27,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:27:27,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:27:27,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:27:27,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:27:27,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:27:27,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:27:27,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (1/1) ... [2022-07-13 18:27:27,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:27:27,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:27:27,725 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) [2022-07-13 18:27:27,748 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 [2022-07-13 18:27:27,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:27:27,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:27:27,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:27:27,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:27:27,882 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:27:27,884 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:27:28,511 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:27:28,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:27:28,519 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:27:28,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:27:28 BoogieIcfgContainer [2022-07-13 18:27:28,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:27:28,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:27:28,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:27:28,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:27:28,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:27:27" (1/3) ... [2022-07-13 18:27:28,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a90278b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:27:28, skipping insertion in model container [2022-07-13 18:27:28,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:27" (2/3) ... [2022-07-13 18:27:28,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a90278b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:27:28, skipping insertion in model container [2022-07-13 18:27:28,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:27:28" (3/3) ... [2022-07-13 18:27:28,530 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2022-07-13 18:27:28,542 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:27:28,543 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:27:28,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:27:28,616 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@12f9eccc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b4625e9 [2022-07-13 18:27:28,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:27:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2022-07-13 18:27:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 18:27:28,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:28,642 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] [2022-07-13 18:27:28,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash 118130595, now seen corresponding path program 1 times [2022-07-13 18:27:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:28,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680561574] [2022-07-13 18:27:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:28,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:28,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680561574] [2022-07-13 18:27:28,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680561574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:28,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:28,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:27:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036007796] [2022-07-13 18:27:28,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:28,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:27:28,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:27:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:27:28,946 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2022-07-13 18:27:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:28,987 INFO L93 Difference]: Finished difference Result 228 states and 387 transitions. [2022-07-13 18:27:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:27:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2022-07-13 18:27:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:29,001 INFO L225 Difference]: With dead ends: 228 [2022-07-13 18:27:29,002 INFO L226 Difference]: Without dead ends: 145 [2022-07-13 18:27:29,005 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 [2022-07-13 18:27:29,009 INFO L413 NwaCegarLoop]: 252 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, 252 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 [2022-07-13 18:27:29,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-13 18:27:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-07-13 18:27:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.75) internal successors, (252), 144 states have internal predecessors, (252), 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) [2022-07-13 18:27:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 252 transitions. [2022-07-13 18:27:29,061 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 252 transitions. Word has length 45 [2022-07-13 18:27:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:29,061 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 252 transitions. [2022-07-13 18:27:29,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2022-07-13 18:27:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 252 transitions. [2022-07-13 18:27:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 18:27:29,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:29,067 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] [2022-07-13 18:27:29,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:27:29,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:29,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1253676703, now seen corresponding path program 1 times [2022-07-13 18:27:29,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:29,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408135033] [2022-07-13 18:27:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:29,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408135033] [2022-07-13 18:27:29,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408135033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:29,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:29,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:27:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884606993] [2022-07-13 18:27:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:29,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:27:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:27:29,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:27:29,186 INFO L87 Difference]: Start difference. First operand 145 states and 252 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-07-13 18:27:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:29,274 INFO L93 Difference]: Finished difference Result 227 states and 380 transitions. [2022-07-13 18:27:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:27:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2022-07-13 18:27:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:29,276 INFO L225 Difference]: With dead ends: 227 [2022-07-13 18:27:29,276 INFO L226 Difference]: Without dead ends: 145 [2022-07-13 18:27:29,277 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 [2022-07-13 18:27:29,279 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:29,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 936 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-13 18:27:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-07-13 18:27:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3263888888888888) internal successors, (191), 144 states have internal predecessors, (191), 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) [2022-07-13 18:27:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 191 transitions. [2022-07-13 18:27:29,286 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 191 transitions. Word has length 45 [2022-07-13 18:27:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:29,287 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 191 transitions. [2022-07-13 18:27:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-07-13 18:27:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 191 transitions. [2022-07-13 18:27:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:27:29,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:29,289 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] [2022-07-13 18:27:29,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:27:29,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1781682001, now seen corresponding path program 1 times [2022-07-13 18:27:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:29,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282656818] [2022-07-13 18:27:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:29,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282656818] [2022-07-13 18:27:29,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282656818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:29,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:29,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055032577] [2022-07-13 18:27:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:29,519 INFO L87 Difference]: Start difference. First operand 145 states and 191 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:29,559 INFO L93 Difference]: Finished difference Result 295 states and 429 transitions. [2022-07-13 18:27:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:29,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 18:27:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:29,565 INFO L225 Difference]: With dead ends: 295 [2022-07-13 18:27:29,566 INFO L226 Difference]: Without dead ends: 217 [2022-07-13 18:27:29,567 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 [2022-07-13 18:27:29,569 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 102 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 393 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 [2022-07-13 18:27:29,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 393 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-13 18:27:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-07-13 18:27:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.4158878504672898) internal successors, (303), 214 states have internal predecessors, (303), 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) [2022-07-13 18:27:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 303 transitions. [2022-07-13 18:27:29,589 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 303 transitions. Word has length 105 [2022-07-13 18:27:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:29,591 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 303 transitions. [2022-07-13 18:27:29,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 303 transitions. [2022-07-13 18:27:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:27:29,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:29,597 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] [2022-07-13 18:27:29,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:27:29,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1036099271, now seen corresponding path program 1 times [2022-07-13 18:27:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:29,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397972431] [2022-07-13 18:27:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:29,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:29,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:29,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397972431] [2022-07-13 18:27:29,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397972431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:29,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:29,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:29,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413084439] [2022-07-13 18:27:29,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:29,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:29,708 INFO L87 Difference]: Start difference. First operand 215 states and 303 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:29,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:29,731 INFO L93 Difference]: Finished difference Result 499 states and 755 transitions. [2022-07-13 18:27:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:29,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 18:27:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:29,733 INFO L225 Difference]: With dead ends: 499 [2022-07-13 18:27:29,734 INFO L226 Difference]: Without dead ends: 351 [2022-07-13 18:27:29,734 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 [2022-07-13 18:27:29,735 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 98 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 392 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 [2022-07-13 18:27:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 392 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-13 18:27:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2022-07-13 18:27:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4827586206896552) internal successors, (516), 348 states have internal predecessors, (516), 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) [2022-07-13 18:27:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 516 transitions. [2022-07-13 18:27:29,763 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 516 transitions. Word has length 105 [2022-07-13 18:27:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:29,765 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 516 transitions. [2022-07-13 18:27:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 516 transitions. [2022-07-13 18:27:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:27:29,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:29,767 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] [2022-07-13 18:27:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:27:29,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -903931587, now seen corresponding path program 1 times [2022-07-13 18:27:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:29,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583991133] [2022-07-13 18:27:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583991133] [2022-07-13 18:27:29,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583991133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:29,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:29,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535181044] [2022-07-13 18:27:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:29,859 INFO L87 Difference]: Start difference. First operand 349 states and 516 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:29,897 INFO L93 Difference]: Finished difference Result 889 states and 1374 transitions. [2022-07-13 18:27:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 18:27:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:29,901 INFO L225 Difference]: With dead ends: 889 [2022-07-13 18:27:29,901 INFO L226 Difference]: Without dead ends: 607 [2022-07-13 18:27:29,903 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 [2022-07-13 18:27:29,904 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 94 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 391 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 [2022-07-13 18:27:29,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 391 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-07-13 18:27:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 605. [2022-07-13 18:27:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.5231788079470199) internal successors, (920), 604 states have internal predecessors, (920), 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) [2022-07-13 18:27:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 920 transitions. [2022-07-13 18:27:29,941 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 920 transitions. Word has length 105 [2022-07-13 18:27:29,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:29,941 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 920 transitions. [2022-07-13 18:27:29,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 920 transitions. [2022-07-13 18:27:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:27:29,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:29,943 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] [2022-07-13 18:27:29,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:27:29,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1796751027, now seen corresponding path program 1 times [2022-07-13 18:27:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:29,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622382075] [2022-07-13 18:27:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:29,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:30,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:30,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622382075] [2022-07-13 18:27:30,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622382075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:30,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:30,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723080203] [2022-07-13 18:27:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:30,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:30,070 INFO L87 Difference]: Start difference. First operand 605 states and 920 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:30,122 INFO L93 Difference]: Finished difference Result 1633 states and 2546 transitions. [2022-07-13 18:27:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:30,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 18:27:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:30,131 INFO L225 Difference]: With dead ends: 1633 [2022-07-13 18:27:30,131 INFO L226 Difference]: Without dead ends: 1095 [2022-07-13 18:27:30,133 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 [2022-07-13 18:27:30,134 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 90 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 390 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 [2022-07-13 18:27:30,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 390 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-07-13 18:27:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1093. [2022-07-13 18:27:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.5421245421245422) internal successors, (1684), 1092 states have internal predecessors, (1684), 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) [2022-07-13 18:27:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1684 transitions. [2022-07-13 18:27:30,193 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1684 transitions. Word has length 105 [2022-07-13 18:27:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:30,193 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1684 transitions. [2022-07-13 18:27:30,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:30,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1684 transitions. [2022-07-13 18:27:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:27:30,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:30,195 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] [2022-07-13 18:27:30,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:27:30,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:30,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2134544169, now seen corresponding path program 1 times [2022-07-13 18:27:30,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:30,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845212473] [2022-07-13 18:27:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:30,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:30,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:30,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845212473] [2022-07-13 18:27:30,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845212473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:30,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:30,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230072833] [2022-07-13 18:27:30,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:30,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:30,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:30,266 INFO L87 Difference]: Start difference. First operand 1093 states and 1684 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:30,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:30,331 INFO L93 Difference]: Finished difference Result 3049 states and 4758 transitions. [2022-07-13 18:27:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2022-07-13 18:27:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:30,342 INFO L225 Difference]: With dead ends: 3049 [2022-07-13 18:27:30,342 INFO L226 Difference]: Without dead ends: 2023 [2022-07-13 18:27:30,344 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 [2022-07-13 18:27:30,347 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 86 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 389 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 [2022-07-13 18:27:30,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 389 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-07-13 18:27:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2021. [2022-07-13 18:27:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2020 states have (on average 1.5465346534653466) internal successors, (3124), 2020 states have internal predecessors, (3124), 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) [2022-07-13 18:27:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 3124 transitions. [2022-07-13 18:27:30,430 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 3124 transitions. Word has length 105 [2022-07-13 18:27:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:30,431 INFO L495 AbstractCegarLoop]: Abstraction has 2021 states and 3124 transitions. [2022-07-13 18:27:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-07-13 18:27:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 3124 transitions. [2022-07-13 18:27:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:27:30,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:30,433 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] [2022-07-13 18:27:30,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:27:30,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash -942437729, now seen corresponding path program 1 times [2022-07-13 18:27:30,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:30,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032875377] [2022-07-13 18:27:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:30,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:30,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:30,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032875377] [2022-07-13 18:27:30,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032875377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:30,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:30,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:27:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499582863] [2022-07-13 18:27:30,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:30,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:27:30,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:27:30,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:27:30,603 INFO L87 Difference]: Start difference. First operand 2021 states and 3124 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2022-07-13 18:27:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:32,232 INFO L93 Difference]: Finished difference Result 33285 states and 52036 transitions. [2022-07-13 18:27:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 18:27:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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 105 [2022-07-13 18:27:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:32,352 INFO L225 Difference]: With dead ends: 33285 [2022-07-13 18:27:32,352 INFO L226 Difference]: Without dead ends: 31331 [2022-07-13 18:27:32,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:27:32,371 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 3366 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:32,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 3298 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:27:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31331 states. [2022-07-13 18:27:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31331 to 3973. [2022-07-13 18:27:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3973 states, 3972 states have (on average 1.539778449144008) internal successors, (6116), 3972 states have internal predecessors, (6116), 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) [2022-07-13 18:27:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3973 states to 3973 states and 6116 transitions. [2022-07-13 18:27:32,973 INFO L78 Accepts]: Start accepts. Automaton has 3973 states and 6116 transitions. Word has length 105 [2022-07-13 18:27:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:32,973 INFO L495 AbstractCegarLoop]: Abstraction has 3973 states and 6116 transitions. [2022-07-13 18:27:32,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2022-07-13 18:27:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3973 states and 6116 transitions. [2022-07-13 18:27:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 18:27:32,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:32,975 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] [2022-07-13 18:27:32,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:27:32,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -860244721, now seen corresponding path program 1 times [2022-07-13 18:27:32,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:32,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920105858] [2022-07-13 18:27:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:33,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:33,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920105858] [2022-07-13 18:27:33,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920105858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:33,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:33,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166413237] [2022-07-13 18:27:33,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:33,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:33,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:33,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:33,050 INFO L87 Difference]: Start difference. First operand 3973 states and 6116 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:33,647 INFO L93 Difference]: Finished difference Result 11433 states and 17606 transitions. [2022-07-13 18:27:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-13 18:27:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:33,665 INFO L225 Difference]: With dead ends: 11433 [2022-07-13 18:27:33,665 INFO L226 Difference]: Without dead ends: 7527 [2022-07-13 18:27:33,670 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 [2022-07-13 18:27:33,672 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 77 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:33,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 304 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7527 states. [2022-07-13 18:27:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7527 to 7461. [2022-07-13 18:27:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 7460 states have (on average 1.5190348525469168) internal successors, (11332), 7460 states have internal predecessors, (11332), 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) [2022-07-13 18:27:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 11332 transitions. [2022-07-13 18:27:34,223 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 11332 transitions. Word has length 107 [2022-07-13 18:27:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:34,224 INFO L495 AbstractCegarLoop]: Abstraction has 7461 states and 11332 transitions. [2022-07-13 18:27:34,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 11332 transitions. [2022-07-13 18:27:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 18:27:34,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:34,225 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] [2022-07-13 18:27:34,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:27:34,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash -793751209, now seen corresponding path program 1 times [2022-07-13 18:27:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:34,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695503755] [2022-07-13 18:27:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:34,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:34,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:34,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695503755] [2022-07-13 18:27:34,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695503755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:34,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:34,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:27:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543071361] [2022-07-13 18:27:34,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:34,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:27:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:27:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:27:34,542 INFO L87 Difference]: Start difference. First operand 7461 states and 11332 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:35,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:35,615 INFO L93 Difference]: Finished difference Result 14857 states and 22598 transitions. [2022-07-13 18:27:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:27:35,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-13 18:27:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:35,663 INFO L225 Difference]: With dead ends: 14857 [2022-07-13 18:27:35,664 INFO L226 Difference]: Without dead ends: 7463 [2022-07-13 18:27:35,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:27:35,672 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 652 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:35,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1208 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2022-07-13 18:27:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 7461. [2022-07-13 18:27:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 7460 states have (on average 1.510455764075067) internal successors, (11268), 7460 states have internal predecessors, (11268), 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) [2022-07-13 18:27:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 11268 transitions. [2022-07-13 18:27:36,197 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 11268 transitions. Word has length 107 [2022-07-13 18:27:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:36,198 INFO L495 AbstractCegarLoop]: Abstraction has 7461 states and 11268 transitions. [2022-07-13 18:27:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 11268 transitions. [2022-07-13 18:27:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 18:27:36,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:36,199 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] [2022-07-13 18:27:36,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:27:36,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:36,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:36,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1539759597, now seen corresponding path program 1 times [2022-07-13 18:27:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:36,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270610838] [2022-07-13 18:27:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:36,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:36,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:36,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270610838] [2022-07-13 18:27:36,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270610838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:36,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:36,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826306750] [2022-07-13 18:27:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:36,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:36,263 INFO L87 Difference]: Start difference. First operand 7461 states and 11268 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:37,062 INFO L93 Difference]: Finished difference Result 21481 states and 32390 transitions. [2022-07-13 18:27:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:37,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-13 18:27:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:37,089 INFO L225 Difference]: With dead ends: 21481 [2022-07-13 18:27:37,090 INFO L226 Difference]: Without dead ends: 14087 [2022-07-13 18:27:37,100 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 [2022-07-13 18:27:37,101 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 106 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 403 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 [2022-07-13 18:27:37,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 403 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14087 states. [2022-07-13 18:27:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14087 to 14085. [2022-07-13 18:27:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14085 states, 14084 states have (on average 1.4953138312979268) internal successors, (21060), 14084 states have internal predecessors, (21060), 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) [2022-07-13 18:27:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14085 states to 14085 states and 21060 transitions. [2022-07-13 18:27:38,140 INFO L78 Accepts]: Start accepts. Automaton has 14085 states and 21060 transitions. Word has length 107 [2022-07-13 18:27:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:38,140 INFO L495 AbstractCegarLoop]: Abstraction has 14085 states and 21060 transitions. [2022-07-13 18:27:38,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14085 states and 21060 transitions. [2022-07-13 18:27:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 18:27:38,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:38,142 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] [2022-07-13 18:27:38,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:27:38,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1642858163, now seen corresponding path program 1 times [2022-07-13 18:27:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:38,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989476763] [2022-07-13 18:27:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:38,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:38,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989476763] [2022-07-13 18:27:38,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989476763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:38,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:38,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:38,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993645504] [2022-07-13 18:27:38,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:38,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:38,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:38,222 INFO L87 Difference]: Start difference. First operand 14085 states and 21060 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:39,686 INFO L93 Difference]: Finished difference Result 40585 states and 60486 transitions. [2022-07-13 18:27:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-13 18:27:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:39,743 INFO L225 Difference]: With dead ends: 40585 [2022-07-13 18:27:39,743 INFO L226 Difference]: Without dead ends: 26567 [2022-07-13 18:27:39,763 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 [2022-07-13 18:27:39,764 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 110 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 412 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 [2022-07-13 18:27:39,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26567 states. [2022-07-13 18:27:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26567 to 26565. [2022-07-13 18:27:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26565 states, 26564 states have (on average 1.4770365908748682) internal successors, (39236), 26564 states have internal predecessors, (39236), 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) [2022-07-13 18:27:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26565 states to 26565 states and 39236 transitions. [2022-07-13 18:27:41,682 INFO L78 Accepts]: Start accepts. Automaton has 26565 states and 39236 transitions. Word has length 107 [2022-07-13 18:27:41,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:41,683 INFO L495 AbstractCegarLoop]: Abstraction has 26565 states and 39236 transitions. [2022-07-13 18:27:41,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 26565 states and 39236 transitions. [2022-07-13 18:27:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 18:27:41,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:41,685 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] [2022-07-13 18:27:41,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:27:41,685 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:41,686 INFO L85 PathProgramCache]: Analyzing trace with hash 748793536, now seen corresponding path program 1 times [2022-07-13 18:27:41,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:41,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560496076] [2022-07-13 18:27:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:41,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:41,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560496076] [2022-07-13 18:27:41,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560496076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:41,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:41,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:27:41,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536669125] [2022-07-13 18:27:41,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:41,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:27:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:27:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:27:41,801 INFO L87 Difference]: Start difference. First operand 26565 states and 39236 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:44,910 INFO L93 Difference]: Finished difference Result 46191 states and 67897 transitions. [2022-07-13 18:27:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:27:44,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-13 18:27:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:44,984 INFO L225 Difference]: With dead ends: 46191 [2022-07-13 18:27:44,984 INFO L226 Difference]: Without dead ends: 46189 [2022-07-13 18:27:45,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:27:45,002 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 903 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:45,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1001 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46189 states. [2022-07-13 18:27:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46189 to 27333. [2022-07-13 18:27:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27333 states, 27332 states have (on average 1.4589492170349774) internal successors, (39876), 27332 states have internal predecessors, (39876), 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) [2022-07-13 18:27:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27333 states to 27333 states and 39876 transitions. [2022-07-13 18:27:47,428 INFO L78 Accepts]: Start accepts. Automaton has 27333 states and 39876 transitions. Word has length 108 [2022-07-13 18:27:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:47,429 INFO L495 AbstractCegarLoop]: Abstraction has 27333 states and 39876 transitions. [2022-07-13 18:27:47,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 27333 states and 39876 transitions. [2022-07-13 18:27:47,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 18:27:47,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:47,431 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] [2022-07-13 18:27:47,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:27:47,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1878838190, now seen corresponding path program 1 times [2022-07-13 18:27:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:47,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405688851] [2022-07-13 18:27:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:47,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:27:47,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:47,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405688851] [2022-07-13 18:27:47,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405688851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:47,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:47,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319754507] [2022-07-13 18:27:47,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:47,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:47,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:47,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:47,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:47,492 INFO L87 Difference]: Start difference. First operand 27333 states and 39876 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:50,589 INFO L93 Difference]: Finished difference Result 54988 states and 80586 transitions. [2022-07-13 18:27:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:50,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-13 18:27:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:50,654 INFO L225 Difference]: With dead ends: 54988 [2022-07-13 18:27:50,654 INFO L226 Difference]: Without dead ends: 40137 [2022-07-13 18:27:50,692 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 [2022-07-13 18:27:50,693 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 111 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 416 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 [2022-07-13 18:27:50,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 416 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40137 states. [2022-07-13 18:27:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40137 to 40135. [2022-07-13 18:27:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40135 states, 40134 states have (on average 1.4528828424776996) internal successors, (58310), 40134 states have internal predecessors, (58310), 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) [2022-07-13 18:27:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40135 states to 40135 states and 58310 transitions. [2022-07-13 18:27:53,901 INFO L78 Accepts]: Start accepts. Automaton has 40135 states and 58310 transitions. Word has length 109 [2022-07-13 18:27:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:53,901 INFO L495 AbstractCegarLoop]: Abstraction has 40135 states and 58310 transitions. [2022-07-13 18:27:53,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 40135 states and 58310 transitions. [2022-07-13 18:27:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 18:27:53,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:53,925 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:53,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:27:53,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2146990555, now seen corresponding path program 1 times [2022-07-13 18:27:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:53,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321141406] [2022-07-13 18:27:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:53,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 18:27:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:54,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321141406] [2022-07-13 18:27:54,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321141406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:54,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:54,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 18:27:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608941473] [2022-07-13 18:27:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:54,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 18:27:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 18:27:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 18:27:54,077 INFO L87 Difference]: Start difference. First operand 40135 states and 58310 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 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)