./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.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 5aad5fd4611705ad6fdf71db638f2162c13b3da201193a54a746a0dc7cc3072f --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:07:49,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:07:49,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:07:49,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:07:49,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:07:49,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:07:49,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:07:49,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:07:49,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:07:49,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:07:49,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:07:49,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:07:49,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:07:49,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:07:49,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:07:49,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:07:49,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:07:49,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:07:49,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:07:49,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:07:49,895 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:07:49,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:07:49,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:07:49,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:07:49,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:07:49,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:07:49,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:07:49,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:07:49,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:07:49,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:07:49,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:07:49,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:07:49,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:07:49,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:07:49,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:07:49,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:07:49,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:07:49,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:07:49,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:07:49,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:07:49,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:07:49,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:07:49,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:07:49,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:07:49,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:07:49,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:07:49,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:07:49,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:07:49,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:07:49,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:07:49,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:07:49,948 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:07:49,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:07:49,949 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:07:49,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:07:49,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:07:49,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:07:49,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:07:49,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:07:49,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:07:49,951 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:07:49,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:07:49,951 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:07:49,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:07:49,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:07:49,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:07:49,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:07:49,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:07:49,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:07:49,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:07:49,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:07:49,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:07:49,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:07:49,954 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:07:49,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:07:49,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:07:49,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5aad5fd4611705ad6fdf71db638f2162c13b3da201193a54a746a0dc7cc3072f [2022-07-12 07:07:50,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:07:50,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:07:50,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:07:50,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:07:50,196 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:07:50,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-12 07:07:50,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4daf9e436/860e8c190d4a4cce91063cbfeab035a9/FLAGf8bf31527 [2022-07-12 07:07:50,648 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:07:50,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-12 07:07:50,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4daf9e436/860e8c190d4a4cce91063cbfeab035a9/FLAGf8bf31527 [2022-07-12 07:07:51,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4daf9e436/860e8c190d4a4cce91063cbfeab035a9 [2022-07-12 07:07:51,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:07:51,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:07:51,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:07:51,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:07:51,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:07:51,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29dae08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51, skipping insertion in model container [2022-07-12 07:07:51,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:07:51,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:07:51,291 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-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7251,7264] [2022-07-12 07:07:51,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:07:51,353 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:07:51,427 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-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7251,7264] [2022-07-12 07:07:51,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:07:51,492 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:07:51,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51 WrapperNode [2022-07-12 07:07:51,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:07:51,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:07:51,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:07:51,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:07:51,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,551 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 673 [2022-07-12 07:07:51,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:07:51,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:07:51,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:07:51,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:07:51,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:07:51,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:07:51,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:07:51,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:07:51,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (1/1) ... [2022-07-12 07:07:51,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:07:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:07:51,627 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) [2022-07-12 07:07:51,628 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 [2022-07-12 07:07:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:07:51,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:07:51,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:07:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:07:51,740 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:07:51,741 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:07:52,254 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:07:52,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:07:52,261 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:07:52,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:07:52 BoogieIcfgContainer [2022-07-12 07:07:52,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:07:52,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:07:52,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:07:52,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:07:52,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:07:51" (1/3) ... [2022-07-12 07:07:52,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbf194d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:07:52, skipping insertion in model container [2022-07-12 07:07:52,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:07:51" (2/3) ... [2022-07-12 07:07:52,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbf194d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:07:52, skipping insertion in model container [2022-07-12 07:07:52,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:07:52" (3/3) ... [2022-07-12 07:07:52,275 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-12 07:07:52,289 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:07:52,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:07:52,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:07:52,356 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@901dcf9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@570018e8 [2022-07-12 07:07:52,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:07:52,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 07:07:52,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:52,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:52,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1338980314, now seen corresponding path program 1 times [2022-07-12 07:07:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:52,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619721244] [2022-07-12 07:07:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:52,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619721244] [2022-07-12 07:07:52,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619721244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:52,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:52,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:07:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463207830] [2022-07-12 07:07:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:52,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:07:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:07:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:07:52,832 INFO L87 Difference]: Start difference. First operand has 180 states, 178 states have (on average 1.7191011235955056) internal successors, (306), 179 states have internal predecessors, (306), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:53,102 INFO L93 Difference]: Finished difference Result 640 states and 1036 transitions. [2022-07-12 07:07:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:07:53,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 07:07:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:53,121 INFO L225 Difference]: With dead ends: 640 [2022-07-12 07:07:53,121 INFO L226 Difference]: Without dead ends: 541 [2022-07-12 07:07:53,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:07:53,126 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1605 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:53,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1129 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:07:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-12 07:07:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 275. [2022-07-12 07:07:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5036496350364963) internal successors, (412), 274 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 412 transitions. [2022-07-12 07:07:53,196 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 412 transitions. Word has length 65 [2022-07-12 07:07:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:53,197 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 412 transitions. [2022-07-12 07:07:53,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 412 transitions. [2022-07-12 07:07:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:07:53,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:53,199 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] [2022-07-12 07:07:53,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:07:53,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1162317624, now seen corresponding path program 1 times [2022-07-12 07:07:53,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:53,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171246340] [2022-07-12 07:07:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:53,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:53,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171246340] [2022-07-12 07:07:53,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171246340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:53,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:53,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:07:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41563807] [2022-07-12 07:07:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:53,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:07:53,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:53,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:07:53,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:07:53,382 INFO L87 Difference]: Start difference. First operand 275 states and 412 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:53,628 INFO L93 Difference]: Finished difference Result 1013 states and 1556 transitions. [2022-07-12 07:07:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:07:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 07:07:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:53,633 INFO L225 Difference]: With dead ends: 1013 [2022-07-12 07:07:53,633 INFO L226 Difference]: Without dead ends: 801 [2022-07-12 07:07:53,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:07:53,636 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 778 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:53,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 895 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:07:53,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-07-12 07:07:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 795. [2022-07-12 07:07:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.5251889168765742) internal successors, (1211), 794 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1211 transitions. [2022-07-12 07:07:53,738 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1211 transitions. Word has length 66 [2022-07-12 07:07:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1211 transitions. [2022-07-12 07:07:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1211 transitions. [2022-07-12 07:07:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:07:53,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:53,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:53,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:07:53,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:53,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash -314049844, now seen corresponding path program 1 times [2022-07-12 07:07:53,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:53,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933904509] [2022-07-12 07:07:53,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:53,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:53,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933904509] [2022-07-12 07:07:53,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933904509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:53,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:53,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:07:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503152867] [2022-07-12 07:07:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:53,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:07:53,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:07:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:07:53,867 INFO L87 Difference]: Start difference. First operand 795 states and 1211 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:54,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:54,200 INFO L93 Difference]: Finished difference Result 2127 states and 3281 transitions. [2022-07-12 07:07:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:07:54,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:07:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:54,209 INFO L225 Difference]: With dead ends: 2127 [2022-07-12 07:07:54,209 INFO L226 Difference]: Without dead ends: 1383 [2022-07-12 07:07:54,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:07:54,220 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 994 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:54,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 244 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:07:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-07-12 07:07:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1381. [2022-07-12 07:07:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1380 states have (on average 1.5333333333333334) internal successors, (2116), 1380 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2116 transitions. [2022-07-12 07:07:54,364 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2116 transitions. Word has length 67 [2022-07-12 07:07:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:54,365 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 2116 transitions. [2022-07-12 07:07:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2116 transitions. [2022-07-12 07:07:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:07:54,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:54,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:54,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:07:54,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash -301249106, now seen corresponding path program 1 times [2022-07-12 07:07:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:54,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028707223] [2022-07-12 07:07:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:54,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028707223] [2022-07-12 07:07:54,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028707223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:54,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:54,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:07:54,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383664016] [2022-07-12 07:07:54,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:54,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:07:54,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:07:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:07:54,488 INFO L87 Difference]: Start difference. First operand 1381 states and 2116 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:54,897 INFO L93 Difference]: Finished difference Result 3713 states and 5742 transitions. [2022-07-12 07:07:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:07:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:07:54,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:54,908 INFO L225 Difference]: With dead ends: 3713 [2022-07-12 07:07:54,909 INFO L226 Difference]: Without dead ends: 2433 [2022-07-12 07:07:54,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:07:54,921 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 920 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:54,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 250 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:07:54,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-07-12 07:07:55,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2431. [2022-07-12 07:07:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2430 states have (on average 1.536625514403292) internal successors, (3734), 2430 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3734 transitions. [2022-07-12 07:07:55,185 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3734 transitions. Word has length 67 [2022-07-12 07:07:55,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:55,187 INFO L495 AbstractCegarLoop]: Abstraction has 2431 states and 3734 transitions. [2022-07-12 07:07:55,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:55,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3734 transitions. [2022-07-12 07:07:55,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:07:55,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:55,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:07:55,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1722644829, now seen corresponding path program 1 times [2022-07-12 07:07:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:55,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217569013] [2022-07-12 07:07:55,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:55,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:55,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217569013] [2022-07-12 07:07:55,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217569013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:55,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:55,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:07:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522515940] [2022-07-12 07:07:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:55,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:07:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:07:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:07:55,306 INFO L87 Difference]: Start difference. First operand 2431 states and 3734 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:55,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:55,875 INFO L93 Difference]: Finished difference Result 6934 states and 10705 transitions. [2022-07-12 07:07:55,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:07:55,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:07:55,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:55,893 INFO L225 Difference]: With dead ends: 6934 [2022-07-12 07:07:55,893 INFO L226 Difference]: Without dead ends: 4577 [2022-07-12 07:07:55,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:07:55,897 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 946 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:55,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 248 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:07:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2022-07-12 07:07:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4575. [2022-07-12 07:07:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4575 states, 4574 states have (on average 1.5343244425010931) internal successors, (7018), 4574 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 7018 transitions. [2022-07-12 07:07:56,320 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 7018 transitions. Word has length 67 [2022-07-12 07:07:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:56,320 INFO L495 AbstractCegarLoop]: Abstraction has 4575 states and 7018 transitions. [2022-07-12 07:07:56,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 7018 transitions. [2022-07-12 07:07:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:07:56,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:56,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:07:56,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -262843909, now seen corresponding path program 1 times [2022-07-12 07:07:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:56,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355408769] [2022-07-12 07:07:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:56,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:56,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355408769] [2022-07-12 07:07:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355408769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:07:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099417929] [2022-07-12 07:07:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:07:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:07:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:07:56,403 INFO L87 Difference]: Start difference. First operand 4575 states and 7018 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:57,330 INFO L93 Difference]: Finished difference Result 12541 states and 19291 transitions. [2022-07-12 07:07:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:07:57,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:07:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:57,362 INFO L225 Difference]: With dead ends: 12541 [2022-07-12 07:07:57,362 INFO L226 Difference]: Without dead ends: 8001 [2022-07-12 07:07:57,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:07:57,372 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1008 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:57,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 242 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:07:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2022-07-12 07:07:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 7999. [2022-07-12 07:07:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7999 states, 7998 states have (on average 1.5250062515628908) internal successors, (12197), 7998 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7999 states to 7999 states and 12197 transitions. [2022-07-12 07:07:58,079 INFO L78 Accepts]: Start accepts. Automaton has 7999 states and 12197 transitions. Word has length 67 [2022-07-12 07:07:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:58,080 INFO L495 AbstractCegarLoop]: Abstraction has 7999 states and 12197 transitions. [2022-07-12 07:07:58,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 7999 states and 12197 transitions. [2022-07-12 07:07:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:07:58,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:58,082 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] [2022-07-12 07:07:58,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:07:58,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash -767077788, now seen corresponding path program 1 times [2022-07-12 07:07:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:58,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111629952] [2022-07-12 07:07:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:58,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111629952] [2022-07-12 07:07:58,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111629952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:58,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:58,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:07:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463124661] [2022-07-12 07:07:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:07:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:07:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:07:58,180 INFO L87 Difference]: Start difference. First operand 7999 states and 12197 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:07:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:59,468 INFO L93 Difference]: Finished difference Result 15649 states and 23806 transitions. [2022-07-12 07:07:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:07:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-12 07:07:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:59,512 INFO L225 Difference]: With dead ends: 15649 [2022-07-12 07:07:59,512 INFO L226 Difference]: Without dead ends: 15647 [2022-07-12 07:07:59,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:07:59,519 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 244 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:59,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:07:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15647 states. [2022-07-12 07:08:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15647 to 8223. [2022-07-12 07:08:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 8222 states have (on average 1.510702991972756) internal successors, (12421), 8222 states have internal predecessors, (12421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 12421 transitions. [2022-07-12 07:08:00,238 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 12421 transitions. Word has length 68 [2022-07-12 07:08:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:00,239 INFO L495 AbstractCegarLoop]: Abstraction has 8223 states and 12421 transitions. [2022-07-12 07:08:00,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 12421 transitions. [2022-07-12 07:08:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:08:00,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:00,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:08:00,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2026121149, now seen corresponding path program 1 times [2022-07-12 07:08:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:00,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366015074] [2022-07-12 07:08:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:00,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:00,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366015074] [2022-07-12 07:08:00,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366015074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:00,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:00,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:08:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502597397] [2022-07-12 07:08:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:08:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:08:00,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:08:00,400 INFO L87 Difference]: Start difference. First operand 8223 states and 12421 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:04,241 INFO L93 Difference]: Finished difference Result 39234 states and 58790 transitions. [2022-07-12 07:08:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 07:08:04,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:08:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:04,328 INFO L225 Difference]: With dead ends: 39234 [2022-07-12 07:08:04,328 INFO L226 Difference]: Without dead ends: 33420 [2022-07-12 07:08:04,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:08:04,351 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 2611 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:04,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2611 Valid, 1140 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 07:08:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33420 states. [2022-07-12 07:08:05,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33420 to 8356. [2022-07-12 07:08:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8356 states, 8355 states have (on average 1.5076002393776182) internal successors, (12596), 8355 states have internal predecessors, (12596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 12596 transitions. [2022-07-12 07:08:05,397 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 12596 transitions. Word has length 69 [2022-07-12 07:08:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:05,397 INFO L495 AbstractCegarLoop]: Abstraction has 8356 states and 12596 transitions. [2022-07-12 07:08:05,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 12596 transitions. [2022-07-12 07:08:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:08:05,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:05,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:05,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:08:05,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:05,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1463216125, now seen corresponding path program 1 times [2022-07-12 07:08:05,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:05,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756972113] [2022-07-12 07:08:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:05,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:05,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756972113] [2022-07-12 07:08:05,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756972113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:05,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:05,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:08:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004374136] [2022-07-12 07:08:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:05,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:08:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:08:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:08:05,468 INFO L87 Difference]: Start difference. First operand 8356 states and 12596 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:07,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:07,149 INFO L93 Difference]: Finished difference Result 22416 states and 33774 transitions. [2022-07-12 07:08:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:08:07,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:08:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:07,181 INFO L225 Difference]: With dead ends: 22416 [2022-07-12 07:08:07,181 INFO L226 Difference]: Without dead ends: 14766 [2022-07-12 07:08:07,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:08:07,199 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 248 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:07,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 610 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14766 states. [2022-07-12 07:08:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14766 to 14764. [2022-07-12 07:08:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14764 states, 14763 states have (on average 1.4942762311183364) internal successors, (22060), 14763 states have internal predecessors, (22060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14764 states to 14764 states and 22060 transitions. [2022-07-12 07:08:08,766 INFO L78 Accepts]: Start accepts. Automaton has 14764 states and 22060 transitions. Word has length 69 [2022-07-12 07:08:08,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:08,767 INFO L495 AbstractCegarLoop]: Abstraction has 14764 states and 22060 transitions. [2022-07-12 07:08:08,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 14764 states and 22060 transitions. [2022-07-12 07:08:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:08:08,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:08,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:08:08,771 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -304742627, now seen corresponding path program 1 times [2022-07-12 07:08:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:08,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483043941] [2022-07-12 07:08:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:08,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:08,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:08,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483043941] [2022-07-12 07:08:08,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483043941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:08,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:08,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086214022] [2022-07-12 07:08:08,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:08,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:08,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:08,805 INFO L87 Difference]: Start difference. First operand 14764 states and 22060 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:10,481 INFO L93 Difference]: Finished difference Result 27434 states and 40981 transitions. [2022-07-12 07:08:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:10,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:08:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:10,517 INFO L225 Difference]: With dead ends: 27434 [2022-07-12 07:08:10,517 INFO L226 Difference]: Without dead ends: 18404 [2022-07-12 07:08:10,540 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 [2022-07-12 07:08:10,541 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 155 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:10,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-07-12 07:08:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 18186. [2022-07-12 07:08:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18186 states, 18185 states have (on average 1.4720373934561453) internal successors, (26769), 18185 states have internal predecessors, (26769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18186 states to 18186 states and 26769 transitions. [2022-07-12 07:08:12,254 INFO L78 Accepts]: Start accepts. Automaton has 18186 states and 26769 transitions. Word has length 70 [2022-07-12 07:08:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:12,254 INFO L495 AbstractCegarLoop]: Abstraction has 18186 states and 26769 transitions. [2022-07-12 07:08:12,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 18186 states and 26769 transitions. [2022-07-12 07:08:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:08:12,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:12,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:12,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:08:12,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1753930236, now seen corresponding path program 1 times [2022-07-12 07:08:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:12,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852312696] [2022-07-12 07:08:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:12,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:12,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852312696] [2022-07-12 07:08:12,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852312696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:12,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:12,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:08:12,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90485723] [2022-07-12 07:08:12,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:12,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:08:12,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:12,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:08:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:12,325 INFO L87 Difference]: Start difference. First operand 18186 states and 26769 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:15,408 INFO L93 Difference]: Finished difference Result 35144 states and 51914 transitions. [2022-07-12 07:08:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:08:15,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:08:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:15,463 INFO L225 Difference]: With dead ends: 35144 [2022-07-12 07:08:15,464 INFO L226 Difference]: Without dead ends: 31926 [2022-07-12 07:08:15,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:08:15,481 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1055 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:15,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1160 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31926 states. [2022-07-12 07:08:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31926 to 21364. [2022-07-12 07:08:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21364 states, 21363 states have (on average 1.4699714459579647) internal successors, (31403), 21363 states have internal predecessors, (31403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21364 states to 21364 states and 31403 transitions. [2022-07-12 07:08:17,617 INFO L78 Accepts]: Start accepts. Automaton has 21364 states and 31403 transitions. Word has length 70 [2022-07-12 07:08:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:17,617 INFO L495 AbstractCegarLoop]: Abstraction has 21364 states and 31403 transitions. [2022-07-12 07:08:17,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 21364 states and 31403 transitions. [2022-07-12 07:08:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:08:17,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:17,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:17,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:08:17,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:17,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 314737884, now seen corresponding path program 1 times [2022-07-12 07:08:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:17,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246752644] [2022-07-12 07:08:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:17,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:17,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246752644] [2022-07-12 07:08:17,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246752644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:17,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:17,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:17,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697221522] [2022-07-12 07:08:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:17,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:17,656 INFO L87 Difference]: Start difference. First operand 21364 states and 31403 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:20,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:20,587 INFO L93 Difference]: Finished difference Result 45706 states and 67045 transitions. [2022-07-12 07:08:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:20,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:08:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:20,640 INFO L225 Difference]: With dead ends: 45706 [2022-07-12 07:08:20,640 INFO L226 Difference]: Without dead ends: 26690 [2022-07-12 07:08:20,667 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 [2022-07-12 07:08:20,667 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 162 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:20,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 495 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26690 states. [2022-07-12 07:08:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26690 to 26448. [2022-07-12 07:08:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26448 states, 26447 states have (on average 1.4400499111430407) internal successors, (38085), 26447 states have internal predecessors, (38085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26448 states to 26448 states and 38085 transitions. [2022-07-12 07:08:23,711 INFO L78 Accepts]: Start accepts. Automaton has 26448 states and 38085 transitions. Word has length 70 [2022-07-12 07:08:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:23,711 INFO L495 AbstractCegarLoop]: Abstraction has 26448 states and 38085 transitions. [2022-07-12 07:08:23,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 26448 states and 38085 transitions. [2022-07-12 07:08:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:08:23,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:23,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:08:23,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1498705795, now seen corresponding path program 1 times [2022-07-12 07:08:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:23,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205837147] [2022-07-12 07:08:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205837147] [2022-07-12 07:08:23,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205837147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:23,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:23,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260705463] [2022-07-12 07:08:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:23,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:23,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:23,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:23,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:23,751 INFO L87 Difference]: Start difference. First operand 26448 states and 38085 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:27,458 INFO L93 Difference]: Finished difference Result 58588 states and 84202 transitions. [2022-07-12 07:08:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:27,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:08:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:27,507 INFO L225 Difference]: With dead ends: 58588 [2022-07-12 07:08:27,507 INFO L226 Difference]: Without dead ends: 34400 [2022-07-12 07:08:27,527 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 [2022-07-12 07:08:27,528 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 173 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:27,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 463 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34400 states. [2022-07-12 07:08:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34400 to 34292. [2022-07-12 07:08:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34292 states, 34291 states have (on average 1.4152109883059696) internal successors, (48529), 34291 states have internal predecessors, (48529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34292 states to 34292 states and 48529 transitions. [2022-07-12 07:08:31,164 INFO L78 Accepts]: Start accepts. Automaton has 34292 states and 48529 transitions. Word has length 70 [2022-07-12 07:08:31,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:31,165 INFO L495 AbstractCegarLoop]: Abstraction has 34292 states and 48529 transitions. [2022-07-12 07:08:31,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 34292 states and 48529 transitions. [2022-07-12 07:08:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:08:31,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:31,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:31,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:08:31,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:31,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1600159939, now seen corresponding path program 1 times [2022-07-12 07:08:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:31,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481932888] [2022-07-12 07:08:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:31,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:31,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481932888] [2022-07-12 07:08:31,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481932888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:31,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:31,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:08:31,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971921167] [2022-07-12 07:08:31,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:31,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:08:31,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:08:31,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:31,231 INFO L87 Difference]: Start difference. First operand 34292 states and 48529 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:37,438 INFO L93 Difference]: Finished difference Result 66114 states and 94081 transitions. [2022-07-12 07:08:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:08:37,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:08:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:37,534 INFO L225 Difference]: With dead ends: 66114 [2022-07-12 07:08:37,534 INFO L226 Difference]: Without dead ends: 58072 [2022-07-12 07:08:37,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:08:37,550 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1035 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:37,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1383 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58072 states. [2022-07-12 07:08:42,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58072 to 42257. [2022-07-12 07:08:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42257 states, 42256 states have (on average 1.414781332828474) internal successors, (59783), 42256 states have internal predecessors, (59783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42257 states to 42257 states and 59783 transitions. [2022-07-12 07:08:42,584 INFO L78 Accepts]: Start accepts. Automaton has 42257 states and 59783 transitions. Word has length 70 [2022-07-12 07:08:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:42,584 INFO L495 AbstractCegarLoop]: Abstraction has 42257 states and 59783 transitions. [2022-07-12 07:08:42,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 42257 states and 59783 transitions. [2022-07-12 07:08:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:08:42,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:42,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:42,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:08:42,590 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:42,591 INFO L85 PathProgramCache]: Analyzing trace with hash 740233245, now seen corresponding path program 1 times [2022-07-12 07:08:42,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:42,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522123730] [2022-07-12 07:08:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:42,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:42,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522123730] [2022-07-12 07:08:42,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522123730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:42,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:42,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:08:42,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391200965] [2022-07-12 07:08:42,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:42,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:08:42,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:08:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:42,642 INFO L87 Difference]: Start difference. First operand 42257 states and 59783 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:50,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:50,274 INFO L93 Difference]: Finished difference Result 76400 states and 108734 transitions. [2022-07-12 07:08:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:08:50,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:08:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:50,376 INFO L225 Difference]: With dead ends: 76400 [2022-07-12 07:08:50,376 INFO L226 Difference]: Without dead ends: 64684 [2022-07-12 07:08:50,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:08:50,401 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1115 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:50,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1272 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64684 states. [2022-07-12 07:08:57,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64684 to 49897. [2022-07-12 07:08:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49897 states, 49896 states have (on average 1.4157647907647908) internal successors, (70641), 49896 states have internal predecessors, (70641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49897 states to 49897 states and 70641 transitions. [2022-07-12 07:08:57,422 INFO L78 Accepts]: Start accepts. Automaton has 49897 states and 70641 transitions. Word has length 70 [2022-07-12 07:08:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:57,422 INFO L495 AbstractCegarLoop]: Abstraction has 49897 states and 70641 transitions. [2022-07-12 07:08:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:08:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 49897 states and 70641 transitions. [2022-07-12 07:08:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:08:57,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:57,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:08:57,427 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1233206206, now seen corresponding path program 1 times [2022-07-12 07:08:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455326638] [2022-07-12 07:08:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:57,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:57,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455326638] [2022-07-12 07:08:57,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455326638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:57,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:57,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:08:57,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307246900] [2022-07-12 07:08:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:57,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:08:57,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:08:57,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:57,479 INFO L87 Difference]: Start difference. First operand 49897 states and 70641 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:09:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:07,056 INFO L93 Difference]: Finished difference Result 87158 states and 123938 transitions. [2022-07-12 07:09:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:09:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-12 07:09:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:07,184 INFO L225 Difference]: With dead ends: 87158 [2022-07-12 07:09:07,184 INFO L226 Difference]: Without dead ends: 75564 [2022-07-12 07:09:07,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:09:07,214 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1104 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:07,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1097 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:07,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75564 states.