./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem04_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/eca-rers2012/Problem04_label13.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 c17876257b59eca2c25bd3f1dcb6bc67a9f9778dc5124eb882a550f0dffd4015 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:50:37,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:50:37,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:50:37,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:50:37,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:50:37,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:50:37,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:50:37,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:50:37,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:50:37,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:50:37,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:50:37,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:50:37,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:50:37,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:50:37,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:50:37,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:50:37,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:50:37,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:50:37,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:50:37,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:50:37,841 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:50:37,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:50:37,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:50:37,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:50:37,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:50:37,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:50:37,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:50:37,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:50:37,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:50:37,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:50:37,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:50:37,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:50:37,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:50:37,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:50:37,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:50:37,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:50:37,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:50:37,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:50:37,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:50:37,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:50:37,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:50:37,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:50:37,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:50:37,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:50:37,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:50:37,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:50:37,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:50:37,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:50:37,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:50:37,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:50:37,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:50:37,918 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:50:37,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:50:37,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:50:37,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:50:37,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:50:37,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:50:37,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:50:37,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:50:37,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:50:37,920 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:50:37,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:50:37,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:50:37,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:50:37,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:50:37,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:50:37,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:50:37,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:50:37,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:50:37,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:50:37,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:50:37,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:50:37,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:50:37,924 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:50:37,924 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:50:37,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:50:37,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c17876257b59eca2c25bd3f1dcb6bc67a9f9778dc5124eb882a550f0dffd4015 [2022-07-20 22:50:38,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:50:38,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:50:38,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:50:38,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:50:38,303 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:50:38,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem04_label13.c [2022-07-20 22:50:38,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881b4303e/5e96afb0f1e440b2881acb88dc2dcaf1/FLAG9c6b93c56 [2022-07-20 22:50:39,090 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:50:39,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem04_label13.c [2022-07-20 22:50:39,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881b4303e/5e96afb0f1e440b2881acb88dc2dcaf1/FLAG9c6b93c56 [2022-07-20 22:50:39,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/881b4303e/5e96afb0f1e440b2881acb88dc2dcaf1 [2022-07-20 22:50:39,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:50:39,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:50:39,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:50:39,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:50:39,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:50:39,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:50:39" (1/1) ... [2022-07-20 22:50:39,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4255ab97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:39, skipping insertion in model container [2022-07-20 22:50:39,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:50:39" (1/1) ... [2022-07-20 22:50:39,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:50:39,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:50:40,401 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/eca-rers2012/Problem04_label13.c[179372,179385] [2022-07-20 22:50:40,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:50:40,425 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:50:40,905 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/eca-rers2012/Problem04_label13.c[179372,179385] [2022-07-20 22:50:40,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:50:40,939 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:50:40,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40 WrapperNode [2022-07-20 22:50:40,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:50:40,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:50:40,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:50:40,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:50:40,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,198 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5572 [2022-07-20 22:50:41,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:50:41,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:50:41,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:50:41,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:50:41,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:50:41,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:50:41,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:50:41,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:50:41,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (1/1) ... [2022-07-20 22:50:41,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:50:41,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:50:41,472 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) [2022-07-20 22:50:41,487 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 [2022-07-20 22:50:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:50:41,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:50:41,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:50:41,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:50:41,604 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:50:41,605 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:50:44,934 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:50:44,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:50:44,956 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:50:44,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:50:44 BoogieIcfgContainer [2022-07-20 22:50:44,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:50:44,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:50:44,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:50:44,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:50:44,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:50:39" (1/3) ... [2022-07-20 22:50:44,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bdaebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:50:44, skipping insertion in model container [2022-07-20 22:50:44,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:50:40" (2/3) ... [2022-07-20 22:50:44,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39bdaebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:50:44, skipping insertion in model container [2022-07-20 22:50:44,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:50:44" (3/3) ... [2022-07-20 22:50:44,968 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label13.c [2022-07-20 22:50:44,981 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:50:44,982 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:50:45,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:50:45,066 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@46882861, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5fdc2c49 [2022-07-20 22:50:45,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:50:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:50:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2022-07-20 22:50:45,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:50:45,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:50:45,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:50:45,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:50:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1550847883, now seen corresponding path program 1 times [2022-07-20 22:50:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:50:45,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065230023] [2022-07-20 22:50:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:50:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:50:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:50:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:50:47,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:50:47,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065230023] [2022-07-20 22:50:47,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065230023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:50:47,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:50:47,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-20 22:50:47,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739344293] [2022-07-20 22:50:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:50:47,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 22:50:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:50:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 22:50:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-20 22:50:47,192 INFO L87 Difference]: Start difference. First operand has 885 states, 883 states have (on average 1.9229898074745186) internal successors, (1698), 884 states have internal predecessors, (1698), 0 states have call successors, (0), 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 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:50:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:50:52,573 INFO L93 Difference]: Finished difference Result 2490 states and 4835 transitions. [2022-07-20 22:50:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 22:50:52,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 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 778 [2022-07-20 22:50:52,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:50:52,597 INFO L225 Difference]: With dead ends: 2490 [2022-07-20 22:50:52,598 INFO L226 Difference]: Without dead ends: 1541 [2022-07-20 22:50:52,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-07-20 22:50:52,606 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 2108 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 7237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 6526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:50:52,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 964 Invalid, 7237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-20 22:50:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2022-07-20 22:50:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1541. [2022-07-20 22:50:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.490909090909091) internal successors, (2296), 1540 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:50:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2296 transitions. [2022-07-20 22:50:52,742 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2296 transitions. Word has length 778 [2022-07-20 22:50:52,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:50:52,749 INFO L495 AbstractCegarLoop]: Abstraction has 1541 states and 2296 transitions. [2022-07-20 22:50:52,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:50:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2296 transitions. [2022-07-20 22:50:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2022-07-20 22:50:52,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:50:52,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:50:52,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:50:52,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:50:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:50:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -369734506, now seen corresponding path program 1 times [2022-07-20 22:50:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:50:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429976024] [2022-07-20 22:50:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:50:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:50:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:50:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:50:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:50:54,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429976024] [2022-07-20 22:50:54,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429976024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:50:54,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:50:54,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 22:50:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874557060] [2022-07-20 22:50:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:50:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 22:50:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:50:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 22:50:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-20 22:50:54,110 INFO L87 Difference]: Start difference. First operand 1541 states and 2296 transitions. Second operand has 13 states, 13 states have (on average 61.0) internal successors, (793), 12 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:00,677 INFO L93 Difference]: Finished difference Result 3865 states and 6804 transitions. [2022-07-20 22:51:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 22:51:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 61.0) internal successors, (793), 12 states have internal predecessors, (793), 0 states have call successors, (0), 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 793 [2022-07-20 22:51:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:00,692 INFO L225 Difference]: With dead ends: 3865 [2022-07-20 22:51:00,693 INFO L226 Difference]: Without dead ends: 3045 [2022-07-20 22:51:00,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2022-07-20 22:51:00,697 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 2558 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 1410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 11475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1410 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:00,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 910 Invalid, 11475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1410 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-20 22:51:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-07-20 22:51:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 3045. [2022-07-20 22:51:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 3044 states have (on average 1.2598554533508541) internal successors, (3835), 3044 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3835 transitions. [2022-07-20 22:51:00,759 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3835 transitions. Word has length 793 [2022-07-20 22:51:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:00,761 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 3835 transitions. [2022-07-20 22:51:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 61.0) internal successors, (793), 12 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3835 transitions. [2022-07-20 22:51:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2022-07-20 22:51:00,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:00,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:00,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:51:00,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1702874494, now seen corresponding path program 1 times [2022-07-20 22:51:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:00,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473614361] [2022-07-20 22:51:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:00,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:51:01,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:01,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473614361] [2022-07-20 22:51:01,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473614361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:01,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:01,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:01,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770755961] [2022-07-20 22:51:01,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:01,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:01,304 INFO L87 Difference]: Start difference. First operand 3045 states and 3835 transitions. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:03,834 INFO L93 Difference]: Finished difference Result 6187 states and 8513 transitions. [2022-07-20 22:51:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:03,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 800 [2022-07-20 22:51:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:03,863 INFO L225 Difference]: With dead ends: 6187 [2022-07-20 22:51:03,863 INFO L226 Difference]: Without dead ends: 3863 [2022-07-20 22:51:03,868 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 [2022-07-20 22:51:03,871 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 92 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:03,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 984 Invalid, 3473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1177 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 22:51:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2022-07-20 22:51:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3863. [2022-07-20 22:51:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3862 states have (on average 1.3353184878301398) internal successors, (5157), 3862 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5157 transitions. [2022-07-20 22:51:03,948 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5157 transitions. Word has length 800 [2022-07-20 22:51:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:03,950 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5157 transitions. [2022-07-20 22:51:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5157 transitions. [2022-07-20 22:51:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2022-07-20 22:51:03,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:03,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:03,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:51:03,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 674224578, now seen corresponding path program 1 times [2022-07-20 22:51:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:03,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183160478] [2022-07-20 22:51:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:03,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 22:51:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:04,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183160478] [2022-07-20 22:51:04,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183160478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:04,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:04,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:51:04,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046469689] [2022-07-20 22:51:04,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:04,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:04,233 INFO L87 Difference]: Start difference. First operand 3863 states and 5157 transitions. Second operand has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:06,789 INFO L93 Difference]: Finished difference Result 9459 states and 13327 transitions. [2022-07-20 22:51:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:06,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 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 805 [2022-07-20 22:51:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:06,815 INFO L225 Difference]: With dead ends: 9459 [2022-07-20 22:51:06,815 INFO L226 Difference]: Without dead ends: 6317 [2022-07-20 22:51:06,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:06,824 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 899 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:06,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 387 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 22:51:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2022-07-20 22:51:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 6317. [2022-07-20 22:51:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 6316 states have (on average 1.3589297023432552) internal successors, (8583), 6316 states have internal predecessors, (8583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 8583 transitions. [2022-07-20 22:51:06,954 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 8583 transitions. Word has length 805 [2022-07-20 22:51:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:06,955 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 8583 transitions. [2022-07-20 22:51:06,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.3333333333333) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 8583 transitions. [2022-07-20 22:51:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2022-07-20 22:51:06,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:06,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:06,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:51:06,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1893741354, now seen corresponding path program 1 times [2022-07-20 22:51:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:06,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329653138] [2022-07-20 22:51:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-20 22:51:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:07,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329653138] [2022-07-20 22:51:07,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329653138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:07,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:07,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:51:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456172977] [2022-07-20 22:51:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:07,204 INFO L87 Difference]: Start difference. First operand 6317 states and 8583 transitions. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 2 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:09,616 INFO L93 Difference]: Finished difference Result 15185 states and 21921 transitions. [2022-07-20 22:51:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 2 states have internal predecessors, (804), 0 states have call successors, (0), 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 824 [2022-07-20 22:51:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:09,664 INFO L225 Difference]: With dead ends: 15185 [2022-07-20 22:51:09,664 INFO L226 Difference]: Without dead ends: 9589 [2022-07-20 22:51:09,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:09,677 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 878 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:09,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 624 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:51:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2022-07-20 22:51:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 9589. [2022-07-20 22:51:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9589 states, 9588 states have (on average 1.3235294117647058) internal successors, (12690), 9588 states have internal predecessors, (12690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9589 states to 9589 states and 12690 transitions. [2022-07-20 22:51:09,878 INFO L78 Accepts]: Start accepts. Automaton has 9589 states and 12690 transitions. Word has length 824 [2022-07-20 22:51:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:09,878 INFO L495 AbstractCegarLoop]: Abstraction has 9589 states and 12690 transitions. [2022-07-20 22:51:09,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 2 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9589 states and 12690 transitions. [2022-07-20 22:51:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-07-20 22:51:09,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:09,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:09,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:51:09,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:09,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash -373636387, now seen corresponding path program 1 times [2022-07-20 22:51:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:09,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325880127] [2022-07-20 22:51:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:09,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 22:51:10,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:10,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325880127] [2022-07-20 22:51:10,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325880127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:10,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:10,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:51:10,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494750474] [2022-07-20 22:51:10,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:10,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:10,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:10,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:10,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:10,155 INFO L87 Difference]: Start difference. First operand 9589 states and 12690 transitions. Second operand has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 2 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:12,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:12,649 INFO L93 Difference]: Finished difference Result 25001 states and 34242 transitions. [2022-07-20 22:51:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 2 states have internal predecessors, (839), 0 states have call successors, (0), 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 882 [2022-07-20 22:51:12,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:12,685 INFO L225 Difference]: With dead ends: 25001 [2022-07-20 22:51:12,685 INFO L226 Difference]: Without dead ends: 16133 [2022-07-20 22:51:12,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:12,701 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 787 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 3462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:12,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 651 Invalid, 3462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:51:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16133 states. [2022-07-20 22:51:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16133 to 16133. [2022-07-20 22:51:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16133 states, 16132 states have (on average 1.3406893131663773) internal successors, (21628), 16132 states have internal predecessors, (21628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16133 states to 16133 states and 21628 transitions. [2022-07-20 22:51:12,953 INFO L78 Accepts]: Start accepts. Automaton has 16133 states and 21628 transitions. Word has length 882 [2022-07-20 22:51:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:12,954 INFO L495 AbstractCegarLoop]: Abstraction has 16133 states and 21628 transitions. [2022-07-20 22:51:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.6666666666667) internal successors, (839), 2 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 16133 states and 21628 transitions. [2022-07-20 22:51:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2022-07-20 22:51:12,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:12,986 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:12,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:51:12,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:12,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:12,988 INFO L85 PathProgramCache]: Analyzing trace with hash -14447241, now seen corresponding path program 1 times [2022-07-20 22:51:12,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:12,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811966607] [2022-07-20 22:51:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-20 22:51:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811966607] [2022-07-20 22:51:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811966607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:13,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:13,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495833700] [2022-07-20 22:51:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:13,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:51:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:51:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:51:13,211 INFO L87 Difference]: Start difference. First operand 16133 states and 21628 transitions. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:16,947 INFO L93 Difference]: Finished difference Result 38089 states and 51408 transitions. [2022-07-20 22:51:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:51:16,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 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 886 [2022-07-20 22:51:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:16,991 INFO L225 Difference]: With dead ends: 38089 [2022-07-20 22:51:16,991 INFO L226 Difference]: Without dead ends: 22677 [2022-07-20 22:51:17,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:51:17,017 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1751 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 5611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:17,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 439 Invalid, 5611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-20 22:51:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22677 states. [2022-07-20 22:51:17,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22677 to 22677. [2022-07-20 22:51:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22677 states, 22676 states have (on average 1.2690950784970894) internal successors, (28778), 22676 states have internal predecessors, (28778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22677 states to 22677 states and 28778 transitions. [2022-07-20 22:51:17,343 INFO L78 Accepts]: Start accepts. Automaton has 22677 states and 28778 transitions. Word has length 886 [2022-07-20 22:51:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:17,343 INFO L495 AbstractCegarLoop]: Abstraction has 22677 states and 28778 transitions. [2022-07-20 22:51:17,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:17,344 INFO L276 IsEmpty]: Start isEmpty. Operand 22677 states and 28778 transitions. [2022-07-20 22:51:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2022-07-20 22:51:17,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:17,378 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:17,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:51:17,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:17,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1596578955, now seen corresponding path program 1 times [2022-07-20 22:51:17,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:17,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216697354] [2022-07-20 22:51:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-20 22:51:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:17,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216697354] [2022-07-20 22:51:17,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216697354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:17,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:17,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726735606] [2022-07-20 22:51:17,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:17,705 INFO L87 Difference]: Start difference. First operand 22677 states and 28778 transitions. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:20,396 INFO L93 Difference]: Finished difference Result 62629 states and 80588 transitions. [2022-07-20 22:51:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 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 888 [2022-07-20 22:51:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:20,464 INFO L225 Difference]: With dead ends: 62629 [2022-07-20 22:51:20,464 INFO L226 Difference]: Without dead ends: 40673 [2022-07-20 22:51:20,496 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 [2022-07-20 22:51:20,497 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 802 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:20,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 734 Invalid, 3253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:51:20,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40673 states. [2022-07-20 22:51:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40673 to 40673. [2022-07-20 22:51:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40673 states, 40672 states have (on average 1.2593922108575923) internal successors, (51222), 40672 states have internal predecessors, (51222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 51222 transitions. [2022-07-20 22:51:21,100 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 51222 transitions. Word has length 888 [2022-07-20 22:51:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:21,101 INFO L495 AbstractCegarLoop]: Abstraction has 40673 states and 51222 transitions. [2022-07-20 22:51:21,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 51222 transitions. [2022-07-20 22:51:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2022-07-20 22:51:21,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:21,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:21,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:51:21,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:21,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1816576166, now seen corresponding path program 1 times [2022-07-20 22:51:21,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:21,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786587876] [2022-07-20 22:51:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:21,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 22:51:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:21,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786587876] [2022-07-20 22:51:21,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786587876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:21,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:21,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:21,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248842732] [2022-07-20 22:51:21,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:21,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:21,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:21,409 INFO L87 Difference]: Start difference. First operand 40673 states and 51222 transitions. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:23,957 INFO L93 Difference]: Finished difference Result 80625 states and 101718 transitions. [2022-07-20 22:51:23,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:23,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 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 931 [2022-07-20 22:51:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:24,016 INFO L225 Difference]: With dead ends: 80625 [2022-07-20 22:51:24,016 INFO L226 Difference]: Without dead ends: 40673 [2022-07-20 22:51:24,038 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 [2022-07-20 22:51:24,041 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 837 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:24,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1064 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 22:51:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40673 states. [2022-07-20 22:51:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40673 to 40673. [2022-07-20 22:51:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40673 states, 40672 states have (on average 1.228068450039339) internal successors, (49948), 40672 states have internal predecessors, (49948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 49948 transitions. [2022-07-20 22:51:24,652 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 49948 transitions. Word has length 931 [2022-07-20 22:51:24,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:24,653 INFO L495 AbstractCegarLoop]: Abstraction has 40673 states and 49948 transitions. [2022-07-20 22:51:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 49948 transitions. [2022-07-20 22:51:24,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2022-07-20 22:51:24,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:24,699 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:24,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:51:24,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:24,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:24,700 INFO L85 PathProgramCache]: Analyzing trace with hash 676789940, now seen corresponding path program 1 times [2022-07-20 22:51:24,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:24,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415056020] [2022-07-20 22:51:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:24,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-20 22:51:25,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:25,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415056020] [2022-07-20 22:51:25,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415056020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:25,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:25,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:25,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024610276] [2022-07-20 22:51:25,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:25,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:25,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:25,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:25,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:25,057 INFO L87 Difference]: Start difference. First operand 40673 states and 49948 transitions. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:27,685 INFO L93 Difference]: Finished difference Result 80625 states and 99170 transitions. [2022-07-20 22:51:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:27,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 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 1028 [2022-07-20 22:51:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:27,732 INFO L225 Difference]: With dead ends: 80625 [2022-07-20 22:51:27,732 INFO L226 Difference]: Without dead ends: 40673 [2022-07-20 22:51:27,765 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 [2022-07-20 22:51:27,766 INFO L413 NwaCegarLoop]: 1397 mSDtfsCounter, 833 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:27,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1405 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:51:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40673 states. [2022-07-20 22:51:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40673 to 40673. [2022-07-20 22:51:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40673 states, 40672 states have (on average 1.1333595594020456) internal successors, (46096), 40672 states have internal predecessors, (46096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40673 states to 40673 states and 46096 transitions. [2022-07-20 22:51:28,279 INFO L78 Accepts]: Start accepts. Automaton has 40673 states and 46096 transitions. Word has length 1028 [2022-07-20 22:51:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:28,279 INFO L495 AbstractCegarLoop]: Abstraction has 40673 states and 46096 transitions. [2022-07-20 22:51:28,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 40673 states and 46096 transitions. [2022-07-20 22:51:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2022-07-20 22:51:28,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:28,316 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:28,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:51:28,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1423881927, now seen corresponding path program 1 times [2022-07-20 22:51:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:28,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706054456] [2022-07-20 22:51:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-20 22:51:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:28,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706054456] [2022-07-20 22:51:28,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706054456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:28,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:28,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:51:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785322481] [2022-07-20 22:51:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:28,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:28,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:28,735 INFO L87 Difference]: Start difference. First operand 40673 states and 46096 transitions. Second operand has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 2 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:31,452 INFO L93 Difference]: Finished difference Result 109255 states and 124898 transitions. [2022-07-20 22:51:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:31,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 2 states have internal predecessors, (904), 0 states have call successors, (0), 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 1034 [2022-07-20 22:51:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:31,523 INFO L225 Difference]: With dead ends: 109255 [2022-07-20 22:51:31,524 INFO L226 Difference]: Without dead ends: 66031 [2022-07-20 22:51:31,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:31,547 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 971 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:31,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 474 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 22:51:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66031 states. [2022-07-20 22:51:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66031 to 55397. [2022-07-20 22:51:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55397 states, 55396 states have (on average 1.1318506751389992) internal successors, (62700), 55396 states have internal predecessors, (62700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55397 states to 55397 states and 62700 transitions. [2022-07-20 22:51:32,259 INFO L78 Accepts]: Start accepts. Automaton has 55397 states and 62700 transitions. Word has length 1034 [2022-07-20 22:51:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:32,259 INFO L495 AbstractCegarLoop]: Abstraction has 55397 states and 62700 transitions. [2022-07-20 22:51:32,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.3333333333333) internal successors, (904), 2 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 55397 states and 62700 transitions. [2022-07-20 22:51:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1197 [2022-07-20 22:51:32,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:32,314 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:32,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:51:32,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1414015629, now seen corresponding path program 1 times [2022-07-20 22:51:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:32,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405619780] [2022-07-20 22:51:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-20 22:51:32,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:32,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405619780] [2022-07-20 22:51:32,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405619780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:32,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:32,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114305316] [2022-07-20 22:51:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:32,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:32,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:32,954 INFO L87 Difference]: Start difference. First operand 55397 states and 62700 transitions. Second operand has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:35,687 INFO L93 Difference]: Finished difference Result 129705 states and 148182 transitions. [2022-07-20 22:51:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:35,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 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 1196 [2022-07-20 22:51:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:35,777 INFO L225 Difference]: With dead ends: 129705 [2022-07-20 22:51:35,778 INFO L226 Difference]: Without dead ends: 75029 [2022-07-20 22:51:35,810 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 [2022-07-20 22:51:35,810 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 852 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 1045 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:35,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 324 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1045 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:51:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75029 states. [2022-07-20 22:51:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75029 to 74211. [2022-07-20 22:51:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74211 states, 74210 states have (on average 1.1296321250505323) internal successors, (83830), 74210 states have internal predecessors, (83830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74211 states to 74211 states and 83830 transitions. [2022-07-20 22:51:36,891 INFO L78 Accepts]: Start accepts. Automaton has 74211 states and 83830 transitions. Word has length 1196 [2022-07-20 22:51:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:36,892 INFO L495 AbstractCegarLoop]: Abstraction has 74211 states and 83830 transitions. [2022-07-20 22:51:36,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.0) internal successors, (1074), 3 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 74211 states and 83830 transitions. [2022-07-20 22:51:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1379 [2022-07-20 22:51:36,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:36,972 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:51:36,973 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1283489420, now seen corresponding path program 1 times [2022-07-20 22:51:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:36,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476122409] [2022-07-20 22:51:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1992 backedges. 1018 proven. 0 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2022-07-20 22:51:37,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:37,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476122409] [2022-07-20 22:51:37,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476122409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:37,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:37,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:37,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968036150] [2022-07-20 22:51:37,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:37,489 INFO L87 Difference]: Start difference. First operand 74211 states and 83830 transitions. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:40,203 INFO L93 Difference]: Finished difference Result 174695 states and 198183 transitions. [2022-07-20 22:51:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:40,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 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 1378 [2022-07-20 22:51:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:40,332 INFO L225 Difference]: With dead ends: 174695 [2022-07-20 22:51:40,333 INFO L226 Difference]: Without dead ends: 101205 [2022-07-20 22:51:40,557 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 [2022-07-20 22:51:40,558 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 770 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:40,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 564 Invalid, 3261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:51:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101205 states. [2022-07-20 22:51:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101205 to 99569. [2022-07-20 22:51:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99569 states, 99568 states have (on average 1.1225695002410414) internal successors, (111772), 99568 states have internal predecessors, (111772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99569 states to 99569 states and 111772 transitions. [2022-07-20 22:51:41,870 INFO L78 Accepts]: Start accepts. Automaton has 99569 states and 111772 transitions. Word has length 1378 [2022-07-20 22:51:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 99569 states and 111772 transitions. [2022-07-20 22:51:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 99569 states and 111772 transitions. [2022-07-20 22:51:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1385 [2022-07-20 22:51:41,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:41,953 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:41,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:51:41,954 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:41,955 INFO L85 PathProgramCache]: Analyzing trace with hash 282017370, now seen corresponding path program 1 times [2022-07-20 22:51:41,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098199386] [2022-07-20 22:51:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:41,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-20 22:51:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098199386] [2022-07-20 22:51:42,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098199386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:42,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 22:51:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568330928] [2022-07-20 22:51:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:42,545 INFO L87 Difference]: Start difference. First operand 99569 states and 111772 transitions. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 2 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:45,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:45,511 INFO L93 Difference]: Finished difference Result 218867 states and 246554 transitions. [2022-07-20 22:51:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:45,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 2 states have internal predecessors, (905), 0 states have call successors, (0), 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 1384 [2022-07-20 22:51:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:45,672 INFO L225 Difference]: With dead ends: 218867 [2022-07-20 22:51:45,672 INFO L226 Difference]: Without dead ends: 120019 [2022-07-20 22:51:45,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:51:45,712 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 909 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 325 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:51:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120019 states. [2022-07-20 22:51:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120019 to 118383. [2022-07-20 22:51:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118383 states, 118382 states have (on average 1.1040445337973679) internal successors, (130699), 118382 states have internal predecessors, (130699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118383 states to 118383 states and 130699 transitions. [2022-07-20 22:51:47,133 INFO L78 Accepts]: Start accepts. Automaton has 118383 states and 130699 transitions. Word has length 1384 [2022-07-20 22:51:47,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:47,134 INFO L495 AbstractCegarLoop]: Abstraction has 118383 states and 130699 transitions. [2022-07-20 22:51:47,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 2 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:47,134 INFO L276 IsEmpty]: Start isEmpty. Operand 118383 states and 130699 transitions. [2022-07-20 22:51:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1406 [2022-07-20 22:51:47,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:47,491 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:47,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:51:47,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2078302797, now seen corresponding path program 1 times [2022-07-20 22:51:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:47,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545349566] [2022-07-20 22:51:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 1129 proven. 89 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-07-20 22:51:48,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:48,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545349566] [2022-07-20 22:51:48,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545349566] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:51:48,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904282086] [2022-07-20 22:51:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:48,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:51:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:51:48,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:51:48,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 22:51:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:48,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:51:48,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:51:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 1143 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-20 22:51:49,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:51:49,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904282086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:49,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:51:49,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-20 22:51:49,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582170224] [2022-07-20 22:51:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:49,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:51:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:51:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:51:49,204 INFO L87 Difference]: Start difference. First operand 118383 states and 130699 transitions. Second operand has 3 states, 3 states have (on average 393.6666666666667) internal successors, (1181), 3 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:52,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:52,030 INFO L93 Difference]: Finished difference Result 236863 states and 261496 transitions. [2022-07-20 22:51:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:51:52,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 393.6666666666667) internal successors, (1181), 3 states have internal predecessors, (1181), 0 states have call successors, (0), 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 1405 [2022-07-20 22:51:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:52,173 INFO L225 Difference]: With dead ends: 236863 [2022-07-20 22:51:52,173 INFO L226 Difference]: Without dead ends: 118383 [2022-07-20 22:51:52,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1409 GetRequests, 1404 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:51:52,227 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 810 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:52,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1319 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:51:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118383 states. [2022-07-20 22:51:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118383 to 116747. [2022-07-20 22:51:53,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116747 states, 116746 states have (on average 1.0857074332311172) internal successors, (126752), 116746 states have internal predecessors, (126752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116747 states to 116747 states and 126752 transitions. [2022-07-20 22:51:53,699 INFO L78 Accepts]: Start accepts. Automaton has 116747 states and 126752 transitions. Word has length 1405 [2022-07-20 22:51:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:51:53,699 INFO L495 AbstractCegarLoop]: Abstraction has 116747 states and 126752 transitions. [2022-07-20 22:51:53,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.6666666666667) internal successors, (1181), 3 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:53,700 INFO L276 IsEmpty]: Start isEmpty. Operand 116747 states and 126752 transitions. [2022-07-20 22:51:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1531 [2022-07-20 22:51:53,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:51:53,773 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:51:53,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-20 22:51:53,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-20 22:51:53,976 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:51:53,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:51:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash 10574707, now seen corresponding path program 1 times [2022-07-20 22:51:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:51:53,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102437055] [2022-07-20 22:51:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:51:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:51:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:51:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 803 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-20 22:51:54,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:51:54,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102437055] [2022-07-20 22:51:54,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102437055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:51:54,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:51:54,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:51:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567295730] [2022-07-20 22:51:54,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:51:54,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:51:54,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:51:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:51:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:51:54,894 INFO L87 Difference]: Start difference. First operand 116747 states and 126752 transitions. Second operand has 4 states, 4 states have (on average 352.5) internal successors, (1410), 3 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:51:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:51:58,537 INFO L93 Difference]: Finished difference Result 234409 states and 254450 transitions. [2022-07-20 22:51:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:51:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 352.5) internal successors, (1410), 3 states have internal predecessors, (1410), 0 states have call successors, (0), 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 1530 [2022-07-20 22:51:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:51:58,669 INFO L225 Difference]: With dead ends: 234409 [2022-07-20 22:51:58,669 INFO L226 Difference]: Without dead ends: 117565 [2022-07-20 22:51:58,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:51:58,735 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1696 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3252 mSolverCounterSat, 837 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 4089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 837 IncrementalHoareTripleChecker+Valid, 3252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:51:58,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 479 Invalid, 4089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [837 Valid, 3252 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-20 22:51:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117565 states. [2022-07-20 22:52:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117565 to 117565. [2022-07-20 22:52:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117565 states, 117564 states have (on average 1.0255775577557755) internal successors, (120571), 117564 states have internal predecessors, (120571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117565 states to 117565 states and 120571 transitions. [2022-07-20 22:52:00,187 INFO L78 Accepts]: Start accepts. Automaton has 117565 states and 120571 transitions. Word has length 1530 [2022-07-20 22:52:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:52:00,188 INFO L495 AbstractCegarLoop]: Abstraction has 117565 states and 120571 transitions. [2022-07-20 22:52:00,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 352.5) internal successors, (1410), 3 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 117565 states and 120571 transitions. [2022-07-20 22:52:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1639 [2022-07-20 22:52:00,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:52:00,263 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:52:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:52:00,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:52:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:52:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1000629019, now seen corresponding path program 1 times [2022-07-20 22:52:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:52:00,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811209221] [2022-07-20 22:52:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:52:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:52:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:52:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 1116 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-20 22:52:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:52:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811209221] [2022-07-20 22:52:01,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811209221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:52:01,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:52:01,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:52:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565068235] [2022-07-20 22:52:01,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:52:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:52:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:52:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:52:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:52:01,190 INFO L87 Difference]: Start difference. First operand 117565 states and 120571 transitions. Second operand has 4 states, 4 states have (on average 379.0) internal successors, (1516), 3 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:04,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:52:04,319 INFO L93 Difference]: Finished difference Result 235227 states and 241237 transitions. [2022-07-20 22:52:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:52:04,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 379.0) internal successors, (1516), 3 states have internal predecessors, (1516), 0 states have call successors, (0), 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 1638 [2022-07-20 22:52:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:52:04,451 INFO L225 Difference]: With dead ends: 235227 [2022-07-20 22:52:04,451 INFO L226 Difference]: Without dead ends: 117565 [2022-07-20 22:52:04,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:52:04,510 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1429 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:52:04,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 183 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 3684 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 22:52:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117565 states. [2022-07-20 22:52:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117565 to 116747. [2022-07-20 22:52:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116747 states, 116746 states have (on average 1.0254398437633838) internal successors, (119716), 116746 states have internal predecessors, (119716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116747 states to 116747 states and 119716 transitions. [2022-07-20 22:52:06,240 INFO L78 Accepts]: Start accepts. Automaton has 116747 states and 119716 transitions. Word has length 1638 [2022-07-20 22:52:06,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:52:06,241 INFO L495 AbstractCegarLoop]: Abstraction has 116747 states and 119716 transitions. [2022-07-20 22:52:06,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 379.0) internal successors, (1516), 3 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 116747 states and 119716 transitions. [2022-07-20 22:52:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1745 [2022-07-20 22:52:06,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:52:06,345 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:52:06,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:52:06,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:52:06,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:52:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 759714393, now seen corresponding path program 1 times [2022-07-20 22:52:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:52:06,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429669372] [2022-07-20 22:52:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:52:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:52:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:52:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3143 backedges. 2079 proven. 89 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2022-07-20 22:52:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:52:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429669372] [2022-07-20 22:52:07,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429669372] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:52:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135123886] [2022-07-20 22:52:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:52:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:52:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:52:07,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:52:07,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 22:52:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:52:07,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:52:07,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:52:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3143 backedges. 1803 proven. 0 refuted. 0 times theorem prover too weak. 1340 trivial. 0 not checked. [2022-07-20 22:52:08,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:52:08,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135123886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:52:08,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:52:08,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-20 22:52:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145218028] [2022-07-20 22:52:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:52:08,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:52:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:52:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:52:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:52:08,877 INFO L87 Difference]: Start difference. First operand 116747 states and 119716 transitions. Second operand has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:10,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:52:10,917 INFO L93 Difference]: Finished difference Result 232773 states and 238708 transitions. [2022-07-20 22:52:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:52:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 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 1744 [2022-07-20 22:52:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:52:11,058 INFO L225 Difference]: With dead ends: 232773 [2022-07-20 22:52:11,058 INFO L226 Difference]: Without dead ends: 116747 [2022-07-20 22:52:11,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1748 GetRequests, 1743 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:52:11,097 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 171 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:52:11,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 921 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-20 22:52:11,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116747 states. [2022-07-20 22:52:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116747 to 114293. [2022-07-20 22:52:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114293 states, 114292 states have (on average 1.019003954782487) internal successors, (116464), 114292 states have internal predecessors, (116464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114293 states to 114293 states and 116464 transitions. [2022-07-20 22:52:12,460 INFO L78 Accepts]: Start accepts. Automaton has 114293 states and 116464 transitions. Word has length 1744 [2022-07-20 22:52:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:52:12,461 INFO L495 AbstractCegarLoop]: Abstraction has 114293 states and 116464 transitions. [2022-07-20 22:52:12,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 114293 states and 116464 transitions. [2022-07-20 22:52:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4547 [2022-07-20 22:52:13,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:52:13,119 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:52:13,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-20 22:52:13,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-20 22:52:13,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:52:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:52:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2003979343, now seen corresponding path program 1 times [2022-07-20 22:52:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:52:13,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739955991] [2022-07-20 22:52:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:52:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:52:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:52:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 20648 backedges. 6086 proven. 89 refuted. 0 times theorem prover too weak. 14473 trivial. 0 not checked. [2022-07-20 22:52:16,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:52:16,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739955991] [2022-07-20 22:52:16,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739955991] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:52:16,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513864466] [2022-07-20 22:52:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:52:16,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:52:16,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:52:16,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 22:52:16,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 22:52:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:52:17,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 5233 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:52:17,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:52:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20648 backedges. 10425 proven. 0 refuted. 0 times theorem prover too weak. 10223 trivial. 0 not checked. [2022-07-20 22:52:18,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:52:18,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513864466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:52:18,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 22:52:18,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-20 22:52:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999619416] [2022-07-20 22:52:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:52:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:52:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:52:18,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:52:18,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:52:18,285 INFO L87 Difference]: Start difference. First operand 114293 states and 116464 transitions. Second operand has 3 states, 3 states have (on average 451.3333333333333) internal successors, (1354), 3 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:52:20,495 INFO L93 Difference]: Finished difference Result 231137 states and 235525 transitions. [2022-07-20 22:52:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:52:20,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 451.3333333333333) internal successors, (1354), 3 states have internal predecessors, (1354), 0 states have call successors, (0), 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 4546 [2022-07-20 22:52:20,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:52:20,619 INFO L225 Difference]: With dead ends: 231137 [2022-07-20 22:52:20,619 INFO L226 Difference]: Without dead ends: 117565 [2022-07-20 22:52:20,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4550 GetRequests, 4545 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:52:20,671 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 493 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:52:20,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 1010 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-20 22:52:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117565 states. [2022-07-20 22:52:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117565 to 114293. [2022-07-20 22:52:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114293 states, 114292 states have (on average 1.0176302803345816) internal successors, (116307), 114292 states have internal predecessors, (116307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114293 states to 114293 states and 116307 transitions. [2022-07-20 22:52:21,992 INFO L78 Accepts]: Start accepts. Automaton has 114293 states and 116307 transitions. Word has length 4546 [2022-07-20 22:52:21,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:52:21,994 INFO L495 AbstractCegarLoop]: Abstraction has 114293 states and 116307 transitions. [2022-07-20 22:52:21,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 451.3333333333333) internal successors, (1354), 3 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:52:21,994 INFO L276 IsEmpty]: Start isEmpty. Operand 114293 states and 116307 transitions. [2022-07-20 22:52:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4864 [2022-07-20 22:52:22,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:52:22,696 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:52:22,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 22:52:22,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:52:22,898 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:52:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:52:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2009465316, now seen corresponding path program 1 times [2022-07-20 22:52:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:52:22,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231841558] [2022-07-20 22:52:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:52:22,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:52:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat