./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem06_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem06_label33.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 b97036a8ea63c4afe4e17ab498413a7da82785e46d8dc8de6bae5a7f7f36d51b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:08:43,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:08:43,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:08:43,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:08:43,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:08:43,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:08:43,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:08:43,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:08:43,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:08:43,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:08:43,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:08:43,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:08:43,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:08:43,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:08:43,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:08:43,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:08:43,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:08:43,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:08:43,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:08:43,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:08:43,811 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:08:43,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:08:43,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:08:43,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:08:43,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:08:43,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:08:43,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:08:43,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:08:43,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:08:43,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:08:43,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:08:43,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:08:43,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:08:43,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:08:43,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:08:43,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:08:43,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:08:43,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:08:43,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:08:43,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:08:43,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:08:43,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:08:43,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:08:43,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:08:43,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:08:43,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:08:43,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:08:43,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:08:43,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:08:43,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:08:43,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:08:43,857 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:08:43,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:08:43,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:08:43,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:08:43,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:08:43,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:08:43,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:08:43,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:08:43,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:08:43,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:08:43,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:08:43,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:08:43,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:08:43,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:08:43,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:08:43,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:08:43,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:08:43,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:08:43,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:08:43,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:08:43,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:08:43,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:08:43,862 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:08:43,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:08:43,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:08:43,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b97036a8ea63c4afe4e17ab498413a7da82785e46d8dc8de6bae5a7f7f36d51b [2022-07-13 12:08:44,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:08:44,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:08:44,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:08:44,060 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:08:44,061 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:08:44,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label33.c [2022-07-13 12:08:44,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2067d24b/d16cc69260314e5297458f3373728ea4/FLAGe3d5ecc6e [2022-07-13 12:08:44,656 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:08:44,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label33.c [2022-07-13 12:08:44,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2067d24b/d16cc69260314e5297458f3373728ea4/FLAGe3d5ecc6e [2022-07-13 12:08:44,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2067d24b/d16cc69260314e5297458f3373728ea4 [2022-07-13 12:08:44,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:08:44,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:08:44,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:08:44,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:08:44,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:08:44,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:08:44" (1/1) ... [2022-07-13 12:08:44,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff458be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:44, skipping insertion in model container [2022-07-13 12:08:44,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:08:44" (1/1) ... [2022-07-13 12:08:44,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:08:45,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:08:46,112 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/Problem06_label33.c[332549,332562] [2022-07-13 12:08:46,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:08:46,143 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:08:46,699 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/Problem06_label33.c[332549,332562] [2022-07-13 12:08:46,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:08:46,738 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:08:46,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46 WrapperNode [2022-07-13 12:08:46,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:08:46,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:08:46,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:08:46,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:08:46,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:46,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,066 INFO L137 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 10173 [2022-07-13 12:08:47,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:08:47,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:08:47,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:08:47,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:08:47,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:08:47,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:08:47,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:08:47,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:08:47,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (1/1) ... [2022-07-13 12:08:47,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:08:47,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:08:47,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 12:08:47,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 12:08:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:08:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:08:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:08:47,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:08:47,636 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:08:47,637 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:08:51,383 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:08:51,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:08:51,396 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:08:51,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:08:51 BoogieIcfgContainer [2022-07-13 12:08:51,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:08:51,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:08:51,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:08:51,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:08:51,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:08:44" (1/3) ... [2022-07-13 12:08:51,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a8f7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:08:51, skipping insertion in model container [2022-07-13 12:08:51,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:08:46" (2/3) ... [2022-07-13 12:08:51,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a8f7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:08:51, skipping insertion in model container [2022-07-13 12:08:51,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:08:51" (3/3) ... [2022-07-13 12:08:51,406 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label33.c [2022-07-13 12:08:51,416 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:08:51,416 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:08:51,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:08:51,469 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@58af6fb7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cdca23b [2022-07-13 12:08:51,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:08:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 1288 states have (on average 1.8571428571428572) internal successors, (2392), 1289 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:08:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2022-07-13 12:08:51,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:08:51,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:08:51,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:08:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:08:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1661865593, now seen corresponding path program 1 times [2022-07-13 12:08:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:08:51,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936284376] [2022-07-13 12:08:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:08:51,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:08:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:08:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:08:52,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:08:52,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936284376] [2022-07-13 12:08:52,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936284376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:08:52,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:08:52,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:08:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796871267] [2022-07-13 12:08:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:08:52,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:08:52,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:08:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:08:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:08:52,914 INFO L87 Difference]: Start difference. First operand has 1290 states, 1288 states have (on average 1.8571428571428572) internal successors, (2392), 1289 states have internal predecessors, (2392), 0 states have call successors, (0), 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 4 states, 4 states have (on average 237.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:08:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:08:58,804 INFO L93 Difference]: Finished difference Result 4664 states and 8870 transitions. [2022-07-13 12:08:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 12:08:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 237.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 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 948 [2022-07-13 12:08:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:08:58,840 INFO L225 Difference]: With dead ends: 4664 [2022-07-13 12:08:58,840 INFO L226 Difference]: Without dead ends: 3307 [2022-07-13 12:08:58,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:08:58,852 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 2477 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 5466 mSolverCounterSat, 1908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 7374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1908 IncrementalHoareTripleChecker+Valid, 5466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:08:58,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2477 Valid, 919 Invalid, 7374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1908 Valid, 5466 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-13 12:08:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2022-07-13 12:08:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3286. [2022-07-13 12:08:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3285 states have (on average 1.5598173515981735) internal successors, (5124), 3285 states have internal predecessors, (5124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:08:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 5124 transitions. [2022-07-13 12:08:58,982 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 5124 transitions. Word has length 948 [2022-07-13 12:08:58,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:08:58,986 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 5124 transitions. [2022-07-13 12:08:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:08:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 5124 transitions. [2022-07-13 12:08:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2022-07-13 12:08:59,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:08:59,060 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:08:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:08:59,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:08:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:08:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash -757211379, now seen corresponding path program 1 times [2022-07-13 12:08:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:08:59,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672034783] [2022-07-13 12:08:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:08:59,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:08:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:08:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:08:59,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:08:59,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672034783] [2022-07-13 12:08:59,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672034783] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:08:59,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996475086] [2022-07-13 12:08:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:08:59,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:08:59,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:08:59,550 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) [2022-07-13 12:08:59,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 12:08:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:08:59,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:08:59,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:09:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 12:09:00,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:09:00,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996475086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:00,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:09:00,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 12:09:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894615206] [2022-07-13 12:09:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:00,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:09:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:09:00,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:09:00,020 INFO L87 Difference]: Start difference. First operand 3286 states and 5124 transitions. Second operand has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 2 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:02,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:02,942 INFO L93 Difference]: Finished difference Result 8594 states and 13104 transitions. [2022-07-13 12:09:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:09:02,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 2 states have internal predecessors, (971), 0 states have call successors, (0), 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 973 [2022-07-13 12:09:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:02,957 INFO L225 Difference]: With dead ends: 8594 [2022-07-13 12:09:02,957 INFO L226 Difference]: Without dead ends: 5310 [2022-07-13 12:09:02,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:09:02,963 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1388 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 1283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 4138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1283 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:02,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 751 Invalid, 4138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1283 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 12:09:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5310 states. [2022-07-13 12:09:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5310 to 5291. [2022-07-13 12:09:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 1.395274102079395) internal successors, (7381), 5290 states have internal predecessors, (7381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 7381 transitions. [2022-07-13 12:09:03,050 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 7381 transitions. Word has length 973 [2022-07-13 12:09:03,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:03,051 INFO L495 AbstractCegarLoop]: Abstraction has 5291 states and 7381 transitions. [2022-07-13 12:09:03,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 2 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:03,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 7381 transitions. [2022-07-13 12:09:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2022-07-13 12:09:03,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:03,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:03,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 12:09:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:09:03,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2038163882, now seen corresponding path program 1 times [2022-07-13 12:09:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:03,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553656735] [2022-07-13 12:09:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 12:09:03,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553656735] [2022-07-13 12:09:03,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553656735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:03,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:09:03,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:09:03,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60887333] [2022-07-13 12:09:03,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:09:03,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:09:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:09:03,598 INFO L87 Difference]: Start difference. First operand 5291 states and 7381 transitions. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 2 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) [2022-07-13 12:09:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:06,909 INFO L93 Difference]: Finished difference Result 12627 states and 18686 transitions. [2022-07-13 12:09:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:09:06,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 2 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 981 [2022-07-13 12:09:06,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:06,931 INFO L225 Difference]: With dead ends: 12627 [2022-07-13 12:09:06,931 INFO L226 Difference]: Without dead ends: 8331 [2022-07-13 12:09:06,937 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 [2022-07-13 12:09:06,939 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 1452 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 1282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1282 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:06,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 1014 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1282 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 12:09:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2022-07-13 12:09:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 8318. [2022-07-13 12:09:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8318 states, 8317 states have (on average 1.380545869905014) internal successors, (11482), 8317 states have internal predecessors, (11482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8318 states to 8318 states and 11482 transitions. [2022-07-13 12:09:07,054 INFO L78 Accepts]: Start accepts. Automaton has 8318 states and 11482 transitions. Word has length 981 [2022-07-13 12:09:07,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:07,055 INFO L495 AbstractCegarLoop]: Abstraction has 8318 states and 11482 transitions. [2022-07-13 12:09:07,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 2 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) [2022-07-13 12:09:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8318 states and 11482 transitions. [2022-07-13 12:09:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2022-07-13 12:09:07,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:07,072 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:07,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:09:07,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1228177688, now seen corresponding path program 1 times [2022-07-13 12:09:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:07,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603429216] [2022-07-13 12:09:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 12:09:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:07,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603429216] [2022-07-13 12:09:07,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603429216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:07,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:09:07,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:09:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059300189] [2022-07-13 12:09:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:07,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:09:07,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:07,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:09:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:09:07,353 INFO L87 Difference]: Start difference. First operand 8318 states and 11482 transitions. Second operand has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 2 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:22,770 INFO L93 Difference]: Finished difference Result 21693 states and 30979 transitions. [2022-07-13 12:09:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:09:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 2 states have internal predecessors, (971), 0 states have call successors, (0), 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 985 [2022-07-13 12:09:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:22,856 INFO L225 Difference]: With dead ends: 21693 [2022-07-13 12:09:22,856 INFO L226 Difference]: Without dead ends: 14370 [2022-07-13 12:09:22,877 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 [2022-07-13 12:09:22,882 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 1242 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 3132 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 3132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:22,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1118 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 3132 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2022-07-13 12:09:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14370 states. [2022-07-13 12:09:23,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14370 to 14343. [2022-07-13 12:09:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14343 states, 14342 states have (on average 1.3315437177520568) internal successors, (19097), 14342 states have internal predecessors, (19097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14343 states to 14343 states and 19097 transitions. [2022-07-13 12:09:23,255 INFO L78 Accepts]: Start accepts. Automaton has 14343 states and 19097 transitions. Word has length 985 [2022-07-13 12:09:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:23,256 INFO L495 AbstractCegarLoop]: Abstraction has 14343 states and 19097 transitions. [2022-07-13 12:09:23,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.6666666666667) internal successors, (971), 2 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 14343 states and 19097 transitions. [2022-07-13 12:09:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2022-07-13 12:09:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:23,316 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 12:09:23,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1723198722, now seen corresponding path program 1 times [2022-07-13 12:09:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703119971] [2022-07-13 12:09:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:09:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703119971] [2022-07-13 12:09:23,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703119971] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 12:09:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136719860] [2022-07-13 12:09:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:23,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:09:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:09:23,922 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) [2022-07-13 12:09:23,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 12:09:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:24,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 12:09:24,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 12:09:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:09:25,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 12:09:25,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136719860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:25,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 12:09:25,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 12:09:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809515409] [2022-07-13 12:09:25,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:09:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:09:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:09:25,130 INFO L87 Difference]: Start difference. First operand 14343 states and 19097 transitions. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:32,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:32,334 INFO L93 Difference]: Finished difference Result 39803 states and 53891 transitions. [2022-07-13 12:09:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:09:32,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 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 992 [2022-07-13 12:09:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:32,420 INFO L225 Difference]: With dead ends: 39803 [2022-07-13 12:09:32,435 INFO L226 Difference]: Without dead ends: 26455 [2022-07-13 12:09:32,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 991 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:09:32,446 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 1366 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 3577 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 4148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 3577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:32,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 2445 Invalid, 4148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 3577 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-13 12:09:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26455 states. [2022-07-13 12:09:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26455 to 26417. [2022-07-13 12:09:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26417 states, 26416 states have (on average 1.293534221683828) internal successors, (34170), 26416 states have internal predecessors, (34170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:33,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26417 states to 26417 states and 34170 transitions. [2022-07-13 12:09:33,004 INFO L78 Accepts]: Start accepts. Automaton has 26417 states and 34170 transitions. Word has length 992 [2022-07-13 12:09:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:33,004 INFO L495 AbstractCegarLoop]: Abstraction has 26417 states and 34170 transitions. [2022-07-13 12:09:33,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 26417 states and 34170 transitions. [2022-07-13 12:09:33,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2022-07-13 12:09:33,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:33,147 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:33,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 12:09:33,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 12:09:33,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:33,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:33,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1187653834, now seen corresponding path program 1 times [2022-07-13 12:09:33,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:33,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214611976] [2022-07-13 12:09:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:33,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 12:09:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:33,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214611976] [2022-07-13 12:09:33,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214611976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:33,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:09:33,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:09:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217910445] [2022-07-13 12:09:33,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:09:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:09:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:09:33,796 INFO L87 Difference]: Start difference. First operand 26417 states and 34170 transitions. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 2 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:37,371 INFO L93 Difference]: Finished difference Result 75750 states and 98696 transitions. [2022-07-13 12:09:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:09:37,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 2 states have internal predecessors, (978), 0 states have call successors, (0), 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 997 [2022-07-13 12:09:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:37,550 INFO L225 Difference]: With dead ends: 75750 [2022-07-13 12:09:37,550 INFO L226 Difference]: Without dead ends: 50328 [2022-07-13 12:09:37,577 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 [2022-07-13 12:09:37,578 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 1372 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:37,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1186 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 2947 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 12:09:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50328 states. [2022-07-13 12:09:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50328 to 50314. [2022-07-13 12:09:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50314 states, 50313 states have (on average 1.24804722437541) internal successors, (62793), 50313 states have internal predecessors, (62793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50314 states to 50314 states and 62793 transitions. [2022-07-13 12:09:38,471 INFO L78 Accepts]: Start accepts. Automaton has 50314 states and 62793 transitions. Word has length 997 [2022-07-13 12:09:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:38,471 INFO L495 AbstractCegarLoop]: Abstraction has 50314 states and 62793 transitions. [2022-07-13 12:09:38,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 2 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 50314 states and 62793 transitions. [2022-07-13 12:09:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2022-07-13 12:09:38,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:38,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:38,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:09:38,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1407261487, now seen corresponding path program 1 times [2022-07-13 12:09:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:38,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472690601] [2022-07-13 12:09:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:38,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 12:09:39,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:39,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472690601] [2022-07-13 12:09:39,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472690601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:39,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:09:39,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:09:39,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432548636] [2022-07-13 12:09:39,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:39,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:09:39,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:09:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:09:39,167 INFO L87 Difference]: Start difference. First operand 50314 states and 62793 transitions. Second operand has 4 states, 4 states have (on average 256.75) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:47,443 INFO L93 Difference]: Finished difference Result 149550 states and 183575 transitions. [2022-07-13 12:09:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:09:47,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.75) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 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 1041 [2022-07-13 12:09:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:47,762 INFO L225 Difference]: With dead ends: 149550 [2022-07-13 12:09:47,762 INFO L226 Difference]: Without dead ends: 100231 [2022-07-13 12:09:47,801 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 [2022-07-13 12:09:47,801 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 2447 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 6660 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 7185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 6660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:47,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 1373 Invalid, 7185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 6660 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-13 12:09:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100231 states. [2022-07-13 12:09:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100231 to 100199. [2022-07-13 12:09:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100199 states, 100198 states have (on average 1.2132278089383022) internal successors, (121563), 100198 states have internal predecessors, (121563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100199 states to 100199 states and 121563 transitions. [2022-07-13 12:09:49,692 INFO L78 Accepts]: Start accepts. Automaton has 100199 states and 121563 transitions. Word has length 1041 [2022-07-13 12:09:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:49,693 INFO L495 AbstractCegarLoop]: Abstraction has 100199 states and 121563 transitions. [2022-07-13 12:09:49,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.75) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 100199 states and 121563 transitions. [2022-07-13 12:09:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2022-07-13 12:09:49,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:49,809 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:49,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:09:49,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:49,811 INFO L85 PathProgramCache]: Analyzing trace with hash -975523707, now seen corresponding path program 1 times [2022-07-13 12:09:49,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:49,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936040837] [2022-07-13 12:09:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:49,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 12:09:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:50,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936040837] [2022-07-13 12:09:50,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936040837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:50,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:09:50,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:09:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173111822] [2022-07-13 12:09:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:50,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:09:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:09:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:09:50,779 INFO L87 Difference]: Start difference. First operand 100199 states and 121563 transitions. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 2 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:09:55,560 INFO L93 Difference]: Finished difference Result 274271 states and 330421 transitions. [2022-07-13 12:09:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:09:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 2 states have internal predecessors, (998), 0 states have call successors, (0), 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 1055 [2022-07-13 12:09:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:09:55,986 INFO L225 Difference]: With dead ends: 274271 [2022-07-13 12:09:55,986 INFO L226 Difference]: Without dead ends: 175067 [2022-07-13 12:09:56,236 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 [2022-07-13 12:09:56,238 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1307 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:09:56,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1129 Invalid, 3661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 12:09:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175067 states. [2022-07-13 12:09:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175067 to 175050. [2022-07-13 12:09:58,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175050 states, 175049 states have (on average 1.1966992099355038) internal successors, (209481), 175049 states have internal predecessors, (209481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175050 states to 175050 states and 209481 transitions. [2022-07-13 12:09:59,046 INFO L78 Accepts]: Start accepts. Automaton has 175050 states and 209481 transitions. Word has length 1055 [2022-07-13 12:09:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:09:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 175050 states and 209481 transitions. [2022-07-13 12:09:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 2 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:09:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 175050 states and 209481 transitions. [2022-07-13 12:09:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2022-07-13 12:09:59,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:09:59,244 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:09:59,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:09:59,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:09:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:09:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1422048257, now seen corresponding path program 1 times [2022-07-13 12:09:59,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:09:59,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873572540] [2022-07-13 12:09:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:09:59,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:09:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:09:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-13 12:09:59,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:09:59,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873572540] [2022-07-13 12:09:59,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873572540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:09:59,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:09:59,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:09:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681373459] [2022-07-13 12:09:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:09:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:09:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:09:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:09:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:09:59,943 INFO L87 Difference]: Start difference. First operand 175050 states and 209481 transitions. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:10:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:10:07,053 INFO L93 Difference]: Finished difference Result 648101 states and 769804 transitions. [2022-07-13 12:10:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:10:07,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 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 1063 [2022-07-13 12:10:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:10:08,226 INFO L225 Difference]: With dead ends: 648101 [2022-07-13 12:10:08,226 INFO L226 Difference]: Without dead ends: 474046 [2022-07-13 12:10:08,796 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 [2022-07-13 12:10:08,799 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 3690 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3690 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 5580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:10:08,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3690 Valid, 1220 Invalid, 5580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-13 12:10:09,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474046 states. [2022-07-13 12:10:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474046 to 473939. [2022-07-13 12:10:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473939 states, 473938 states have (on average 1.1801881258730045) internal successors, (559336), 473938 states have internal predecessors, (559336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:10:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473939 states to 473939 states and 559336 transitions. [2022-07-13 12:10:15,877 INFO L78 Accepts]: Start accepts. Automaton has 473939 states and 559336 transitions. Word has length 1063 [2022-07-13 12:10:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:10:15,877 INFO L495 AbstractCegarLoop]: Abstraction has 473939 states and 559336 transitions. [2022-07-13 12:10:15,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:10:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 473939 states and 559336 transitions. [2022-07-13 12:10:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-07-13 12:10:16,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:10:16,305 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:10:16,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 12:10:16,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:10:16,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:10:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1772427010, now seen corresponding path program 1 times [2022-07-13 12:10:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:10:16,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014868080] [2022-07-13 12:10:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:10:16,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:10:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:10:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 12:10:17,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:10:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014868080] [2022-07-13 12:10:17,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014868080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:10:17,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:10:17,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:10:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137881848] [2022-07-13 12:10:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:10:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:10:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:10:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:10:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:10:17,096 INFO L87 Difference]: Start difference. First operand 473939 states and 559336 transitions. Second operand has 4 states, 4 states have (on average 257.0) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:10:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:10:26,981 INFO L93 Difference]: Finished difference Result 1401850 states and 1638643 transitions. [2022-07-13 12:10:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:10:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 257.0) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 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 1081 [2022-07-13 12:10:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:10:29,477 INFO L225 Difference]: With dead ends: 1401850 [2022-07-13 12:10:29,477 INFO L226 Difference]: Without dead ends: 928906 [2022-07-13 12:10:29,740 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 [2022-07-13 12:10:29,750 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 2501 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 6871 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 6871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:10:29,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2501 Valid, 1619 Invalid, 7406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 6871 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 12:10:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928906 states.